Abstract:
‘FairchildLS’ is a mid-season maturing diploid mandarin that combines medium-large sized fruit of excellent quality and production, with low seed content even in mixed plantings. It would likely be successful in the mid to late-season marketing window that currently has very few low seeded cultivars.

Description:
LATIN NAME OF THE GENUS AND SPECIES 
       [0001]    The mandarin cultivar of this invention is botanically identified as  Citrus reticulata.    
       VARIETY DENOMINATION 
       [0002]    The variety denomination is ‘FairchildLS’. 
       BACKGROUND OF THE INVENTION 
       [0003]    This invention relates to a new and distinctive mandarin cultivar designated ‘FairchildLS’, which was developed at Riverside, Calif. and derived from an irradiated bud of ‘Fairchild’ mandarin. ‘Fairchild’ mandarin was produced by J. R. Furr in Indio, Calif. from a conventional hybridization of 2n Clementine ‘Algerian’ mandarin×2n ‘Orlando’ tangelo (itself a hybrid of ‘Duncan’ grapefruit×‘Dancy’ mandarin produced in Florida). ‘Fairchild’ was released in 1964. 
         [0004]    Irradiation of budwood of ‘Fairchild’ mandarin, taken from registered trees in Lindcove, Calif., was accomplished in June, 1997 at Riverside using 50 Gray units of gamma irradiation from a Cobalt-60 irradiation source. Buds from this irradiation were propagated onto various rootstocks in the greenhouse at Riverside where they were grown to field-plantable-sized trees. These trees were planted in June 1998 at Riverside. Fruit production and evaluation on these trees began in 2001. One selection from this irradiated population (propagated on Carrizo citrange rootstock) distinguished itself from the others in having very low seed counts in comparison to the original ‘Fairchild’ cultivar, as well as having the excellent fruit quality and normal fruit production characteristics of the ‘Fairchild’ parent (see,  FIGS. 1 and 2 ). This selection, later designated ‘FairchildLS’, was known throughout experimental evaluation as ‘Fairchild’ IR2 (for ‘Fairchild’ IRradiated selection #2). After two seasons of fruiting this selection, ‘Fairchild IR2’, was selected for further trials and in June 2002, buds were taken from this selection and propagated onto Carrizo and C35 citrange rootstocks at Riverside. In April 2003 budwood from this selection was sent to Riverside, Calif. for evaluation of disease status and elimination of viruses and other pathogens, as needed. Twenty trees, propagated from budwood taken from the “mother” tree selection were planted at Riverside in June 2003. Fruit production on these twenty trees commenced in 2006. In June 2005 two trees of ‘FairchildLS’, which had been produced from budwood tested and certified as tristeza-free, were sent to Lindcove, Calif. where they were planted in the citrus breeding block. Further propagations from the Riverside budwood source were made at Lindcove in the summer of 2003. In June 2004, twelve trees from this propagation were planted in Irvine, Calif. and two trees in Santa Paula, Calif. An additional forty-eight trees from this same 2003 propagation were planted in 2005 at four trial sites: Lindcove, Arvin, Oasis and Woodlake. All trials were propagated equally on Carrizo and C35 citrange rootstocks. Fruit production of these propagated trees commenced in 2006 (a few trees at two sites) and 2007 (most trees at most sites). The properties of ‘FairchildLS’ were found to be true to type and transmissible by asexual reproduction in comparing these plantings with the original ‘FairchildLS’ selection. 
       BRIEF SUMMARY OF THE INVENTION 
       [0005]    ‘FairchildLS’ is a mid-season maturing diploid mandarin that combines medium-large sized fruit of excellent quality and production, with low seed content even in mixed plantings. It would likely be successful in the mid to late-season marketing window that currently has very few low seeded cultivars. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    The Figures depict various characteristics of ‘FairchildLS’. 
           [0007]      FIG. 1  shows fruit of ‘FairchildLS’ taken at Riverside in February 2009. 
           [0008]      FIG. 2  shows a comparison of seed content of ‘FairchildLS’ (left) and standard ‘Fairchild’ (right) mandarins under cross-pollinated conditions. 
           [0009]      FIG. 3  shows an eleven-year-old “mother” tree of ‘FairchildLS’ on Carrizo citrange rootstock. 
           [0010]      FIG. 4  shows a five-year-old ‘FairchildLS’ tree on Carrizo citrange rootstock at Riverside, Calif. 
           [0011]      FIG. 5  shows the bud-union of an eleven-year-old ‘FairchildLS’ on Carrizo citrange rootstock. 
           [0012]      FIG. 6  shows fruit clusters of ‘FairchildLS’ taken at Riverside in February 2009. 
           [0013]      FIG. 7  shows leaves of ‘FairchildLS’. 
           [0014]      FIG. 8  shows open and closed flowers of the ‘FairchildLS’ mandarin cultivar. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0015]    ‘FairchildLS’ is a mandarin selection developed at Riverside, Calif. from an irradiated bud of the diploid mandarin cultivar ‘Fairchild’, which is a mid-season maturing variety. Evaluation of ‘FairchildLS’ began on the original tree at Riverside in 2001 and has continued annually until the present. Tree size, growth, as well as fruit production and fruit quality characteristics, have been compared in these evaluations to ‘Fairchild’ mandarin from the same field block. Three, four and five-year-old ‘FairchildLS’ trees in trials at Riverside, Irvine, Arvin, Lindcove, Oasis and Woodlake have also been evaluated from two to four years of fruiting (see Tables 1 and 2). 
         [0016]    ‘FairchildLS’ distinguishes itself by being low seeded (2.4 seeds/fruit) in all situations of cross-pollination, differing from ‘Fairchild’, which will have up to 15-25 seeds/fruit in cross-pollinated situations. In Riverside, Calif. ‘FairchildLS’ matures in winter, typically early January, and holds its fruit quality characteristics through late March. Fruit size is moderately large (64 mm) averaging 110 grams per fruit. Fruit are deeply oblate in shape with a deep orange rind color and a moderately smooth rind texture. Flesh color is deep orange and finely textured, and the fruit are moderately easy to peel. Fruit are juicy, with a rich, sweet flavor when mature. 
         [0017]    Tree growth habit is rounded, producing a dense, compact tree crown with excellent production commencing in the third year after planting. ‘FairchildLS’, like its parent ‘Fairchild’, may need a pollinizer for best production. ‘FairchildLS’ is well adapted to growing in all California climate zones normally associated with citrus, including hot desert areas (where maturity and marketing occur in November-December), which is a rare and distinct advantage for a mandarin. Alternate bearing does exist, but can be controlled with appropriate cultural practices. 
         [0018]    ‘FairchildLS’ mandarin can be grown according to accepted cultural practices for most mandarin varieties, including planting densities of 180-300 trees per acre, normal fertilization and pest control practices, and the use of standard rootstocks for mandarins. Pruning is not normally necessary since the normal growth habit of the tree results in a dense, compact crown. However, selective interior pruning may enhance production and health of the tree if applied after the second year of full fruit production and regularly thereafter. Other rootstocks adapted to more marginal growing conditions of salinity, high pH or very heavy soils, including the lemon types  C. macrophylla, Volkameriana,  and rough lemon, may be useful in those conditions but overall fruit quality would likely be affected negatively. Sour orange or mandarin type rootstocks such as Cleopatra might be more suitable in these marginal conditions since fruit quality would not be affected to the extent the lemon-type rootstocks impart.
   Comparison with existing mandarins:   
 
