Strawberry plant named ‘DrisStrawSeven’

Info

Patent number: PP20922
Type: Grant
Filed: Oct 6, 2008
Date of Patent: Apr 6, 2010
Assignee: Driscoll Strawberry Associates, Inc. (Watsonville, CA)
Inventors: Kristie L. Gilford (Dover, FL), Bruce D. Mowrey (Watsonville, CA), Philip J. Stewart (Watsonville, CA), Esther J. Pullen (Valrico, FL), Jorge Rodriguez-Alcazar (Texcoco)
Primary Examiner: Susan B McCormick Ewoldt
Attorney: Jondle & Associates, P.C.
Application Number: 12/287,109

Abstract

This invention relates to a new and distinct cultivar of strawberry plant named ‘DrisStrawSeven’. The new cultivar is primarily characterized by its large, sweet tasting fruit, early harvest maturity, and resistance to powdery mildew is disclosed.

Description

Description

Genus and species: Fragaria×ananassa.

Variety denomination: ‘DrisStrawSeven’.

BACKGROUND OF THE NEW PLANT

The present invention relates to a new and distinct strawberry cultivar designated ‘DrisStrawSeven’ and botanically known as Fragaria×ananassa. This new strawberry cultivar was discovered in Monterey, Calif. in June, 2003 and originated from a cross between the female proprietary parent ‘77G1’ (unpatented) and the male parent ‘Driscoll Camarillo’ (U.S. Plant Pat. No. 14,771). The original seedling of the new cultivar was asexually propagated at a nursery in Shasta County, Calif. ‘DrisStrawSeven’ was subsequently asexually propagated and underwent further testing at a nursery in Hillsborough, Fla. for four years. The present invention has been found to retain its distinctive characteristics through successive asexual propagations.

DESCRIPTION OF THE PHOTOGRAPHS

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.

FIG. 1 shows overall plant habit including fruit at various stages of development.

FIG. 2 shows leaves of the plant with three leaflets.

FIG. 3 shows the upperside of several of the flowers.

FIG. 4 shows the whole fruit.

FIG. 5 shows the fruit in longitudinal cross-section.

DESCRIPTION OF THE NEW CULTIVAR

The following description of ‘DrisStrawSeven’ is based on observations taken from the 2003 to 2008 growing seasons in Hillsborough, Fla. 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. ‘DrisStrawSeven’ has not been observed under all possible environmental conditions. The botanical description of ‘DrisStrawSeven’ was taken from 5-month-old plants. Color terminology follows The Royal Horticultural Society Colour Chart, London (RHS) (2001).

DETAILED BOTANICAL DESCRIPTION

Table 1 shows selected plant characteristics of the new variety compared with plant characteristics of ‘Driscoll Atlantis’, (U.S. Plant Pat. No. 16,475) and ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298). Plant characteristics include plant height, petiolule length, stipule width, inflorescence position relative to foliage, flower size, fruit truss diameter, and fruit size.

TABLE 1 ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Plant height 20.9 19.8 20.2 (cm) Petiolule length 1.394 1.451 1.626 (cm) Stipule width 0.420 0.087 0.112 (cm) Inflorescence Above Between above Between beneath position rela- and level with and level with tive to foliage Flower size Medium Between medium Large and large Fruit truss 0.522 0.423 0.404 diameter (cm) Fruit size Large Medium Between large and very large

Table 2 shows plant characteristics of the new variety compared with plant characteristics of the commercial varieties ‘Driscoll Atlantis’ (U.S. Plant Pat. No. 16,475) and ‘Driscoll Sanibel’ (U.S. Plant Pat. No. 16,298). Plant characteristics include plant height, diameter, number of crowns per plant, habit, density of individual plant and vigor.

TABLE 2 ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Plant height 20.9 19.8 20.2 (cm) Plant diameter 35.5 38.9 38.7 (cm) Number of 3 3 2 crowns/plant Habit Flat globose Flat globose Flat Density of Medium Medium to Dense Medium individual plant Vigor Medium Medium Strong

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 upperside 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 and shape of leaf apex and base.

