Plants – Fruit – Strawberry
Plant Patent
2000-11-09
2003-02-04
Campell, Bruce R. (Department: 1661)
Plants
Fruit
Strawberry
Plant Patent
active
PP013546
ABSTRACT:
LATIN NAME OF THE GENUS AND SPECIES OF THE PLANT CLAIMED
Fragaria ananassa.
VARIETY DENOMINATION
PS-2299.
BACKGROUND OF THE INVENTION
The present invention relates to a new and distinct everbearing strawberry variety designed as ‘PS-2299’. This new variety is a result of a controlled cross of ‘Selva’ (U.S. Plant Pat. No. 5,266) and ‘PS-144’ (an unpatented Plant Sciences, Inc. selection). The variety is botanically known as
Fragaria ananassa.
The seedling resulting from the aforementioned cross was asexually propagated by stolons in a nursery located in Lassen County, Calif., and was subsequently selected from a controlled breeding plot near Salinas, Calif. in 1994. After its selection, the new variety was further asexually propagated in Lassen County, Calif., Modoc County, Calif., and Siskiyou County, Calif. by stolons and extensively tested over the next several years in fruiting fields near Salinas, Calif. This propagation has demonstrated that the combination of traits disclosed herein as characterizing the new variety are fixed and remain true to type through successive generations of asexual reproduction.
BRIEF SUMMARY OF THE INVENTION
‘PS-2299’ is primarily adapted to the climate and growing conditions of the central coast of California. This region provides the necessary winter temperatures required for it to produce a strong vigorous plant and to remain in fruit production from April through November. The nearby Pacfic Ocean provides the needed humidity and moderate temperatures to maintain fruit quality during the winter and spring production months. The following list of traits in combination defines ‘PS-2299’ as a unique variety distinguishing it from other closely related commercial varieties in the region. The varieties which are believed to be the most closely related to ‘PS-2299’ are ‘PS-592’ (U.S. Plant Pat. No. 9,903) and ‘PS-1150’ (U.S. Plant Pat. No. 10,780).
‘PS-2299’ is a large vigorous plant. The average length of time from flowering to ripening is between 26 and 32 days, depending on environmental conditions. In cooler temperatures ripening time is longer, in warmer temperatures ripening time is shorter. When provided with optimum chilling in nursery propagation fields prior to being dug and artificial cold storage prior to being planted, the plant of ‘PS-2299’ is larger and more vigorous than the variety ‘PS-1150’. The foliage of ‘PS-2299’ is slightly darker in color than both ‘PS-592’ and ‘PS-1150’. The leaf in cross section of ‘PS-2299’ is slightly concave to slightly convex while ‘PS-592’ is slightly concave. The terminal leaf length to width ratio of ‘PS-2299’ is longer than broad while ‘PS-592’ is much longer than broad. The leaf blistering of ‘PS-2299’ is medium to strong while ‘PS-1150’ is medium to weak. Terminal leaflet size of ‘PS-2299’ is medium to large while ‘PS-592’ is large and ‘PS-1150’ is medium to small. Leaf gloss of ‘PS-2299’ is medium while ‘PS-592’ is strong and ‘PS-1150’ is weak. Stipule anthocyanin coloration of ‘PS-2299’ is strong while ‘PS-1150’ is absent or very weak. The petioles of ‘PS-2299’ are longer in length and larger in diameter than ‘PS-1150’. Table 4 illustrates foliage characteristics of ‘PS-2299’, ‘PS-592’ and ‘PS-1150’.