         [0020]    Mid to late season maturing mandarin cultivars in production include ‘Fairchild’ mandarin (the original cultivar from which ‘FairchildLS’ was derived), ‘Murcott’ tangor, ‘Fortune’ mandarin, ‘Ortanique’ tangor, ‘Page’ mandarin ‘Temple’ tangor, as well as late-maturing Clementina selections including ‘Hernandina’ and ‘Nour’, ‘Dancy’ mandarin and ‘Minneola’ tangelo. All of these cultivars will be seedy if grown in the presence of a pollenizer. Some, including the Clementina selections, ‘Fortune’, ‘Ortanique’ and ‘Page’ mandarins will have few seeds if no pollinizer is present. Recently released mid and mid-late season cultivars that are very low-seeded include ‘Tango’ mandarin, ‘Gold Nugget’, ‘TDE2’ mandarin hybrid (Shasta Gold®) ‘TDE3’ mandarin hybrid (Tahoe Gold®), and ‘TDE4’ mandarin hybrid (Yosemite Gold®) and ‘DaisySL’ mandarin. ‘FairchildLS’ differs from these cultivars in being slightly earlier maturing and better adapted to hot desert climates than all but ‘DaisySL’. Trees of ‘FairchildLS’ tend to be smaller than all the other varieties except ‘DaisySL’. Additional differences (summarized in Table 6) distinguish it from each of these cultivars. 
         [0021]    ‘FairchildLS’ mandarin exhibits low seed numbers (2.4 seeds per fruit) in all fruit under all conditions of cross-pollination. Additionally, preliminary evaluations indicate that pollen from ‘FairchildLS’ has reduced germination rates in culture (˜25%) and is therefore likely to reduce the tendency to cause seeds in other mandarins, causing few seeds in selected Clementine mandarin and ‘W. Murcott’ mandarin cultivars when hand pollinated onto those selections. A comparison of ‘FairchildLS’ with other low-seeded late-season mandarins is provided in Table 6 below. ‘FairchildLS’ is distinctive and superior in having a very wide climatic growing area, somewhat less alternate bearing, and fruit appearance that may be preferred in some markets. 
         [0022]    The Royal Horticultural Society (R.H.S.) color numbering system is used herein for the color description of the rind, seed, bark, leaf, flower, flesh color and other interest of the ‘FairchildLS’ mandarin cultivar.
   Trees, foliage, and flowers:   
 
