Inbred corn line LH302

An inbred corn line, designated LH302, is disclosed. The invention relates to the seeds of inbred corn line LH302, to the plants of inbred corn line LH302 and to methods for producing a corn plant produced by crossing the inbred line LH302 with itself or another corn line. The invention further relates to hybrid corn seeds and plants produced by crossing the inbred line LH302 with another corn line.

BACKGROUND OF THE INVENTION 
The present invention relates to a new and distinctive corn inbred line, 
designated LH302. There are numerous steps in the development of any 
novel, desirable plant germplasm. Plant breeding begins with the analysis 
and definition of problems and weaknesses of the current germplasm, the 
establishment of program goals, and the definition of specific breeding 
objectives. The next step is selection of germplasm that possess the 
traits to meet the program goals. The goal is to combine in a single 
variety or hybrid an improved combination of desirable traits from the 
parental germplasm. These important traits may include higher yield, 
resistance to diseases and insects, better stalks and roots, tolerance to 
drought and heat, and better agronomic quality. 
Choice of breeding or selection methods depends on the mode of plant 
reproduction, the heritability of the trait(s) being improved, and the 
type of cultivar used commercially (e.g., F.sub.1 hybrid cultivar, 
pureline cultivar, etc.). For highly heritable traits, a choice of 
superior individual plants evaluated at a single location will be 
effective, whereas for traits with low heritability, selection should be 
based on mean values obtained from replicated evaluations of families of 
related plants. Popular selection methods commonly include pedigree 
selection, modified pedigree selection, mass selection, and recurrent 
selection. 
The complexity of inheritance influences choice of the breeding method. 
Backcross breeding is used to transfer one or a few favorable genes for a 
highly heritable trait into a desirable cultivar. This approach has been 
used extensively for breeding disease-resistant cultivars. Various 
recurrent selection techniques are used to improve quantitatively 
inherited traits controlled by numerous genes. The use of recurrent 
selection in self-pollinating crops depends on the ease of pollination, 
the frequency of successful hybrids from each pollination, and the number 
of hybrid offspring from each successful cross. 
Each breeding program should include a periodic, objective evaluation of 
the efficiency of the breeding procedure. Evaluation criteria vary 
depending on the goal and objectives, but should include gain from 
selection per year based on comparisons to an appropriate standard, 
overall value of the advanced breeding lines, and number of successful 
cultivars produced per unit of input (e.g., per year, per dollar expended, 
etc.). 
Promising advanced breeding lines are thoroughly tested and compared to 
appropriate standards in environments representative of the commercial 
target area(s) for three years at least. The best lines are candidates for 
new commercial cultivars; those still deficient in a few traits are used 
as parents to produce new populations for further selection. 
These processes, which lead to the final step of marketing and 
distribution, usually take from eight to 12 years from the time the first 
cross is made. Therefore, development of new cultivars is a time-consuming 
process that requires precise forward planning, efficient use of 
resources, and a minimum of changes in direction. 
A most difficult task is the identification of individuals that are 
genetically superior, because for most traits the true genotypic value is 
masked by other confounding plant traits or environmental factors. One 
method of identifying a superior plant is to observe its performance 
relative to other experimental plants and to a widely grown standard 
cultivar. If a single observation is inconclusive, replicated observations 
provide a better estimate of its genetic worth. 
The goal of plant breeding is to develop new, unique and superior corn 
inbred lines and hybrids. The breeder initially selects and crosses two or 
more parental lines, followed by repeated selfing and selection, producing 
many new genetic combinations. The breeder can theoretically generate 
billions of different genetic combinations via crossing, selfing and 
mutations. The breeder has no direct control at the cellular level. 
Therefore, two breeders will never develop the same line, or even very 
similar lines, having the same corn traits. 
Each year, the plant breeder selects the germplasm to advance to the next 
generation. This germplasm is grown under unique and different 
geographical, climatic and soil conditions, and further selections are 
then made, during and at the end of the growing season. The inbred lines 
which are developed are unpredictable. This unpredictability is because 
the breeder's selection occurs in unique environments, with no control at 
the DNA level (using conventional breeding procedures), and with millions 
of different possible genetic combinations being generated. A breeder of 
ordinary skill in the art cannot predict the final resulting lines he 
develops, except possibly in a very gross and general fashion. The same 
breeder cannot produce the same line twice by using the exact same 
original parents and the same selection techniques. This unpredictability 
results in the expenditure of large research monies to develop a superior 
new corn inbred line. 
