Blackberry plant named ‘DrisBlackThirtyTwo’

Abstract

A new and distinct variety of blackberry plant named DrisBlackThirtyTwo, particularly selected for its good plant health and the size, firmness, and flavor of fruit, is disclosed.

Claims

1. A new and distinct variety of blackberry plant designated DrisBlackThirtyTwo 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 DrisBlackThirtyTwo.

(3) FIG. 2 illustrates a section of a cane of variety DrisBlackThirtyTwo.

(4) FIG. 3 illustrates flowers of variety DrisBlackThirtyTwo at various stages of development.

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

DETAILED BOTANICAL DESCRIPTION

(6) The following descriptions set forth the distinctive characteristics of DrisBlackThirtyTwo. The data that define these characteristics are based on observations taken in Ciudad Guzm?n, Jalisco, Mexico from 2013 to 2019. 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. DrisBlackThirtyTwo has not been observed under all possible environmental conditions. The botanical description of DrisBlackThirtyTwo 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.DrisBlackThirtyTwo. Parentage: Female parent.DrisBlackFive (U.S. Plant Pat. No. 24,701). Male parent.2011 BQ Bulk (unpatented). Plant: Propagation.Root cuttings and tissue culture. Growth habit.Semi-upright. Height.208 cm. Width.50 cm. Height/width ratio.4.16. Vigor.High. Self-fruitfulness.Self-fruitful. Canes: Internodal distance.13 cm. New cane.Strength: Strong. Glaucosity (waxy bloom): Weak. Dormant cane.Anthocyanin coloration: Weak. Overall coloration: RHS 148B (Moderate yellow green). Predominant distribution of branches: Over whole length. Cross-section: Rounded. Spine: Presence of spines: Present. Length: 10 mm. Width (at base): 10 mm. Number of spines on dormant cane: Many. Color: RHS 139D (Moderate yellow green). Density of spines on central third of cane: Dense. Texture: Heavy. Attitude of spine apex in relation to cane: Outwards. Fruiting lateral.Fruiting lateral length (4.sup.th lateral from tip): 33 cm. Number of fruits per fruiting lateral: 16. Young shoots.Length: 54 cm. Diameter: 3 cm. Anthocyanin coloration (during rapid growth): Strong. Overall color: RHS 144A (Strong yellow green). Number of glandular hairs: Absent or few. Time of young shoot emergence: Mid-January. Leaves: Time of leaf bud burst.Mid-February. Leaf.Predominant number of leaflets: 5. Type: Palmate. Relative position of lateral leaflets: Touching. Arrangement: Alternate. 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: Convex (margins rolled backwards). Glossiness of upper side: Medium. Leaflet.Type of incision of margin: Bi-serrate. Depth of margin incisions: Medium. Terminal leaflet.Length: 8.4 cm. Width: 5.6 cm. Length/width ratio: 1.5. Shape: Oval. Base: Obtuse. Margin: Doubly serrate. Lobing: Absent. Shape in cross-section: U-shaped. Undulation of margin: Strong. Blistering between veins: Weak. Lateral leaflet (single leaflet in basal pair).Length: 16.1 cm. Width: 5.5 cm. Length/width ratio: 2.9. Shape: Ovate. Apex: Acuminate. Base: Obtuse. Margin: Doubly serrate. Rachis (length between terminal leaflet and adjacent lateral leaflets).2.3 cm. Petiole.Length: 5.9 cm. Diameter: 3 mm. Color of upper surface: RHS 139C (Moderate yellow green). Color of lower surface: RHS 137D (Greyish olive 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: 32.75 mm. Number of flowers observed at 3 node from tip of lateral: 14. Fragrance: Faint. Petal.Length: 19.23 mm. Width: 12.71 mm. Length/width ratio: 1.51. Number of petals per flower: 5. Color: RHS 155C (Greenish white). Shape: Oval. Apex: Complex. Base: Cuneate. Margin: Erose. Sepal.Length: 10 mm. Width: 7 mm. Color: RHS 138D (Light yellow green). Flower pedicel.Length: 40.65 mm. Diameter: 1.13 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. Flowering interval on previous year's cane (floricane).Mid-February. Fruit: Length of mature fruit.32.82 mm. Diameter of mature fruit.23.62 mm. Ratio of length to width.1.38. Floricane fruit weight.10.9 g/fruit. Sweetness/soluble solids (in ? brix).15.4. Titratable acidity (% as citric acid).1.3%. Glossiness.Medium. Firmness.Firm. Fruit shape in longitudinal section.Narrow ovate. Fruit color.RHS 203A (Black). Drupe.Length of single drupe: 5 mm. Diameter of single drupe: 5 mm. Average number of drupes per fruit: 105. Seed.Diameter: 2 mm. Weight: 0.00474834 g/seed. Color: RHS 158C (Yellowish white). Abundance: Medium. Fruiting on current year's cane.Absent. Harvest interval on previous year's cane (floricane).Late March to mid-April. Yield.Up to 14 short tons (tn) of fruit per hectare per season from 24- to 36-month-old plants when grown in Los Reyes, Michoac?n, Mexico. Resistance to pests and diseases: Redberry mite (acalitus essigi).Moderately susceptible. Fusarium wilt (fusarium oxysportum).Resistant. Verticillium wilt (Verticillium spp.).Resistant.

COMPARISON TO PARENTAL AND REFERENCE BLACKBERRY VARIETIES

(7) DrisBlackThirtyTwo differs from the female parent DrisBlackFive (U.S. Plant Pat. No. 24,701) in that DrisBlackThirtyTwo has weak dormant cane anthocyanin coloration, palmate leaf type, the fruit shape in longitudinal section is narrow ovate, and fruits on floricanes (previous year's cane) only, whereas DrisBlackFive has strong dormant cane anthocyanin coloration, odd-pinnate leaf type, the fruit shape in longitudinal section is long conical, and fruits on both floricanes (previous year's cane) and primocanes (current year's cane).

(8) DrisBlackThirtyTwo differs from the proprietary male parent 2011 BQ Bulk (unpatented) in that DrisBlackThirtyTwo has a larger fruit size and higher yield potential as compared to the male parent 2011 BQ Bulk.

(9) DrisBlackThirtyTwo differs from the reference variety DrisBlackTwenty (U.S. Plant Pat. No. 31,826) in that DrisBlackThirtyTwo has strong anthocyanin coloration on young shoots, spines present on dormant cane, weak blistering between veins on terminal leaflets, and the fruit width is broad, whereas DrisBlackTwenty has absent or very weak anthocyanin coloration on young shoots, spines absent on dormant cane, medium blistering between veins on terminal leaflets, and the fruit width is very broad.

(10) DrisBlackThirtyTwo differs from the reference variety DrisBlackNineteen (U.S. Plant Pat. No. 31,825) in that DrisBlackThirtyTwo has many spines on dormant cane, U-shaped cross-section of terminal leaflets, the attitude of the spine apex in relation to the cane is outwards, and the anthocyanin coloration of the young shoot during rapid growth is strong, whereas DrisBlackNineteen has few spines on dormant cane, V-shaped cross-section of terminal leaflets, the attitude of the spine apex in relation to the cane is downwards, and the anthocyanin coloration of the young shoot during rapid growth is very weak.