Abstract:
A new and distinct cultivar of  Doritaenopsis  plant named “Sogo Linluo”, characterized by its flowers of light yellow overlaid with pink toward base and the purple red labellum, freely flowering habit, upright, freely branching and sturdy flowering stems, and the excellent postproduction longevity.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to botanical classification/cultivar designation:  Doritaenopsis  Orchid cultivar Sogo Linluo.  
       BACKGROUND OF THE INVENTION  
       [0002]     The present invention comprises a new and distinct cultivar of  Doritaenopsis  Orchid, a bigeneric hybrid of Doritis.times.  Phalaenopsis  of the family Orchidaceae, and hereinafter referred to by the cultivar name, Sogo Linluo. The genus  Doritaenopsis  is a member of the family  Orchidaceae.    
         [0003]      Doritaenopsis  comprise a group of bigeneric hybrids generally intermediate in character between the parent genera, which are suitable for cultivation in the home or greenhouse. The parent genera of  Doritaenopsis  are predominantly epiphytic or rock dwelling, and are native to tropical Asia, Malay Archipelago, and Oceania. The species typically have 2-ranked fleshy oblong or elliptic leaves affixed to a short central stem (monopodial growth), which vary in size from 5 to 8 inches to over 2 feet. The leaves may be entirely green or mottled with silver grey.  
         [0004]      Doritaenopsis  orchids, often referred to as ‘Moth Orchids’ in the horticultural trade, are frequently used to furnish cut flowers for the florist trade, or sold as flowering potted plants for home or interiorscape.  
         [0005]      Doritaenopsis  produce upright racemes, often with many showy flowers, which open in succession beginning with the lowermost. The flowers possess three sepals, and three petals, the lateral ones being alike. The lowermost petal, called the labellum, is three lobed and is often more brightly colored than the other flower segments. Flower colors are frequently various shades of pink, white and yellow.  
         [0006]      Doritaenopsis  orchids are typically propagated from seeds. However,  Doritaenopsis  is capable of being asexually reproduced from offshoots, which frequently arise from the lower bracts of the inflorescence. The resulting plants are detached from the mother plant and may be planted in a suitable substrate.  
         [0007]     ‘Sogo Linluo’ is a product of a planned breeding program conducted by the inventor in Kaohsiung County, Taiwan. The objective of the breeding program is to create new uniform pot-type  Doritaenopsis  Orchid cultivars having attractive flower coloration. The inventor had been addressed himself to the Orchids breeding since 1985.  
         [0008]     ‘Sogo Linluo’ was discovered by the inventor from within the progeny of a cross-pollination of one  Phalaenopsis  Orchid and one  Doritaenopsis  Orchid on February 1999, in a controlled environment in Kaohsiung County, Taiwan.  
         [0009]     Asexual propagation by tissue culture in a laboratory in Pingdong County, Taiwan has been used to increase the number of plants for evaluation and has demonstrated in a controlled environment in Kaohsiung County, Taiwan that the unique combination of characteristics as herein disclosed for the new  Doritaenopsis  Orchid are firmly fixed and are retained through successive generations of asexual reproduction.  
       SUMMARY OF THE INVENTION  
       [0010]     The following traits have been repeatedly observed and are determined to be basic characteristics of ‘Sogo Linluo’ which in combination distinguish this  Doritaenopsis  Orchid as a new and distinct cultivar: 
        1. Light yellow flowers overlaid with pink toward the base and the purple red colored labellum.     2. Freely flowering habit.     3. Upright, freely branching and sturdy flowering stems.     4. Excellent postproduction longevity.        
 
         [0015]     Plants of ‘Sogo Linluo’ differ primarily from plants of parent cultivars in flower color. Currently, there is no commercial cultivar to which ‘Sogo Linluo’ can be meaningfully compared. 
     
    
     BRIEF DESCRIPTION FOR THE DRAWINGS  
       [0016]     The accompanied photographic illustrations show typical plant and flower characteristics of ‘Sogo Linluo’ with colors being as true as possible with illustrations of this type.  
         [0017]      FIG. 1  is a side view of a plant of ‘Sogo Linluo’ flowering in the pot of 13 cm.  
         [0018]      FIG. 2  is a close-up view showing the characteristics of the flower.  
         [0019]      FIG. 3  is a close-up view showing the characteristics of the leaf. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0020]     ‘Sogo Linluo’ has not been observed under all possible environmental conditions. The phenotype may vary significantly with variations in environment such as temperature, light intensity, fertilization and day length without any change in the genotype.  
         [0021]     The observations and measurements describe plants grown in Kaohsiung County, Taiwan under the conditions, which approximate those generally used in commercial practice.  
         [0022]     In the following description, color references are made to The Royal Horticultural Society (R.H.S.) Color Chart.  
