Blackberry plant named ‘DrisBlackThirtySix’

Abstract

A new and distinct variety of blackberry plant named DrisBlackThirtySix, particularly selected for its plant vigor, the size and firmness of fruit, and high yield potential, is disclosed.

Claims

1. A new and distinct variety of blackberry plant designated DrisBlackThirtySix 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 one to three years old.

(2) FIG. 1 illustrates a section of a cane of variety DrisBlackThirtySix.

(3) FIG. 2 illustrates the upper (left) and lower (right) surface of leaves of variety DrisBlackThirtySix.

(4) FIG. 3 illustrates flowers of varicty DrisBlackThirtySix at various stages of development.

(5) FIG. 4 illustrates fruits of variety DrisBlackThirtySix at various stages of development.

DETAILED BOTANICAL DESCRIPTION

(6) The following descriptions set forth the distinctive characteristics of DrisBlackThirtySix. The data that define these characteristics are based on observations taken in Ciudad Guzmn, Mexico from 2017 to 2023. 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. DrisBlackThirtySix has not been observed under all possible environmental conditions. The botanical description of DrisBlackThirtySix was taken from plants that were one to three 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.DrisBlackThirtySix. Parentage: Female parent.Proprietary blackberry plant BV993.8 (unpatented). Male parent.Proprietary blackberry plant BX759.1 (unpatented). Plant: Propagation.Root cuttings and tissue culture. Growth habit.Semi-upright. Vigor.High. Self-fruitfulness.Self-fruitful. Canes: New cane.Number of new canes: Few. Strength: Strong. Glaucosity (waxy bloom): Weak. Dormant cane.Length: 142 cm. Diameter (in central third): 6.66 cm. Color: RHS 144A (Strong yellow green). Anthocyanin coloration: Weak. Anthocyanin coloration: RHS 46A (Strong red). Number of branches: Many. Predominant distribution of branches: Over whole length. Cross-section: Angular. Spine: Presence of spines: Absent. Young shoots.Number of young shoots: Very many. Anthocyanin coloration (during rapid growth): Weak. Anthocyanin coloration: RHS 46A (Strong red). Overall color: RHS 146B (Moderate yellow green). Number of glandular hairs: Absent or few. Time of young shoot emergence: June to October. Fruiting lateral.Length: Medium. Leaves: Time of leaf bud burst.August to October. Leaf.Predominant number of leaflets: Five (5). Type: Palmate. Relative position of lateral leaflets: Touching. Color of upper side: RHS NN137A (Greyish olive green). Color of lower side: RHS 137D (Moderate yellowish 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: Very deep. Terminal leaflet.Length: 84.6 mm. Width: 51.4 mm. Length/width ratio: 1.64. Shape: Ovate. Apex: Retuse. Base: Obtuse. Margin: Doubly serrate. Lobing: Absent. Shape in cross-section: U-shaped. Undulation of margin: Very strong. Blistering between veins: Strong. Lateral leaflet.Length: 64.4 mm. Width: 34.9 mm. Length/width ratio: 1.84. Shape: Ovate. Base: Obtuse. Margin: Doubly serrate. Rachis (length between terminal leaflet and adjacent lateral leaflets).4.9 mm. Petiole.Length: 23.2 mm. Diameter: 1.6 mm. Stipule.Orientation: Reflexed. Inflorescence: Flower.Diameter: 44.5 mm. Number of flowers observed at 3rd node from tip of lateral: 3.5. Petal.Length: 21.5 mm. Width: 9.8 mm. Length/width ratio: 2.19. Color: RHS NN155C (White). Flower pedicel.Length: 32.5 mm. Diameter: 1.37 mm. Flowering interval on previous year's cane (floricane).February to March. Flowering interval on current year's cane (primocane).August to October. Fruit: Length of mature fruit.34.3 mm. Diameter of mature fruit.25.5 mm. Ratio of length to width.1.34. Fruit weight.8.1 g/fruit. Sweetness/soluble solids (in Brix).10.2. Titratable acidity (% as citric acid).1.51%. Glossiness.Strong. Firmness.Firm. Fruit shape in longitudinal section.Medium ovate. Immature fruit color.RHS 143B (Strong yellow green). Maturing fruit color.RHS 179A (Moderate red). Mature fruit color.RHS 203A (Black). Drupe.Average number of drupelets per fruit: 151. Seed.Weight: 0.0035 g/seed. Fruiting on current year's cane.Present. Harvest interval on previous year's cane (floricane).March to May. Harvest interval on current year's cane (primocane).October to December. Yield.When grown in Mexico, the variety has produced up to 25 short tons of fruit per hectare per season from 6-to 12-month-old plants. Resistance to environmental stress, pests, and diseases: High temperatures.Resistant. Wind.Resistant. High pH.Resistant. High soil salt levels.Moderately resistant. Waterlogging.Moderately susceptible. Two-spotted spider mite (Tetranychus urticae).Moderately resistant. Strawberry mite (Tarsonemus pallidus).Susceptible. Strawberry-blossom weevil (Anthonomus rubi).Resistant. Aphids (Aphis spp.).Moderately resistant. Lygus bug (Lygus hesperus).Resistant. Botrytis fruit rot (Botrytis cinerea).Resistant. Powdery mildew (Podosphaera macularis).Resistant. Verticillium wilt (Verticillium spp.).Resistant. Leaf scorch (Xylella fastidiosa).Moderately resistant. Leaf blight (Pseudomonas syringae).Resistant. Fusarium wilt (Fusarium oxysporum).Resistant.

COMPARISON TO PARENTAL AND REFERENCE BLACKBERRY VARIETIES

(7) DrisBlackThirtySix differs from the female parent proprietary blackberry plant BV993.8 (unpatented) in that DrisBlackThirtySix has larger fruit size and higher yield potential than BV993.8.

(8) DrisBlackThirtySix differs from the male parent proprietary blackberry plant BX759.1 (unpatented) in that DrisBlackThirtySix fruit has a titratable acidity value (% as citric acid) of 1.51% and a sweetness/soluble solids value (in Brix) of 10.2, whereas BX759.1 fruit has a titratable acidity value (% as citric acid) of 1.81% and a sweetness/soluble solids value (in Brix) of 9.6. DrisBlackThirtySix fruit thus has lower acidity and higher sweetness as compared to BX759.1, which results in a different flavor profile as compared to BX759.1.

(9) DrisBlackThirtySix differs from the reference variety DrisBlackThirteen (U.S. Plant Pat. No. 27,681) in that DrisBlackThirtySix has weak anthocyanin coloration on dormant cane, very strong undulation of margin on terminal leaflets, white petal color, and strong fruit glossiness, whereas DrisBlackThirteen has medium anthocyanin coloration on dormant cane, absent or very weak to weak undulation of margin on terminal leaflets, the petal color is white with violet tinge, and weak to medium fruit glossiness.

(10) DrisBlackThirtySix differs from the reference variety DrisBlackTwentySix (U.S. Plant Pat. No. 34,320) in that DrisBlackThirtySix has weak anthocyanin coloration on dormant cane, spines absent on dormant cane, very strong undulation of margin on terminal leaflets, and medium ovate shape of fruit in longitudinal section, whereas DrisBlackTwentySix has absent or very weak anthocyanin coloration on dormant cane, spines present on dormant cane, absent or very weak undulation of margin on terminal leaflets, and long conical shape of fruit in longitudinal section.