         [0024]    Tree size and growth characteristics of ‘FairchildLS’ have been consistent with ‘Fairchild’ throughout the evaluations. Growth of both the ‘Fairchild’ and the ‘FairchildLS’ selection has been generally rounded and somewhat spreading in the first four years, followed by a tendency to grow into a more compact, dense rounded crown in ensuing years. The eleven-year-old ‘FairchildLS’ “mother” tree at Riverside on Carrizo citrange rootstock is 2.7 m high and 3.0 m wide with a rounded, compact growth habit yielding a canopy volume of 12.72 m 3  ( FIG. 3 ) with a scion circumference of 37.9 cm and a rootstock circumference of 52.4 cm ( FIG. 5 ). In comparison, eleven-year-old ‘Fairchild’ control trees on ‘Carrizo’ (from the same block as the ‘FairchildLS’ “mother” tree) have averaged 2.8 m tall and 2.9 m wide yielding a canopy volume of 12.33 m 3  on Carrizo citrange rootstock with a scion circumference of 36.9 cm and a rootstock circumference of 49.9 cm. In the younger multi-location trials, five-year-old ‘FairchildLS’ trees on Carrizo rootstock have averaged 2.5 m in height and 2.4 m in diameter with canopy volumes of 7.54 m 3  ( FIG. 4 ). Trees on C35 rootstock averaged 2.4 m in height and 2.4 m in diameter with canopy volumes of 7.24 m 3 . 
         [0025]    Leaves of ‘FairchildLS’ are lanceolate in shape and concave in cross section. They have an acute apex with weak emargination and a convex base, and are dark-green in color ( FIG. 7 ). Petioles are short and normal, lacking wings. The selection further lacks thorns. 
         [0026]    Flowers of ‘FairchildLS’ are hermaphroditic with whitish petals (RHS White 155C) and yellowish (RHS Yellow 13B) anthers and are borne in clusters ( FIG. 8 ). Pollen viability for ‘FairchildLS’ is low (25-35% germination) in comparison to ‘Fairchild’ (84% pollen germination) and pollen production is significantly reduced (about 20% of the quantity of pollen grains produced by ‘Fairchild’). 
         [0000]    
       
         
               
             
               
               
               
             
           
               
                 TABLE 1 
               
               
                   
               
               
                 Tree, leaf, flower and seed characteristics  
               
               
                 (for nine-to eleven-year-old tree) of 
               
               
                 ‘FairchildLS’ mandarin 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1. 
                 Tree height (on  
                 2.7 m 
               
               
                   
                 Carrizo rootstock) 
                   
               
               
                 2. 
                 Crown diameter 
                 3.0 m 
               
               
                 3. 
                 Crown shape 
                 Round, compact 
               
               
                 4. 
                 Scion circumference/ 
                 38.5 cm/55.0 cm 
               
               
                   
                 rootstock 
                   
               
               
                   
                 circumference on  
                   
               
               
                   
                 Carrizo rootstock) 
                   
               
               
                 5. 
                 Scion circumference/ 
                 37.0 cm/53.0 cm 
               
               
                   
                 rootstock 
                   
               
               
                   
                 circumference (on  
                   
               
               
                   
                 C35 rootstock) 
                   
               
               
                 6. 
                 Bud-union characteristics 
                 Slightly benched 
               
               
                   
                 (citranges) 
                   
               
               
                 7. 
                 Rootstock-scion  
                 Excellent (with citranges) 
               
               
                   
                 compatibility 
                   
               
               