TABLE 3 Leaf ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Terminal leaf- 7.97 7.89 8.56 let length (cm) Terminal leaf- 7.96 8.01 8.47 let width (cm) Terminal leaf- 1.0 1.0 1.0 let length/ width ratio No. teeth/ter- 23 23 22 minal leaflet Shape of teeth Rounded Between obtuse Rounded and rounded Color of upper- RHS 147A RHS 137A RHS 131B side of leaf Dark yellow- Dark green Dark green green Color of under- RHS 138B RHS 140D RHS 142C side of leaf Medium green Light green Light green Leaf shape Slightly concave Between slightly Slightly concave in cross section concave and flat Leaf blistering Strong Medium Between medium and strong Leaf glossiness Medium Weak Medium No. leaflets More than three Three only Three only (up to 5 out of 10 leaves) Terminal leaf- Flat Flat Flat let margin Terminal leaf- As long as broad As long as broad As long as broad let: length/ width ratio Terminal leaf- Orbicular Ovate Between oval and let shape ovate Terminal leaf- Rounded Obtuse let base shape Terminal leaf- Rounded Rounded Rounded let apex shape

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, and stipule pubescence.

TABLE 4 ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Petiole length 12.7 13.7 15.3 (cm) Petiole 0.456 0.430 0.455 diameter (cm) Petiole Between medium Dense Medium pubescence and dense Petiole pose Between upwards Outwards Between of hairs and outwards outwards and downwards Petiole color RHS 144D Light RHS 145C Light RHS 145D Light yellow-green yellow-green yellow-green Petiolule color RHS 144D Light RHS 145C Light RHS 145D Light yellow-green yellow-green yellow-green Petiolule length 1.394 1.451 1.626 (cm) Petiolule dia- 0.237 0.213 0.233 meter (cm) Bract 2 2 2 frequency Stipule length 3.8 3.7 3.9 (cm) Stipule width 0.420 0.087 0.112 (cm) Stipule Medium Dense Medium pubescence Stipule antho- Medium cyanin color- ation

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 5 ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Stolon Number Many Average number of 55 53 52 daughter plants Stolon Anthocyanin Medium Between weak and Strong medium Stolon Thickness Medium Medium Medium Stolon Pubescence Sparse Medium Medium

Table 6 shows inflorescence characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel’. These characteristics include inflorescence position relative to foliage, 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 6 ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Inflorescence Above Between level Between beneath position rel- with and above and level with ative to foliage Flower size Medium Between medium Large and large Flower di- 2.238 2.369 2.070 ameter (cm) Petal shape Orbicular Orbicular Orbicular Petal spacing Overlapping Overlapping Between touching and overlapping Petal apex Rounded Rounded Rounded shape Petal margin Entire Entire Entire Petal base Rounded Rounded Rounded shape Petal length 1.043 1.248 1.166 (cm) Petal width 1.081 1.302 1.188 (cm) Petal length/ As long as broad As long as broad As long as broad width ratio Typical and ob- 6 5 6 served petal number Petal color RHS 155D RHS 155C RHS 155C White White White Calyx diameter 2.789 2.871 2.997 (cm) Calyx diameter Between smaller Between same Between same relative to and same size size and larger size and larger corolla Inner calyx Same size Same size Larger diameter re- lative to outer Sepal shape Elliptical Elliptical Elliptical Sepal apex Convex Convex Convex shape Sepal margin Entire Entire Entire Sepal length 0.989 1.040 1.172 (cm) Sepal width 0.508 0.713 0.637 (cm) Typical and 12 11 11 observed sepal number Receptacle RHS 3A RHS 149A RHS 149B color Medium yellow Medium yellow Medium yellow green green Anther color RHS 7A RHS 9A RHS 9A Dark yellow Dark yellow Dark yellow

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 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), 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, time of flowering, harvest maturity, type of bearing, grams of fruit per plant.