‘PS-2299’ is capable of long season fruit production with fruit of good size and excellent quality during the entire season when provided with optimum chilling in nursey propagation fields and artifical cold storage prior to being planted. Fruit production begins as early as late March to early April, and may continue cropping into November if rains and cold temperatures do not prevent the harvest. This is earlier with a heavier April/May crop than ‘PS-1150’ yet similar to ‘PS-592’. ‘PS-2299’ season average fruit size is slightly larger than ‘PS-1150’ yet smaller than ‘PS-592’ with total yields less than ‘PS-592’ and slightly greater than ‘PS-1150’. ‘PS-2299’ also produces fewer and thinner runners per plant in the fruiting fields than ‘PS-592’ (Table 1). The stolon anthocyanin coloration of ‘PS-2299’ is medium to strong while ‘PS-592’ is medium to weak. The stolon pubescence of ‘PS-2299’ is weak whie ‘PS-592’ is medium and ‘PS-1150’ is medium to strong.
The fruit of ‘PS-2299’ is smooth with very few longitudinal creases and very good overall appearance and gloss. See Table 3 for fruit quality performance ratings. The average soluble solid content of the fruit measured in percent Brix is 7.7, with percent Brix being an indirect measurement of the sugar content in fruit. The fruit length to width ratio of ‘PS-2299’ is much longer than broad while both ‘PS-592’ and ‘PS-1150’ are as long as broad to slightly longer than broad. The fruit color of ‘PS-2299’ is medium red while ‘PS-592’ is light red. Immature fruit color of ‘PS-2299’ is medium to light greenish white, ranging from 10Y 8.5/4 to 10Y 8/6. Flesh color of ‘PS-2299’ is medium red, ranging from 7.5R 4/10 to 7.5R 4/12. The attitude of the calyx segments of ‘PS-2299’ is typically collapsing to spreading while ‘PS-592’ is spreading to reflexed. The size of the calyx in relation to the fruit diameter of ‘PS-2299’ is much larger while both ‘PS-592’ and ‘PS-1150’ are slightly larger. The fruit flesh firmness of ‘PS-2299’ is firm while ‘PS-592’ is medium. The skin firmness of ‘PS-2299’ is very firm while ‘PS-592’ is medium firm. The fruit flavor of ‘PS-2299’ is less sweet as compared to ‘PS-592’. Table 2 illustrates fruit characteristics of ‘PS-2299’, ‘PS-592’ and ‘PS-1150’. ‘PS-2299’ seeds are medium yellow to medium red, ranging from 5Y 6/8 to 7.5R 3/8 with a receptacle color of white, ranging from N9.25/84.2% R to N9/78.7% R.
The total inflorescence length of ‘PS-2299’ is longer than ‘PS-1150’. ‘PS-2299’ has a longer and thicker primary peduncle than ‘PS-1150’ while the pedicel holding the primary berry is similar in length to both ‘PS-592’ and ‘PS-1150’ yet larger in diameter than ‘PS-1150’. The inflorescence position relative to the foliage for ‘PS-2299’ is typically held above the plant while ‘PS-592’ typically is held level with to beneath the foliage of the plant. Typically the inflorescence anthocyanin coloration of ‘PS-2299’ is moderate while ‘PS-592’ is light and ‘PS-1150’ is strong. See Table 5 for inflorescence characteristics. The flower size of ‘PS-2299’ is large while ‘PS-1150’ is medium. The petal length to width ratio of ‘PS-2299’ is broader than long while ‘PS-592’ is as long as broad and ‘PS-1150’ is longer than broad. See Table 6 for flower characteristics.
In comparison to the parental cultivars, the average fruit size of ‘PS-2299’ is smaller than both ‘Selva’ and ‘PS-144’ with comparable yields to ‘Selva’ and greater yields than ‘PS-144’. The fruit of ‘PS-2299’ is more uniformly conic in shape, smoother, with fewer longitudinal creases than both ‘Selva’ and ‘PS-144’, with firmer skin, gloss, and overall appearance. The fruit color of ‘PS-2299’ is darker than ‘Selva’. The plant vigor of ‘PS-2299’ is greater than ‘Selva’ and similar to ‘PS-144’.
For identification a series of molecular markers have been determined for this new variety.
Ackerman Stephen M.
Nelson Michael D.
Nelson Steven D.
Campell Bruce R.
Foley & Lardner
Grünberg Anne Marie
Plant Sciences Inc.
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