The development of commercial corn hybrids requires the development of 
homozygous inbred lines, the crossing of these lines, and the evaluation 
of the crosses. Pedigree breeding and recurrent selection breeding methods 
are used to develop inbred lines from breeding populations. Breeding 
programs combine desirable traits from two or more inbred lines or various 
broad-based sources into breeding pools from which inbred lines are 
developed by selfing and selection of desired phenotypes. The new inbreds 
are crossed with other inbred lines and the hybrids from these crosses are 
evaluated to determine which have commercial potential. 
Pedigree breeding is used commonly for the improvement of self-pollinating 
crops or inbred lines of cross-pollinating crops. Two parents which 
possess favorable, complementary traits are crossed to produce an F.sub.1. 
An F.sub.2 population is produced by selfing one or several F.sub.1 's or 
by intercrossing two F.sub.1 's (sib mating). Selection of the best 
individuals is usually begun in the F.sub.2 population; then, beginning in 
the F.sub.3, the best individuals in the best families are selected. 
Replicated testing of families, or hybrid combinations involving 
individuals of these families, often follows in the F.sub.4 generation to 
improve the effectiveness of selection for traits with low heritability. 
At an advanced stage of inbreeding (i.e., F.sub.6 and F.sub.7), the best 
lines or mixtures of phenotypically similar lines are tested for potential 
release as new cultivars. 
Mass and recurrent selections can be used to improve populations of either 
self- or cross-pollinating crops. A genetically variable population of 
heterozygous individuals is either identified or created by intercrossing 
several different parents. The best plants are selected based on 
individual superiority, outstanding progeny, or excellent combining 
ability. The selected plants are intercrossed to produce a new population 
in which further cycles of selection are continued. 
Backcross breeding has been used to transfer genes for a simply inherited, 
highly heritable trait into a desirable homozygous cultivar or inbred line 
which is the recurrent parent. The source of the trait to be transferred 
is called the donor parent. The resulting plant is expected to have the 
attributes of the recurrent parent (e.g., cultivar) and the desirable 
trait transferred from the donor parent. After the initial cross, 
individuals possessing the phenotype of the donor parent are selected and 
repeatedly crossed (backcrossed) to the recurrent parent. The resulting 
plant is expected to have the attributes of the recurrent parent (e.g., 
cultivar) and the desirable trait transferred from the donor parent. 
Descriptions of other breeding methods that are commonly used for different 
traits and crops can be found in one of several reference books (e.g., 
Allard, 1960; Simmonds, 1979; Sneep et al., 1979; Fehr, 1987). 
Proper testing should detect any major faults and establish the level of 
superiority or improvement over current cultivars. In addition to showing 
superior performance, there must be a demand for a new cultivar that is 
compatible with industry standards or which creates a new market. The 
introduction of a new cultivar will incur additional costs to the seed 
producer, the grower, processor and consumer; for special advertising and 
marketing, altered seed and commercial production practices, and new 
product utilization. The testing preceding release of a new cultivar 
should take into consideration research and development costs as well as 
technical superiority of the final cultivar. For seed-propagated 
cultivars, it must be feasible to produce seed easily and economically. 
Once the inbreds that give the best hybrid performance have been 
identified, the hybrid seed can be reproduced indefinitely as long as the 
homogeneity of the inbred parent is maintained. A single-cross hybrid is 
produced when two inbred lines are crossed to produce the F.sub.1 progeny. 
A double-cross hybrid is produced from four inbred lines crossed in pairs 
(A.times.B and C.times.D) and then the two F.sub.1 hybrids are crossed 
again (A.times.B).times.(C.times.D). Much of the hybrid vigor exhibited by 
F.sub.1 hybrids is lost in the next generation (F.sub.2). Consequently, 
seed from hybrid varieties is not used for planting stock. 
Corn is an important and valuable field crop. Thus, a continuing goal of 
plant breeders is to develop stable, high yielding corn hybrids that are 
agronomically sound. The reasons for this goal are obviously to maximize 
the amount of grain produced on the land used and to supply food for both 
animals and humans. To accomplish this goal, the corn breeder must select 
and develop corn plants that have the traits that result in superior 
parental lines for producing hybrids. 