                 8. 
                 Tree vigor 
                 Moderately vigorous 
               
               
                 9. 
                 Bark color 
                 RHS Grey-Brown 199A 
               
               
                 10. 
                 Leaf shape 
                 Lanceolate 
               
               
                 11. 
                 Leaf cross-section 
                 Concave 
               
               
                 12. 
                 Leaf blade length 
                 80.8 mm 
               
               
                 13. 
                 Leaf blade width 
                 25.5 mm 
               
               
                 14. 
                 Leaf apex 
                 Acute with weak emargination 
               
               
                 15. 
                 Leaf base 
                 Acute 
               
               
                 16. 
                 Leaf margins 
                 Very slightly crenate 
               
               
                 17. 
                 Leaf abaxial color 
                 RHS Green 137A 
               
               
                 18. 
                 Leaf adaxial color 
                 RHS Green 143A 
               
               
                 19. 
                 Petiole length 
                 10.6 mm ± 0.9 
               
               
                 20. 
                 Petiole width 
                  1.6 mm 
               
               
                 21. 
                 Petiole wings 
                 Absent 
               
               
                 22. 
                 Petiole color 
                 RHS Green 137A 
               
               
                 23. 
                 Thorniness 
                 Not present 
               
               
                 24. 
                 Inflorescence type 
                 Clustered 
               
               
                 25. 
                 Flowering habit 
                 Flowers once per year 
               
               
                 26. 
                 Flower size 
                 13.0 mm (medium) 
               
               
                 27. 
                 Flower structure 
                 Complete 
               
               
                 28. 
                 Petal color 
                 RHS Green-White 157C 
               
               
                 29. 
                 Anther color 
                 RHS Yellow 13C 
               
               
                 30. 
                 Pollen viability 
                 Low (25-35%) 
               
               
                   
                 (germination in culture) 
               
               
                   
               
             
          
         
       
       
         Fruiting, fruit and production characteristics: 
       
     
         [0028]    Fruit of ‘FairchildLS’ are deeply oblate to slightly oval in shape with no neck. The fruit has a slightly concave basal end (moderately depressed) with a truncate (slightly depressed) distal end and a non-persistent style. The fruit is medium sized for a mandarin (classified as Large by State of California standards), averaging 64 mm in diameter and 56 mm in height. The fruit further has a smooth, deep orange rind color (RHS Orange-Red N25B) and relatively inconspicuous, slightly depressed oil glands. The rind is of medium adherence at maturity and relatively thin, averaging 3.5 mm in thickness, which makes the fruit only moderately easy to peel. The fruit interior has a moderately fine flesh texture with 11-12 segments and a semi-hollow axis of medium size at maturity. The fruit are juicy, averaging 47% juice and average 110 g in weight. Fruit from trees on Carrizo citrange rootstocks averaged 12.1-13.0% soluble solids and 0.85-1.17% acid in January at four trial locations in California with soluble solids increasing to 13.2-14.5%, and acid decreasing to 0.76-0.93% by mid-March (Table 5). Fruit from trees on C35 citrange rootstocks averaged 11.2-12.8% soluble solids and 0.94-1.23% acid in January at four trial locations in California with soluble solids increasing to 13.1-14.0% and acid decreasing to 0.78-1.01% by mid-March. Fruit average 2.4±0.6 seeds per fruit in the presence of substantial cross-pollination pressure at all trial locations (summarized from Table 4). Seeds, when present, are polyembryonic, with a slightly yellowish-white outer seed coat (RHS Yellow-White 158A), a grayish-orange (RHS Greyed-Orange 164C) inner seed coat, and grayish-yellow (RHS Greyed-Yellow 160C) colyledons. 
         [0029]    Fruit production of ‘FairchildLS’ begins in the third year after planting, which is similar to ‘Fairchild’. Fruit production on four-year-old trees averaged 28.0-49.2 kg, and on five-year-old trees averaged 41.6 -64.7 kg at the fruiting trial sites ( FIG. 6 , Table 3). The original “mother” tree at Riverside was similar in fruit production at age four and five years (45.2 and 72.1 kg—not shown in Table 3). As the original tree aged, some alternate bearing became apparent in years seven and eight. This is similar to ‘Fairchild’ mandarin, which has a history of alternate bearing. 
         [0030]    Fruit storage trials included storage of washed but not waxed fruit at 5.6° C. for up to 45 days with fruit samples taken every 15 days for analysis. Data indicates that the storage characteristics of ‘FairchildLS’ are very good with no measureable loss of rind quality or color, no significant loss in juice quality or deterioration in taste, and no significant indication of fungal or other disease problems over the 45 day storage period. 
         [0000]    
       
         
               
             
               
               
               
             
           
               
                 TABLE 2 
               
               
                   
               
               
                 Fruit characteristics of ‘FairchildLS’ mandarin at maturity 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 1. 
                 Fruit shape 
                 Deep oblate 
               
