Blackberry plant named ‘DrisBlackThirty’

Abstract

A new and distinct variety of blackberry plant named ‘DrisBlackThirty’, particularly selected for its plant health, berry size, flavor, and firmness, and spineless canes, is disclosed.

Claims

1. A new and distinct variety of blackberry plant designated ‘DrisBlackThirty’ as shown and described herein.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) This new blackberry plant is illustrated by the accompanying photographs. The colors shown are as true as can be reasonably obtained by conventional photographic procedures. The photographs are of plants that are two to five years old.

(2) FIG. 1 illustrates leaves of variety ‘DrisBlackThirty’.

(3) FIG. 2 illustrates a section of a cane of variety ‘DrisBlackThirty’.

(4) FIG. 3 illustrates flowers of variety ‘DrisBlackThirty’ at various stages of development.

(5) FIG. 4 illustrates fruits of variety ‘DrisBlackThirty’ at various stages of development.

DETAILED BOTANICAL DESCRIPTION

(6) The following descriptions set forth the distinctive characteristics of ‘DrisBlackThirty’. The data that define these characteristics are based on observations taken in Santa Cruz County, Calif. from 2017 to 2021. 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. ‘DrisBlackThirty’ has not been observed under all possible environmental conditions. The botanical description of ‘DrisBlackThirty’ was taken from plants that were two to five years old. The indicated values represent averages calculated from measurements of several plants. Color references are primarily to The R.H.S. Colour Chart of The Royal Horticultural Society of London (R.H.S.) (2015 edition). Descriptive terminology follows the Plant Identification Terminology, An Illustrated Glossary, 2.sup.nd edition by James G. Harris and Melinda Woolf Harris, unless where otherwise defined. Classification: Family.—Rosaceae. Botanical.—Rubus L. subgenus Rubus. Common name.—Blackberry. Variety name.—‘DrisBlackThirty’. Parentage: Female parent.—‘BW337 2 Bulk’ (unpatented). Male parent.—‘BS880.1’ (unpatented). Plant: Propagation.—Root cuttings and tissue culture. Growth habit.—Upright to semi-upright. Height.—119 cm. Width.—92 cm. Height/width ratio.—1.3. Vigor.—Medium. Self-fruitfulness.—Self-fruitful. Canes: Internodal distance.—6 cm. New cane.—Strength: Medium. Glaucosity (waxy bloom): Strong. Dormant cane.—Anthocyanin coloration: Weak. Color: RHS 146A (Moderate olive green). Predominant distribution of branches: Over whole length. Cross-section: Angular to grooved. Spine: Presence of spines: Absent. Fruiting lateral.—Fruiting lateral length (4.sup.th lateral from tip): 33 cm. Number of fruits per fruiting lateral: 16. Young shoots.—Length: 208 cm. Diameter: 3 cm. Anthocyanin coloration (during rapid growth): Medium. Color: RHS 148A (Moderate yellow green). Number of glandular hairs: Absent or few. Time of young shoot emergence: Mid-April. Leaves: Time of leaf bud burst.—Mid-January. Leaf.—Predominant number of leaflets: 5. Type: Palmate. Relative position of lateral leaflets: Overlapping. Arrangement: Alternate, facing up. Venation: Dichotomous. Vein color: RHS 152D (Dark greenish yellow). Color of upper side: RHS 147A (Moderate olive green). Color of lower side: RHS 138B (Moderate yellow green). Profile in cross-section: Concave (margins rolled inwards). Glossiness of upper side: Medium. Leaflet.—Type of incision of margin: Bi-serrate. Depth of margin incisions: Medium. Terminal leaflet.—Length: 13 cm. Width: 10 cm. Length/width ratio: 1.3. Shape: Ovate. Apex: Acuminate. Base: Obtuse. Margin: Doubly serrate. Lobing: Absent. Shape in cross-section: V-shaped. Undulation of margin: Absent or very weak. Blistering between veins: Medium. Lateral leaflet (single leaflet in basal pair).—Length: 10 cm. Width: 6 cm. Length/width ratio: 1.67. Shape: Ovate. Apex: Acuminate. Base: Obtuse. Margin: Doubly serrate. Rachis (length between terminal leaflet and adjacent lateral leaflets).—5 cm. Petiole.—Length: 9 cm. Diameter: 2 mm. Color of upper surface: RHS 138B (Moderate yellow green). Color of lower surface: RHS 144A (Strong yellow green). Stipule.—Length: 2 cm. Width: 1 mm. Color: RHS 147A (Moderate olive green). Orientation: Clasping. Inflorescence: Flower bud.—Length: 6 mm. Width: 10 mm. Color: RHS 191A (Greyish yellow green). Flower.—Diameter: 37 mm. Number of flowers observed at 3.sup.rd node from tip of lateral: 3. Fragrance: Faint. Petal.—Length: 17 mm. Width: 13 mm. Length/width ratio: 1.31. Number of petals per flower: 5. Color: RHS 155B (Yellowish white). Shape: Oval. Apex: Complex. Base: Cuneate. Margin: Erose. Sepal.—Length: 10 mm. Width: 7 mm. Color: RHS 138D (Light green). Flower pedicel.—Length: 34 mm. Diameter: 2 mm. Color: RHS 138C (Moderate yellow green). Inflorescence peduncle.—Length: 32 mm. Diameter: 2 mm. Color: RHS 138C (Moderate yellow green). Reproductive organs.—Style: Length: 2 mm. Color: RHS 140A (Vivid yellowish green). Ovary: Color: RHS 143B (Strong yellow green). Stamen: Length: 4 mm. Color: RHS 145A (Strong yellow green). Pollen: Amount: Medium. Time of beginning of flowering on previous year's cane (floricane).—Early/Mid-April. Time of beginning of flowering on current year's cane (primocane).—Mid-August. Fruit: Length of mature fruit.—25 mm. Diameter of mature fruit.—19 mm. Ratio of length to width.—1.32. Floricane fruit weight.—11 g/fruit. Primocane fruit weight.—11 g/fruit. Sweetness/soluble solids (in ° Brix).—14. Titratable acidity (% as citric acid).—1.76%. Glossiness.—Medium. Firmness.—Soft. Fruit shape in longitudinal section.—Elliptic. Fruit color.—RHS 203A (Black). Drupe.—Length of single drupe: 5 mm. Diameter of single drupe: 5 mm. Average number of drupes per fruit: 100. Seed.—Diameter: 2 mm. Weight: 0.00262 g/seed. Color: RHS 167D (Moderate orange yellow). Fruiting on current year's cane.—Present. Harvest interval on previous year's cane (floricane).—Month of June. Harvest interval on current year's cane (primocane).—Late August to September. Yield.—12,500 pounds (lbs) to 20,500 pounds (lbs) of fruit per acre per season from 24-36 month-old plants when grown in Watsonville, Calif. Resistance to pests and diseases: Redberry mite (acalitus essigi).—Moderately resistant. Fusarium wilt (fusarium oxysporum).—Resistant.

