Patent Grant
PP21538
Genus and species: Fragaria×ananassa.
Variety denomination: ‘DrisStrawTwelve’.
The present invention relates to a new and distinct strawberry cultivar designated ‘DrisStrawTwelve’ and botanically known as Fragaria×ananassa. This new strawberry cultivar was discovered in Hillsborough, Fla. in December 2004 and originated from a cross between ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298) and ‘Driscoll Bonaire’ (U.S. Plant Pat. No. 18,041). The original seedling of the new cultivar was first asexually propagated at a nursery in Shasta County, Calif.
‘DrisStrawTwelve’ was subsequently asexually propagated in Shasta County, Calif. and underwent further testing Hillsborough, Fla. for four years. The present invention has been found to retain its distinctive characteristics through successive asexual propagations.
The accompanying color photographs show typical specimens of the new cultivar at various stages of development as nearly true as it is possible to make in color reproductions. The photographs were taken from 5-month-old plants.
The following description of ‘DrisStrawTwelve’ is based on observations taken in Hillsborough, Fla. from 2005 to 2008. This description is in accordance with UPOV terminology. Color designations, color descriptions, and other phenotypical descriptions may deviate from the stated values and descriptions depending upon variation in environmental, seasonal, climatic and cultural conditions. ‘DrisStrawTwelve’ has not been observed under all possible environmental conditions. The botanical description of ‘DrisStrawTwelve’ was taken from 5-month-old plants and the botanical descriptions of the comparison varieties, ‘Driscoll Atlantis’ (U.S. Plant Pat. No. 16,475) and ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298), were also taken from 5-month-old plants. Color terminology follows The Royal Horticultural Society Colour Chart, London (R.H.S.) (2001).
Table 1 shows selected plant characteristics of the new variety compared with plant characteristics of ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ Plant characteristics include plant habit, terminal leaflet length, time of flowering, and fruit production.
Table 2 shows plant characteristics of the new variety compared with plant characteristics of the commercial varieties ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ Plant characteristics include plant height, diameter, number of crowns per plant, habit, the density of individual plants and the vigor.
Table 3 shows leaf characteristics of the new cultivar compared with leaf characteristics of ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ Leaf characteristics include terminal leaflet length and width in centimeters, length to width ratio, number of teeth per terminal leaflet, shape of teeth, color of upper side and underside of leaf, leaf shape in cross section, leaf blistering, leaf glossiness, number of leaflets, terminal leaflet margin, terminal leaflet length to width ratio, overall leaf shape and shape of leaf apex and base.
Table 4 shows information about the petiole, the petiolule, the bract, and the stipule of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ This includes petiole length in centimeters, petiole diameter in centimeters, petiole pubescence, pose of hairs on the petiole, color of the petiole, color of the petiolule, petiolule length in centimeters, petiolule diameter in centimeters, bract frequency per petiole, stipule length in centimeters, stipule width in centimeters, stipule pubescence and stipule anthocyanin coloration.
Table 5 shows stolon characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include the number of stolons, average number of daughter plants, the anthocyanin coloration of the stolons, the thickness of the stolons, and the pubescence of the stolons.
Table 6 shows inflorescence characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include inflorescence position relative to foliage, time of flowering, relative flower size, flower diameter in centimeters (measured from petal tip to petal tip), petal shape, relative spacing of petals, petal apex, base and margin, petal length in centimeters, petal width in centimeters, petal length to width ratio, number of petals, petal color, calyx diameter in centimeters (measured on back of flower from sepal tip to sepal tip), diameter of calyx relative to corolla, diameter of inner calyx relative to outer, sepal shape, apex and margin, sepal length in centimeters (measured from sepal tip to point of attachment to receptacle), sepal width in centimeters, number of sepals, receptacle color and anther color.
Table 7 shows fruit characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include fruiting truss length in centimeters, fruiting truss diameter, number of berries per truss, fruiting truss attitude, fruiting truss color, fruit length in centimeters, fruit truss width in centimeters, fruit length to width ratio, fruit hollow length and width in centimeters, fruit hollow length to width ratio, fruit weight in grams, relative fruit size, predominant fruit shape, difference in shape between primary and secondary fruits, band without achenes, unevenness of fruit surface, fruit skin color, evenness of fruit color, fruit glossiness, insertion of achenes, achene coloration (sunward and shaded sides of berry) and the number of achenes per berry.
Table 8 shows fruit characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel.’ These characteristics include the harvest maturity, insertion of calyx, pose of calyx segments, size of calyx in relation to fruit, adherence of calyx, firmness of flesh, color of the fruit flesh, evenness of the flesh color, distribution of flesh color, hollow center, sweetness of fruit, acidity of fruit, texture of fruit when tasted, type of bearing, grams of fruit per plant.
Table 9 shows pest, stress and disease characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel’.
Botrytis fruit rot
Xanthomonas
fragariae
When ‘DrisStrawTwelve’ is compared to the female parent ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298), ‘DrisStrawTwelve’ has greater fruit production, larger fruit and fewer daughter plants than does ‘Driscoll Sanibel.’ In addition, ‘DrisStrawTwelve’ has moderate resistance to Botrytis fruit rot and powdery mildew while ‘Driscoll Sanibel’ is susceptible to both diseases.
When ‘DrisStrawTwelve’ is compared to the male parent ‘Driscoll Bonaire’ (U.S. Plant Pat. No. 18,041), ‘DrisStrawTwelve’ is a taller plant with dark yellow-green leaves than ‘Driscoll Bonaire’ which has medium green leaves. In addition, ‘DrisStrawTwelve’ produces more fruit than ‘Driscoll Bonaire’ although ‘DrisStrawTwelve’ has fewer daughter plants. ‘DrisStrawTwelve’ is also moderately resistant to Botrytis fruit rot while ‘Driscoll Bonaire’ is susceptible; ‘DrisStrawTwelve’ is moderately resistant to powdery mildew and Xanthomonas fargariae while ‘Driscoll Bonaire’ is moderately susceptible to both diseases.