               
                 2. 
                 Fruit diameter 
                 64.0 mm ± 3.3 
               
               
                 3. 
                 Fruit height 
                 56.1mm ± 2.3 
               
               
                 4. 
                 Aspect ratio (height/diameter) 
                 0.88 
               
               
                 5. 
                 Fruit: shape of basal end 
                 Rounded (flattened at stem) 
               
               
                 6. 
                 Fruit: shape of distal end 
                 Truncate (slightly depressed) 
               
               
                 7. 
                 Fruit: distal end areola 
                 Present but faint (18.8 mm) 
               
               
                 8. 
                 Fruit neck 
                 Not present 
               
               
                 9. 
                 Style 
                 Not persistent 
               
               
                 10. 
                 Rind texture 
                 Moderately smooth 
               
               
                 11. 
                 Oil glands 
                 Slightly conspicuous,  
               
               
                   
                   
                 slightly depressed 
               
               
                 12. 
                 Rind Color 
                 RHS Orange N25B 
               
               
                 13. 
                 Rind thickness 
                  3.5 mm 
               
               
                 14. 
                 Albedo thickness 
                  1.5 mm 
               
               
                 15. 
                 Albedo color 
                 RHS Yellow-Orange 23C 
               
               
                 16. 
                 Rind adherence 
                 Medium 
               
               
                 17. 
                 Rind separation 
                 Slight 
               
               
                 18. 
                 Flesh (pulp) color 
                 RHS Orange-Red N3OD 
               
               
                 19. 
                 Flesh (pulp) texture 
                 Moderately fine 
               
               
                 20. 
                 Number of segments 
                 10-11 
               
               
                 21. 
                 Axis: structure 
                 Semi-solid 
               
               
                 22. 
                 Axis: size 
                 Medium 
               
               
                 23. 
                 Navel presence 
                 Not present 
               
               
                 24. 
                 #Seeds/fruit (mean) 
                 2.4 ± 0.6 (cross-pollinated  
               
               
                   
                   
                 conditions) 
               
               
                 25. 
                 Seed embryony 
                 Polyembryonic 
               
               
                 26. 
                 Seed coat color 
                 Yellow-White 158A 
               
               
                 27. 
                 Seed cotyledon color 
                 Greyed-Yellow 160C 
               
               
                 28. 
                 Seed inner coat color 
                 Greyed-Orange 164B 
               
               
                 29. 
                 Fruit weight 
                 110 g  
               
               
                 30. 
                 % Juice 
                 47.2% 
               
               
                 31. 
                 % Soluble solids (at maturity) 
                 12.6% 
               
               
                 32. 
                 % Acid (at maturity) 
                  1.11% 
               
               
                 33. 
                 Season of maturity 
                 Mid-season (early  
               
               
                   
                   
                 January-April) 
               
               
                 34. 
                 Fruit holding ability 
                 4-8 weeks 
               
               
                   
                 on tree past maturity 
                   
               
               
                 35. 
                 Fruit quality after storage 
                 Very Good 
               
               
                   
                 (5.6° C., 45 days) 
                   
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 3 
               
             
             
               
                   
               
               
                 Crop yields for ‘FairchildLS’ and ‘Fairchild’ (control trees) at four trial sites over 
               
               
                 two years, 2006/2007, 2007/2008, and 2008/2009. 
               
             
          
           
               
                   
                   
                   
                 Age 
                   
                 2006/7 
                 2006/7 
                 2007/8 
                 2007/8 
                 2008/9 
                 2008/9 
               
               
                   
                   
                   
                 in 
                   
                 Mean 
                 Yield 
                 Mean 
                 Yield 
                 Mean 
                 Yield 
               
               
                   
                   
                 # 
                 2009 
                   
                 Yield 
                 Range 
                 Yield 
                 Range 
                 Yield 
                 Range 
               
               
                 Site 
                 Selection 
                 Trees 
                 (yrs) 
                 Rootstock 
                 (kg) 
                 (kg) 
                 (kg) 
                 (kg) 
                 (kg) 
                 (kg) 
               
               
                   
               
             
          
           
               
                 Riverside 
                 ‘FairchildLS’ 
                 10 
                 6 
                 Carrizo 
                 40.1 
                 29.8- 
                 48.3 
                 32.1- 
                 67.2 
                 53.1- 
               
               
                   
                   
                   
                   
                   
                   
                 57.9 
                   
                 60.6 
                   
                 82.4 
               
               
                 Riverside 
                 ‘FairchildLS’ 
                 9 
                 6 
                 C35 
                 38.8 
                 27.8- 
                 49.2 
                 31.0- 
                 64.7 
                 55.1- 
               
               
                   
                   
                   
                   
                   
                   
                 45.9 
                   
                 66.9 
                   
                 79.4 
               
               
                 Riverside 
                 ‘FairchildLS’ 
                 1 
                 11 
                 Carrizo 
                 64.8 
                 64.8 
                 46.3 
                 46.3 
                 70.4 
                 70.4 
               
               
                   