COMPARISON TO PARENTAL AND REFERENCE BLACKBERRY VARIETIES

(7) ‘DrisBlackThirty’ differs from the proprietary female parent ‘BW337 2 Bulk’ (unpatented) in that ‘DrisBlackThirty’ has larger fruit size and higher yield potential compared to ‘BW337 2 Bulk’. Further, ‘DrisBlackThirty’ is a spineless plant, whereas ‘BW337 2 Bulk’ has spines.

(8) ‘DrisBlackThirty’ differs from the proprietary male parent ‘BS880.1’ (unpatented) in that ‘DrisBlackThirty’ has higher vigor when compared to ‘BS880.1’.

(9) ‘DrisBlackThirty’ differs from the reference variety ‘DrisBlackThirteen’ (U.S. Plant Pat. No. 27,681) in that ‘DrisBlackThirty’ has weak anthocyanin coloration on dormant cane, medium anthocyanin coloration on young shoot (during rapid growth), the fruit shape in longitudinal section is elliptic, and the glaucosity (waxy bloom) on new canes is strong, whereas ‘DrisBlackThirteen’ has medium anthocyanin coloration on dormant cane, weak anthocyanin coloration on young shoot (during rapid growth), the fruit shape in longitudinal section is medium ovate, and the glaucosity (waxy bloom) on new canes is medium.

(10) ‘DrisBlackThirty’ differs from the reference variety ‘DrisBlackTwelve’ (U.S. Plant Pat. No. 27,746) in that ‘DrisBlackThirty’ has weak anthocyanin coloration on dormant cane, angular to grooved dormant cane cross-section, medium intensity of green color of the upper side of the leaf, and the fruit shape in longitudinal section is elliptic, whereas ‘DrisBlackTwelve’ has medium anthocyanin coloration on dormant cane, rounded to angular dormant cane cross-section, dark intensity of green color of the upper side of the leaf, and the fruit shape in longitudinal section is medium ovate.