         [0023]     Plants used for the aforementioned photographs and following detailed botanical description were 18 months in maturity and grown in the pots of 13 cm, in a controlled greenhouse with day-night temperature around 25-18 degree Celsius, and light intensity between 15,000˜20,000 lux natural light, in Kaohsiung County, Taiwan. 
    Origin: Seedling from a cross of selected  Doritaenopsis  and  Phalaenopsis  but unnamed parentage.     Classification:  Doritaenopsis  hybrid cv. ‘Sogo Linluo’    Propagation: Asexual propagation by tissue culture.     Plant description: 
             Plant height.— Soil level to top of foliar plane is about 20 to 25 cm.      Plant height.— Soil level to top of inflorescences is about 40 to 45 cm.      Plant diameter.— Is about 20 to 25 cm.      Growth habit.— Compact, small, dark-green leaves and a relatively short raceme.      Flowers per stem.— Approximately 30 to 40.        
        Foliage description: 
             Quantity.— Approximately 6 to 8 leaves are produced before flowering.      Size of leaf.— 10 to 15 cm long and 5 to 6 cm wide.      Shape.— The leaf blade is short and elliptic with a cuneate base and an obtuse tip. The leaf blade is leathery and thick. The middle vein protrudes, while the other veins are not visible in the thick leaf blade.      Attitude.— Horizontal and on two sides parallel.      Color.— Upper surface: Dark-green, RHS 137A. Lower surface: Light-green, RHS 146B.        
        Inflorescence description: 
             Flower type and habit.— Single zygomorphic flowers arranged in racemes. Flowers roughly pentagonal in shape. Flowering stems upright, freely branching and sturdy. Plants freely flowering; plants typically produce one to three branched flowering stems with at least 20 to 25 flowers each.      Fragrance.— No fragrance.      Natural flowering season.— From February to April in the southern part of Taiwan. The flower spikes can be induced under the controlled environment, of which day-night temperature at 25-18 degree C. for 2 weeks.      Post - production longevity.— Plants of ‘Sogo Linluo’ maintain good leaf and flower substance for about three to six months on the plant under interior environmental conditions. Lastingness of cut flowers has not been observed.      Inflorescence length.— About 15 to 20 cm.      Inflorescence diameter.— About 13 to 18 cm.      General impressions of petals and sepals.— Horizontal elliptical in shape, about 4.5 cm of flower width in front view.      Sepals.— There are 3 sepals which are fleshy and glabrous in texture, with straight margins and in elliptical shape, about 2 cm in length and 1.5 cm in diameter. The main color of dorsal sepal is RHS 4D, the pattern color of dorsal sepal is 72B. The main color of lateral sepals is RHS 4D, the pattern color of lateral sepal is 70C.      Petals.— There are 2 open petals which are fleshy and glabrous in texture, with margins weakly undulate and in elliptical shape, about 1.8 cm in length and 1.5 cm in diameter. The main color of petals is RHS 4D, the pattern color of petals is 72B.      Labellum  ( lip ).—The lip whiskers are absent, shape of apical lobe is ovate, approximately 1.1 to 1.3 cm long and 1.0 to 1.2 cm wide. Base color of apical lobe is RHS N79B, tip color of apical lobe is RHS N79C.      Peduncles.— Length about 25 to 30 cm, diameter about 4.5 mm, upright, strong and sturdy, with smooth and glabrous texture. Color is RHS 146A.      Pedicels.— Length about 2.5 cm, diameter about 2 mm. Aspect about 80.degree from vertical. Strong, with a texture of smooth and glabrous. Color RHS 146C, towards the base, overlaid with RHS 146A.      Reproductive organs.— The stamens, style and stigmas are fused into a single, short structure called the column, possessing one terminal anther with pollen grains united into a pollinia, which are covered by an anther cap. The stigma is located under the column behind the pollinia. The ovary is inferior with three carpels present. The plant has not produced seed.      Column.— Approximately 8 to 9 mm long and 3 to 4 mm wide, RHS 77B.      Pollinia.— Two, about 0.6 to 0.7 mm oval masses of pollen present, RHS 22A.      Ovary.— 7 to 9 mm long and 2.5 mm in diameter, RHS 75B.      Roots.— Fleshy, approximately 5 to 7 mm wide and green, RHS 148B-C.        
        Plant disease resistance/susceptibility: No specific resistance or susceptibility observed.     General observations:  Doritaenopsis ‘ Sogo Linluo’ produces two or more inflorescence with flowers having sepals and petals in the color of light yellow overlaid with pink toward the base. A purple red labellum and a pink column. The inflorescence is strong, erect and sturdy, relatively short, and easily packaged for shipping. The plant grows very quickly to marketable size. ‘Sogo Linluo’ can be economically propagated via tissue culture.