                 (mother) 
                   
                   
                   
                   
                   
                   
                   
                   
                   
               
               
                 Riverside 
                 ‘Fairchild’ 
                 2 
                 11 
                 Carrizo 
                 68.5 
                 62.4- 
                 47.7 
                 44.1- 
                 66.9 
                 62.9- 
               
               
                   
                 control 
                   
                   
                   
                   
                 74.6 
                   
                 51.3 
                   
                 70.9 
               
               
                 Coachella 
                 ‘FairchildLS’ 
                 6 
                 4 
                 Carrizo 
                 * 
                 * 
                 15.2 
                  8.1- 
                 32.2 
                 19.3- 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 24.4 
                   
                 38.1 
               
               
                 Coachella 
                 ‘FairchildLS’ 
                 6 
                 4 
                 C35 
                 * 
                 * 
                 13.4 
                  6.3- 
                 35.9 
                 17.9- 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 21.7 
                   
                 46.4 
               
               
                 Coachella 
                 ‘Fairchild’ 
                 3 
                 4 
                 Carrizo 
                 * 
                 * 
                 16.7 
                 14.1- 
                 29.7 
                 21.8- 
               
               
                   
                 control 
                   
                   
                   
                   
                   
                   
                 18.7 
                   
                 32.0 
               
               
                 Irvine 
                 ‘FairchildLS’ 
                 6 
                 5 
                 Carrizo 
                 7.2 
                 0-14.6 
                 28.2 
                 22.8- 
                 41.6 
                 36.1- 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 43.9 
                   
                 62.4 
               
               
                 Irvine 
                 ‘FairchildLS’ 
                 6 
                 5 
                 C35 
                 6.1 
                 0-12.4 
                 34.1 
                 27.8- 
                 43.5 
                 39.8- 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 45.9 
                   
                 65.9 
               
               
                 Irvine 
                 ‘Fairchild’ 
                 4 
                 5 
                 Carrizo 
                 18.1 
                  9.4- 
                 37.1 
                 24.6- 
                 49.2 
                 41.5- 
               
               
                   
                 cntl 
                   
                   
                   
                   
                 25.2 
                   
                 47.9 
                   
                 54.6 
               
               
                 Lindcove 
                 ‘FairchildLS’ 
                 6 
                 4 
                 Carrizo 
                 * 
                 * 
                 19.2 
                 10.1- 
                 30.1 
                 18.8- 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 27.4 
                   
                 36.1 
               
               
                 Lindcove 
                 ‘FairchildLS’ 
                 6 
                 4 
                 C35 
                 * 
                 * 
                 23.4 
                  8.4- 
                 28.9 
                 15.9- 
               
               
                   
                   
                   
                   
                   
                   
                   
                   
                 29.7 
                   
                 35.4 
               
               
                 Lindcove 
                 ‘Fairchild’ 
                 4 
                 5 
                 Carrizo 
                 8.6 
                  3.0- 
                 31.7 
                 24.4- 
                 35.6 
                 26.4- 
               
               
                   
                 cntl 
                   
                   
                   
                   
                 13.8 
                   
                 38.7 
                   
                 42.0 
               
               
                   
               
               
                 * Not fruiting 
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 4 
               
             
             
               
                   
               
               
                 Seed counts (average number of seeds per fruit)  
               
               
                 for TairchildLS&#39; and &#39;Fairchild&#39; 
               
               
                 (control trees) at four trial sites over  
               
               
                 two years, 2007/2008 and 2008/2009. 
               
             
          
           
               
                   
                   
                   
                   
                   
                 2007/8 
                 2008/9 
                 2008/9 
               
               
                   
                   
                   
                   
                 2007/8 
                 Seed 
                 Mean 
                 Seed 
               
               
                   
                   
                 Tree Age 
                   
                 Mean 
                 Count 
                 Seeds/ 
                 Count 
               
               
                 Site 
                 Selection 
                 (yrs) 
                 Rootstock 
                 Seeds/Fruit 
                 Range 
                 Fruit 
                 Range 
               
               
                   
               
             
          
           
               
                 Riverside 
                 ‘FairchildLS’ 
                  6 (10 trees)  
                 Carrizo 
                 2.5 
                  1.9-3.6 
                 2.4 
                  2.2-3.3 
               
               
                 Riverside 
                 ‘FairchildLS’ 
                  6 (9 trees) 
                 C35 
                 2.4 
                  2.1-3.3 
                 2.6 
                  2.0-3.0 
               
               
                 Riverside 
                 ‘FairchildLS’ 
                 11 (1 tree) 
                 Carrizo 
                 2.3 
                 NA 
                 2.4 
                 NA 
               