TABLE 7 ‘Driscoll ‘Driscoll Characteristic ‘DrisStrawSeven’ Atlantis’ Sanibel’ Fruiting truss 22.2 22.7 19.7 length (cm) Fruiting truss 0.522 0.423 0.404 diameter (cm) Number of 3 3 1 berries per fruiting truss Fruiting truss Between erect Prostrate Prostrate attitude and semi-erect Fruiting truss RHS 144D RHS 145B RHS 144B color Light yellow Light yellow Light yellow green green green Fruit length 4.890 4.200 5.180 (cm) Fruit width 3.720 3.640 4.610 (cm) Fruit length/ 1.3 1.2 1.1 width ratio Fruit length/ Longer than Longer than Longer than width ratio broad broad broad Fruit hollow 2.130 1.880 2.310 length (cm) Fruit hollow 0.420 0.850 0.790 width (cm) Fruit hollow 5.1 2.2 2.9 length/width ratio Fruit weight (g) 26.7 23.8 31.8 Relative fruit Large Medium Between large size and very large Predominant Conical Conical Conical fruit shape Difference in Slight Slight Slight shape between primary & sec- ondary fruits Band without Narrow Absent or very Narrow achenes narrow Unevenness of Medium Between weak Medium fruit surface and medium Fruit skin RHS 46A RHS 45B RHS 43A color Dark red Medium red Medium red Evenness of Even Even Even fruit color Fruit glossiness Between medium Strong Strong and strong Insertion of Level with Level with Level with achenes surface surface surface Achene color- RHS 145A Light RHS 151D Light RHS 150C Light ation - shaded yellow-green yellow-green yellow-green side of berry Insertion of Level Level Level calyx Pose of calyx Spreading Between Between segments spreading and spreading and reflexed reflexed Size of calyx in Between same Between same Larger relation to size and larger size and larger fruit Adherence of Strong Strong Strong calyx Firmness of Between medium Firm Medium flesh and firm Color of RHS 40B RHS 42B RHS 40C the flesh Medium red Medium red Medium red Evenness of Between uneven Slightly uneven Slightly uneven flesh color and slightly uneven Distribution of Marginal and Marginal and Marginal and flesh color central central central Hollow center Small Medium Medium Sweetness Strong Strong Strong Acidity Between weak Medium Medium and medium Texture when Fine Medium Fine tasted Time of Medium Very early Early flowering Harvest matur- Early December Late November Late November ity (50% of to late April to mid-March to mid-March plants with ripe fruit) Type of Not everbearing Partially Partially bearing everbearing everbearing Grams of fruit/ 402 360 448 plant

Table 8 shows pest and disease characteristics of the new cultivar compared to ‘Driscoll Atlantis’ and ‘Driscoll Sanibel’.

TABLE 8 ‘Driscoll ‘Driscoll Pest or Disease ‘DrisStrawSeven’ Atlantis’ Sanibel’ Xanthomonas Susceptible Moderately Moderately fragariae susceptible susceptible Powdery mildew Resistant Susceptible Susceptible

COMPARISON WITH PARENTAL CULTIVARS

When ‘DrisStrawSeven’ is compared to the proprietary female parent ‘77G1’ (unpatented), ‘DrisStrawSeven’ is a short-day plant, whereas ‘77G1’ is a day-neutral plant.

When ‘DrisStrawSeven’ is compared to the male parent ‘Driscoll Camarillo’ (U.S. Plant Pat. No. 14,771), ‘DrisStrawSeven’ is a globose plant that is not everbearing, whereas ‘Driscoll Camarillo’ is a flat globose plant that is fully everbearing. In addition, the leaf shape in cross section of ‘DrisStrawSeven’ is slightly concave and ‘DrisStrawSeven’ has more than three leaflets. The leaf shape in cross section of ‘Driscoll Camarillo’ is concave and ‘Driscoll Camarillo’ has only three leaflets. Further, the fruiting truss attitude in ‘DrisStrawSeven’ is between erect and semi-erect, whereas it is prostrate in ‘Driscoll Camarillo’.

Claims

1. A new and distinct cultivar of strawberry plant as described and shown herein.