SUMMARY OF THE INVENTION 
According to the invention, there is provided a novel inbred corn line, 
designated LH302. This invention thus relates to the seeds of inbred corn 
line LH302, to the plants of inbred corn line LH302 and to methods for 
producing a corn plant produced by crossing the inbred line LH302 with 
itself or another corn line. This invention further relates to hybrid corn 
seeds and plants produced by crossing the inbred line LH302 with another 
corn line. 
DEFINITIONS 
In the description and tables which follow, a number of terms are used. In 
order to provide a clear and consistent understanding of the specification 
and claims, including the scope to be given such terms, the following 
definitions are provided: 
Predicted RM. This trait for a hybrid, predicted relative maturity (RM), is 
based on the harvest moisture of the grain. The relative maturity rating 
is based on a known set of checks and utilizes conventional maturity 
systems such as the Minnesota Relative Maturity Rating System. 
MN RM. This represents the Minnesota Relative Maturity Rating (MN RM) for 
the hybrid and is based on the harvest moisture of the grain relative to a 
standard set of checks of previously determined MN RM rating. Regression 
analysis is used to compute this rating. 
Yield (Bushels/Acre). The yield in bushels/acre is the actual yield of the 
grain at harvest adjusted to 15.5% moisture. 
Moisture. The moisture is the actual percentage moisture of the grain at 
harvest. 
GDU Silk. The GDU silk (=heat unit silk) is the number of growing degree 
units (GDU) or heat units required for an inbred line or hybrid to reach 
silk emergence from the time of planting. Growing degree units are 
calculated by the Barger Method, where the heat units for a 24-hour period 
are: 
##EQU1## 
The highest maximum used is 86.degree. F. and the lowest minimum used is 
50.degree. F. For each hybrid, it takes a certain number of GDUs to reach 
various stages of plant development. GDUs are a way of measuring plant 
maturity. 
Stalk Lodging. This is the percentage of plants that stalk lodge, i.e., 
stalk breakage, as measured by either natural lodging or pushing the 
stalks determining the percentage of plants that break off below the ear. 
This is a relative rating of a hybrid to other hybrids for standability. 
Root Lodging. The root lodging is the percentage of plants that root lodge; 
i.e., those that lean from the vertical axis at an approximate 300 angle 
or greater would be counted as root lodged. 
Plant Height. This is a measure of the height of the hybrid from the ground 
to the tip of the tassel, and is measured in centimeters. 
Ear Height. The ear height is a measure from the ground to the ear node 
attachment, and is measured in centimeters. 
Dropped Ears. This is a measure of the number of dropped ears per plot, and 
represents the percentage of plants that dropped an ear prior to harvest.

DETAILED DESCRIPTION OF THE INVENTION 
Inbred corn line LH302 is a yellow dent corn with superior characteristics, 
and provides an excellent parental line in crosses for producing first 
generation (F.sub.1) hybrid corn. 
LH302 is a corn inbred line developed from the single cross of 
A665.times.LH206 by selfing and using the pedigree system of plant 
breeding in the development of LH302. Yield, stalk quality, root quality, 
disease tolerance, late plant greenness, late plant intactness, ear 
retention, pollen shedding ability, silking ability and corn borer 
tolerance were the criteria used to determine the rows from which ears 
were selected. 
Inbred corn line LH302 has the following morphologic and other 
characteristics (based primarily on data collected at Williamsburg, Iowa). 