               
                   
                 (mother) 
                   
                   
                   
                   
                   
                   
               
               
                 Riverside 
                 ‘Fairchild’ 
                 11 (2 trees) 
                 Carrizo 
                 18.9 
                 10.1-14.4 
                 21.4 
                 18.6-24.2 
               
               
                   
                 control 
                   
                   
                   
                   
                   
                   
               
               
                 Coachella 
                 ‘FairchildLS’ 
                  4 (6 trees) 
                 Carrizo 
                 1.8 
                  0.8-2.6 
                 1.9 
                  1.2-2.7 
               
               
                 Coachella 
                 ‘FairchildLS’ 
                  4 (6 trees) 
                 C35 
                 2.0 
                  1.3-2.5 
                 2.2 
                  1.3-2.7 
               
               
                 Coachella 
                 ‘Fairchild’ 
                  4 (4 trees) 
                 Carrizo 
                 17.8 
                 15.2-20.4 
                 18.9 
                 16.1-23.2 
               
               
                   
                 control 
                   
                   
                   
                   
                   
                   
               
               
                 Irvine 
                 ‘FairchildLS’ 
                  5 (6 trees) 
                 Carrizo 
                 2.2 
                  1.8-2.6 
                 2.4 
                  2.0-2.6 
               
               
                 Irvine 
                 ‘FairchildLS’ 
                  5 (6 trees) 
                 C35 
                 2.0 
                  1.6-2.4 
                 2.3 
                  1.9-2.7 
               
               
                 Irvine 
                 ‘Fairchild’ 
                  5 (4 trees) 
                 Carrizo/ 
                 16.2 
                 13.8-20.4 
                 15.5 
                 12.9-19.3 
               
               
                   
                 control 
                   
                 C35 
                   
                   
                   
                   
               
               
                 Lindcove 
                 ‘FairchildLS’ 
                  4 (6 trees) 
                 Carrizo 
                 1.2 
                  0.9-2.0 
                 1.5 
                  0.8-2.1 
               
               
                 Lindcove 
                 ‘FairchildLS’ 
                  4 (6 trees) 
                 C35 
                 1.3 
                  0.7-0.1.8 
                 1.4 
                  1.1-2.2 
               
               
                 Lindcove 
                 ‘Fairchild’ 
                  4 (2 trees) 
                 Carrizo 
                 14.8 
                 12.3-17.3 
                 15.4 
                 13.9-16.9 
               
               
                   
                 control 
                   
                   
                   
                   
                   
                   
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 5 
               
             
             
               
                   
               
               
                 Mean and standard deviation (S.D.) of soluble solids, acid and solids/acid ratio for 
               
               
                 ‘FairchildLS’ on Carrizo and C35 citrange rootstock at four trial sites, 2007/2008 crop year. 
               
             
          
           
               
                   
                   
                 Soluble 
                   
                 Soluble 
                   
                 %  
                   
                 % 
                   
                 S/A 
                 S/A 
               
               
                   
                   
                 Solids % 
                   
                 Solids % 
                   
                 Acid 
                   
                 Acid 
                   
                 Ratio 
                 Ratio 
               
               
                 Site 
                 Date 
                 Carrrizo 
                 S.D. 
                 C35 
                 S.D. 
                 Carrizo 
                 S.D. 
                 C35 
                 S.D. 
                 Carrizo 
                 C35 
               
               
                   
               
             
          
           
               
                 Riverside 
                 Dec. 17, 2007 
                 11.1 
                 0.37 
                 10.7 
                 0.46 
                 1.35 
                 0.13 
                 1.32 
                 0.10 
                 8.2 
                 8.1 
               
               
                 Riverside 
                 Jan. 15, 2008 
                 12.4 
                 0.26 
                 12.0 
                 0.45 
                 1.11 
                 0.10 
                 1.19 
                 0.08 
                 11.2 
                 10.1 
               
               
                 Riverside 
                 Feb. 9, 2008 
                 13.3 
                 0.49 
                 12.9 
                 0.33 
                 0.98 
                 0.06 
                 1.04 
                 0.06 
                 13.6 
                 12.4 
               
               
                 Riverside 
                 Mar. 18, 2008 
                 14.5 
                 0.53 
                 14.0 
                 0.47 
                 0.86 
                 0.08 
                 0.94 
                 0.05 
                 16.7 
                 14.9 
               
               
                 Coachella 
                 Dec. 17, 2007 
                 12.0 
                 0.31 
                 10.3 
                 0.36 
                 0.97 
                 0.12 
                 1.06 
                 0.07 
                 12.4 
                 9.7 
               