VARIETY DESCRIPTION INFORMATION 
1. TYPE: Dent 
2. REGION WHERE DEVELOPED: Northcentral U.S. 
3. MATURITY: 
______________________________________ 
Days Heat Units 
______________________________________ 
From emergence to 50% of plants in silk: 
78 1380 
From emergence to 50% of plants in pollen 78 1380 
______________________________________ 
##STR1## 
1 4. PLANT: 
Plant Height (to tassel tip): 192.5 cm (SD=9.48) 
Ear Height (to base of top ear): 76.1 cm (7.53) 
Average Length of Top Ear Internode: 12.8 cm (1.03) 
Average number of Tillers: 0 (0) 
Average Number of Ears per Stalk: 1.0 (0.20) 
Anthocyanin of Brace Roots: Dark 
5. LEAF: 
Width of Ear Node Leaf: 9.0 cm (0.53) 
Length of Ear Node Leaf: 84.3 cm (3.47) 
Number of leaves above top ear: 6 (0.44) 
Leaf Angle from 2nd Leaf above ear at anthesis to Stalk above leaf: 
22.degree. (4.94) 
Leaf Color: Medium Green--Munsell Code 5 GY 4/4 
Leaf Sheath Pubescence (Rate on scale from 1=none to 9=like peach fuzz): 5 
Marginal Waves (Rate on scale from 1=none to 9=many): 3 
Longitudinal Creases (Rate on scale from 1=none to 9=many): 5 
6. TASSEL: 
Number of Lateral Branches: 7 (1.42) 
Branch Angle from Central Spike: 38.degree. (14.19) 
Tassel Length (from top leaf collar to tassel top): 36.2 cm (3.74) 
Pollen Shed (Rate on scale from 0=male sterile to 9=heavy shed): 6 
Anther Color: Pale Purple--Munsell Code 5RP 5/2 
Glume Color: Medium Green--Munsell Code 5GY 5/6 
Bar Glumes: Absent 
7a. EAR: (Unhusked Data) 
Silk Color (3 days after emergency): Light Red--Munsell Code 2.5R 5/8 
Fresh Husk Color (25 days after 50% silking): Light Green--Munsell Code 5GY 
7/8 
Dry Husk Color (65 days after 50% silking): Buff--Munsell Code 7.5YR 7/4 
Position of Ear: Upright 
Husk Tightness (Rate on scale from 1=very loose to 9=very tight): 5 
Husk Extension: Medium (&lt;8 cm) 
7b. EAR: (Husked Ear Data) 
Ear Length: 13.9 cm (1.45) 
Ear Diameter at mid-point: 36.6 mm (2.0) 
Ear Weight: 71.4 gm (17.24) 
Number of Kernel Rows: 14 (1.28) 
Kernel Rows: Distinct 
Row Alignment: Straight 
Shank Length: 13.8 cm (3.51) 
8. KERNEL: (Dried) 
Kernel Length: 9.6 mm (0.57) 
Kernel Width: 7.8 mm (0.51) 
Kernel Thickness: 4.9 mm (0.30) 
Round Kernels (Shape Grade): 36.0% (6.27) 
Aleurone Color Pattern: Homozygous 
Aleurone Color: White--Munsell Code 2.5Y 8/2 
Hard Endosperm Color: Yellow--Munsell Code 2.5Y 6/8 
Endosperm Type: Normal Starch 
Weight per 100 kernels: 24.3 gm (0.35) 
9. COB: 
Cob Diameter at Mid-Point: 29.8 mm (1.8) 
Cob Color: Red--Munsell code 1 OR 3/4 
10. DISEASE RESISTANCE: 
Rating [1=(most susceptible) through 9=(most resistant)] 
3 Eyespot (Kabatiella zeae) 
3 Helminthosporium Leaf Spot (Bipolaris zeicola) Race 3 
5 Northern Leaf Blight (Exserohilum turcicum) Race 2 
3 Southern Leaf Blight (Bipolaris maydis) 
11. AGRONOMIC TRAITS: 
2 Stay Green (at 65 days after anthesis) (Rate on scale from 1=worst to 
9=excellent) 
0% Dropped Ears (at 65 days after anthesis) 
1% Pre-anthesis Brittle Snapping 
0% Pre-anthesis Root Lodging 
0% Post-anthesis Root Lodging (at 65 days after anthesis) 
This invention is also directed to methods for producing a corn plant by 
crossing a first parent corn plant with a second parent corn plant, 
wherein the first or second corn plant is the inbred corn plant from the 
line LH302. Further, both first and second parent corn plants may be from 
the inbred line LH302. Therefore, any methods using the inbred corn line 
LH302 are part of this invention: selfing, backcrosses, hybrid breeding, 
and crosses to populations. Any plants produced using inbred corn line 
LH302 as a parent are within the scope of this invention. Advantageously, 
the inbred corn line is used in crosses with other corn varieties to 
produce first generation (F.sub.1) corn hybrid seed and plants with 
superior characteristics. 
As used herein, the term "plant" includes plant cells, plant protoplasts, 
plant cell of tissue culture from which corn plants can be regenerated, 
plant calli, plant clumps, and plant cells that are intact in plants or 
parts of plants, such as pollen, flowers, kernels, ears, cobs, leaves, 
husks, stalks, and the like. 