               
                 Coachella 
                 Jan. 15, 2008 
                 13.0 
                 0.29 
                 12.7 
                 0.29 
                 0.85 
                 0.09 
                 0.94 
                 0.09 
                 15.3 
                 13.5 
               
               
                 Coachella 
                 Feb. 15, 2008 
                 13.4 
                 0.33 
                 13.0 
                 0.24 
                 0.81 
                 0.16 
                 0.85 
                 0.04 
                 16.5 
                 15.3 
               
               
                 Coachella 
                 Mar. 20, 2008 
                 13.1 
                 0.55 
                 13.1 
                 0.41 
                 0.76 
                 0.10 
                 0.78 
                 0.09 
                 18.2 
                 16.8 
               
               
                 Irvine 
                 Dec. 17, 2007 
                 11.5 
                 0.68 
                 11.9 
                 0.39 
                 1.31 
                 0.14 
                 1.28 
                 0.11 
                 8.8 
                 9.3 
               
               
                 Irvine 
                 Jan. 15, 2008 
                 12.3 
                 0.32 
                 12.8 
                 0.50 
                 1.09 
                 0.13 
                 1.17 
                 0.11 
                 11.3 
                 10.9 
               
               
                 Irvine 
                 Feb. 9, 2008 
                 13.5 
                 0.40 
                 13.4 
                 0.22 
                 0.95 
                 0.08 
                 0.97 
                 0.07 
                 14.2 
                 13.9 
               
               
                 Irvine 
                 Mar. 18, 2008 
                 14.4 
                 0.42 
                 14.2 
                 0.31 
                 0.91 
                 0.08 
                 0.90 
                 0.08 
                 15.8 
                 15.8 
               
               
                 Lindcove 
                 Dec. 17, 2007 
                 9.8 
                 0.51 
                 9.3 
                 0.33 
                 1.41 
                 0.15 
                 1.46 
                 0.18 
                 7.0 
                 7.0 
               
               
                 Lindcove 
                 Jan. 15, 2008 
                 12.1 
                 0.27 
                 11.2 
                 0.29 
                 1.17 
                 0.11 
                 1.23 
                 0.12 
                 10.1 
                 9.1 
               
               
                 Lindcove 
                 Feb. 9, 2008 
                 12.8 
                 0.40 
                 12.5 
                 0.40 
                 1.02 
                 0.06 
                 1.09 
                 0.07 
                 12.5 
                 11.7 
               
               
                 Lindcove 
                 Mar. 18, 2008 
                 13.9 
                 0.39 
                 13.6 
                 0.56 
                 0.93 
                 0.06 
                 1.01 
                 0.08 
                 14.9 
                 13.5 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 6 
               
             
             
               
                   
               
               
                 Comparison of ‘FairchildLS’ with other mid to mid-late season,  
               
               
                 low-seeded mandarins. Data for Riverside, California. 
               
             
          
           
               
                 Trait 
                 ‘FairchildLS’ 
                 ‘Tango’ 
                 ‘TDE3’ 
                 ‘TDE4’ 
                 ‘DaisySL’ 
               
               
                   
               
               
                 Maturity 
                 Early- 
                 Late- 
                 Late- 
                 February 
                 Early Dec- 
               
               
                   
                 January. 
                 January 
                 January 
                   
                 early Jan. 
               
               
                 Seeds per  
                 2.4 
                 0.15 
                 0.29 
                 0.32 
                 2.2 
               
               
                 fruit 
                   
                   
                   
                   
                   
               
               
                 RHS rind  
                 Orange  
                 Orange  
                 Orange- 
                 Orange- 
                 Orange- 
               
               
                 color 
                 N25B 
                 N25A 
                 Red 
                 Red 
                 Red 
               
               
                   
                   
                   
                 N30C 
                 N30C 
                 N30C 
               
               
                 Rind  
                 moderately 
                 smooth 
                 papillate 
                 smooth 
                 very  
               
               
                 texture 
                 smooth 
                   
                   
                   
                 smooth 
               
               
                 Fruit  
                 110 
                 90 
                 134 
                 175 
                 135 
               
               
                 weight (g) 
                   
                   
                   
                   
                   
               
               
                 Fruit 
                 0.88 
                 0.81 
                 0.85 
                 0.78 
                 0.88 
               
               
                 height/ 
                   
                   
                   
                   
                   
               
               
                 width 
                   
                   
                   
                   
                   
               
               
                 Alternate 
                 medium 
                 low 
                 medium- 
                 medium- 
                 medium 
               
               
                 bearing 
                   
                   
                 high 
                 high 
               
               
                   
               
             
          
         
       
     
         [0031]    No susceptibilities to plant or fruit diseases, or to pests, beyond those normally associated with citrus species have been observed.