Tissue culture of corn is described in European Patent Application, 
Publication No. 160,390, incorporated herein by reference. Corn tissue 
culture procedures are also described in Green and Rhodes, "Plant 
Regeneration in Tissue Culture of Maize", Maize for Biological Research 
(Plant Molecular Biology Association, Charlottesville, Va. 1982), at 
367-372. Thus, another aspect of this invention is to provide for cells 
which upon growth and differentiation produce the inbred line LH302. 
LH206, one of the progenitors of LH302, is a proprietary field corn inbred 
line developed and owned by Holden's Foundation Seeds, LLC of 
Williamsburg, Iowa. After applying for plant variety protection of LH206 
in 1990, Holden's was awarded certificate #9000067 on May 31, 1991. LH206 
is also protected by a utility U.S. Pat. No. 5,304,712 granted by the U.S. 
Patent Office on Apr. 19, 1994. The other progenitor, A665 
[(ND203.times.A635) A635.sub.3 ], was developed at the University of 
Minnesota and released to the public in 1975. 
LH302 is similar to A665, however, there are numerous differences including 
the plant height. LH302 is taller in plant height than A665. There is a 
significant difference at the 1% probability level according to a paired T 
test. 
LH302 is an early season field corn inbred line that flowers similar to 
LH202. LH302 sets seed well and has potential to be used as a seed parent 
in the northern corn belt. LH302 is also a good pollinator. LH302 hybrids 
display very good staygreen in the fall and the grain of LH302 crosses has 
very good test weight. LH302 imparts excellent root quality to its 
hybrids. The maturity of LH302 crosses is similar to LH225, and it crosses 
best with LH82 and Mo17 type inbreds. 
Some of the criteria used to select ears in various generations include: 
yield, stalk quality, root quality, disease tolerance, late plant 
greenness, late season plant intactness, ear retention, pollen shedding 
ability, silking ability, and corn borer tolerance. During the development 
of the line, crosses were made to inbred testers for the purpose of 
estimating the line's general and specific combining ability, and 
evaluations were run by the Williamsburg, Iowa Research Station. The 
inbred was evaluated further as a line and in numerous crosses by the 
Williamsburg and other research stations across the Corn Belt. The inbred 
has proven to have a very good combining ability in hybrid combinations. 
The inbred has shown uniformity and stability for all traits. It has been 
self-pollinated and ear-rowed a sufficient number of generations, with 
careful attention to uniformity of plant type to ensure homozygosity and 
phenotypic stability. The line has been increased both by hand and sibbed 
in isolated fields with continued observations for uniformity. No variant 
traits have been observed or are expected in LH302. 
TABLES 
In the tables that follow, the traits and characteristics of inbred corn 
line LH302 are given in hybrid combination. The data collected on inbred 
corn line LH302 is presented for the key characteristics and traits. The 
tables present yield test information about LH302. LH302 was tested in 
several hybrid combinations at numerous locations, with two or three 
replications per location. Information about these hybrids, as compared to 
several check hybrids, is presented. 
The first pedigree listed in the comparison group is the hybrid containing 
LH302. Information for the pedigree includes: 
1. Mean yield of the hybrid across all locations. 
2. A mean for the percentage moisture (% M) for the hybrid across all 
locations. 
3. A mean of the yield divided by the percentage moisture (Y/M) for the 
hybrid across all locations. 
4. A mean of the percentage of plants with stalk lodging (% Stalk) across 
all locations. 
5. A mean of the percentage of plants with root lodging (% Root) across all 
locations. 
6. A mean of the percentage of plants with dropped ears (% Drop). 
7. A mean of the plant height (Plant Hgt) in centimeters. 
8. A mean of the ear height (Ear Hgt) in centimeters 
9. The number of locations indicates the locations where these hybrids were 
tested together. 
The series of hybrids listed under the hybrid containing LH302 are 
considered check hybrids. The check hybrids are compared to hybrids 
containing the inbred LH302. 
The (+) or (-) sign in front of each number in each of the columns 
indicates how the mean values across plots of the hybrid containing inbred 
LH302 compare to the check crosses. A (+) or (-) sign in front of the 
number indicates that the mean of the hybrid containing inbred LH302 was 
greater or lesser, respectively, than the mean of the check hybrid. For 
example, a +4 in yield signifies that the hybrid containing inbred LH302 
produced 4 bushels more corn than the check hybrid. If the value of the 
stalks has a (-) in front of the number 2, for example, then the hybrid 
containing the inbred LH302 had 2% less stalk lodging than the check 
hybrid. 
TABLE 1 
______________________________________ 
OVERALL COMISONS 
LH51 .times. LH302 HYBRID VERSUS CHECK HYBRIDS 
Mean % % % Plant 
Ear 
Pedigree Yield % M Y/M Stalk Root Drop Hgt Hgt 
______________________________________ 
LH51 .times. LH302 
168 21.14 7.97 6 0 1 112 50 
(at 17 Loc's) 
As Compared To: 
LH227 .times. LH218 -8 -3.47 0.80 -2 0 0 -10 -1 
LH74 .times. LH51 +11 -3.23 1.50 -3 0 0 +2 -4 
LH227 .times. LH185 -10 -1.33 0.03 -2 0 0 -5 -1 
LH200 .times. LH167 +5 -0.65 0.48 0 0 +1 +6 +3 
LH227 .times. LH186 -6 0.35 -0.43 -3 0 -1 -6 -4 
LH200 .times. LH291 +6 0.48 0.09 +1 0 0 +2 +2 
______________________________________ 
TABLE 2 
______________________________________ 
OVERALL COMISONS 
LH185 .times. LH302 HYBRID VERSUS CHECK HYBRIDS 
Mean % % % Plant 
Ear 
Pedigree Yield % M Y/M Stalk Root Drop Hgt Hgt 
______________________________________ 
LH185 .times. LH302 
175 18.34 9.52 3 0 1 102 41 
(at 13 Loc's) 
As Compared To: 
LH227 .times. LH185 -6 -2.26 0.77 0 0 0 -4 -2 
LH202 .times. LH172 +11 -1.37 1.21 -1 0 0 +9 +2 
LH228 .times. LH185 +2 -1.31 0.73 0 0 0 -1 -1 
LH198 .times. LH176 +5 -0.10 0.35 -1 0 0 +5 +6 
______________________________________ 
TABLE 3 
______________________________________ 
OVERALL COMISONS 
LH169 .times. LH302 HYBRID VERSUS CHECK HYBRIDS 
Mean % % % Plant 
Ear 
Pedigree Yield % M Y/M Stalk Root Drop Hgt Hgt 
______________________________________ 
LH169 .times. LH302 
160 20.66 7.74 3 1 0 103 42 
(at 14 Loc's) 
As Compared To: 
Pioneer Brand -14 -2.28 0.15 -2 -1 0 -3 +1 
LH198 .times. LH176 -9 -1.69 0.16 -1 0 0 +3 -1 
LH202 .times. LH169 -11 -1.35 -0.03 -4 -3 0 -9 -6 
LH228 .times. LH169 -6 -1.25 0.18 -3 -1 0 +5 +3 
LH227 .times. LH176 -8 0.21 -0.47 -2 0 0 +2 +2 
______________________________________ 
TABLE 4 
______________________________________ 
OVERALL COMISONS 
LH177 .times. LH302 HYBRID VERSUS CHECK HYBRIDS 
Mean % % % Plant 
Ear 
Pedigree Yield % M Y/M Stalk Root Drop Hgt Hgt 
______________________________________ 
LH177 .times. LH302 
168 17.67 9.51 3 0 0 106 43 
(at 7 Loc's) 
As Compared To: 
LH202 .times. LH163 +15 -3.99 2.46 -3 0 0 +6 +2 
LH202 .times. LH177 -2 -2.00 0.87 -1 -2 0 +1 +1 
Pioneer Brand -1 -1.74 0.81 -6 0 0 +3 -1 
LH227 .times. LH177 +5 -1.08 0.82 -3 -1 0 -6 -6 
LH227 .times. LH176 +7 -0.49 0.65 -5 0 0 +1 0 
LH225 .times. LH177 +12 0.27 0.56 -5 -1 0 -2 -1 
______________________________________ 
DEPOSIT INFORMATION 
Inbred seeds of LH302 have been placed on deposit with the American Type 
Culture Collection (ATCC), Manassas, Va., under Deposit Accession Number 
203296 on Sep. 30, 1998. A Plant Variety Protection Certificate is being 
applied for with the United States Department of Agriculture. 
Although the foregoing invention has been described in some detail by way 
of illustration and example for purposes of clarity and understanding, it 
will be obvious that certain changes and modifications may be practiced 
within the scope of the invention, as limited only by the scope of the 
appended claims.