Grapevine plant named ‘SV35-186-427’

Abstract

A new and distinct variety of grapevine plant named ‘SV35-186-427’ particularly characterized by its very sweet, crisp, red berries with flavor similar to spun sugar. Natural cluster size is medium with well-filled, loose clusters. Fruitfulness is high with shoots on spur pruned vines usually producing two flower clusters per shoot. Vine vigor is very high with canes producing 365.5 cm of growth per shoot.

Claims

1. A new and distinct variety of grapevine plant named ‘SV35-186-427’, substantially as illustrated and described herein.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) This new grapevine is illustrated by the accompanying photographs which show fruit clusters, leaves, canes, and tendrils. The colors shown are as true as can be reasonably obtained by conventional photographic procedures. The photographs were taken from the original two year old seedling vine in 2017 and from a one and a half year old vine grafted to ‘Freedom’ rootstock in September of 2019.

(2) FIG. 1 Fruit cluster on the seedling vine.

(3) FIG. 2 Fruit cluster natural at left, from vine treated with exogenous gibberellic acid, shoots, leaves and tendrils, at right.

(4) FIG. 3 Fruit clusters packed for storage testing.

DETAILED BOTANICAL DESCRIPTION

(5) The following detailed description sets forth the distinctive characteristics of grapevine named ‘SV35-186-427’. Descriptions of the new invention apply to vines of ‘SV35-186-427’ grown on ‘Freedom’ (unpatented) rootstock at a density of 1,537 vines per hectare grown near McFarland, Calif. in 2019 and 2020. These vines were observed at one year and two years of age in 2019 and 2020, respectively, in the immediate year following planting and the following year of full production having been planted in 2018. These descriptions are believed to apply generally to the new variety grown under similar circumstances elsewhere. Color references are primarily to The Royal Horticultural Society's Colour Chart, The Royal Horticultural Society, London, United Kingdom (copyright 2001). Descriptors used herein conform to those set forth by the International Board for Plant Genetic Resources Institute Grape Descriptors (Vitis spp.) of 1983 and/or 1997 which were developed in collaboration with the Office Interantional de la Vigne et du Vin (OIV) and the International Union for the Protection of New Varieties of Plants (UPOV) and published in Descriptors for Grapevine (Vitis spp.) (Anonymous, International Plant Genetic Resources Institute, 1997, ISBN 92-9043-352-3). Classification: Family.—Vitaceae. Botanical name.—Vitis interspecific hybrid. Variety name.—‘SV35-186-427’. Plant: Vigor.—High. Vines spur-pruned and shoot thinned to 32 shoots average 365.5 cm of growth per cane. Density of foliage.—Heavy. Productivity.—High when spur pruned, up to 50, 722 kg/hectare. Hardiness.—Hardiness observed to 0° C. Rootstock.—‘Freedom’ (unpatented). Bud burst.—Medium Trunk: Shape.—Broadly elliptical. Straps.—Long, split. Surface texture.—Shaggy. Trunk circumference.—22 cm at 1.0 m of height of 3 year old plants. Inner bark color.—RHS Greyed orange group 166C. Outer bark color.—RHS Grey brown group 199C. Mature leaves: Average blade length.—22.3 cm. Average blade width.—20.7 cm. Size of blade.—Very large. Shape.—Pentagonal. Number of distinct lobes.—3 or 5. Anthocyanin coloration of main veins on the upper side of the blade.—Present on sun exposed leaves at base of main veins, RHS Red Purple group 60B. Mature leaf profile.—Undulating. Blistering (upper surface).—Absent. Leaf blade tip.—In plane of blade. Margins.—Lobed, serrated. Apex.—Broadly acuminate. Bases.—Sagittate. Thickness.—Medium. Undulation of blade between main and lateral veins.—Slight. Shape of teeth.—Broadly conical, both sides convex. Length of teeth.—3-15 mm, averaging 7.7 mm. Ratio length/width of teeth.—3:5. General shape of petiole sinus.—Wide open. Tooth at petiole sinus.—Absent. Petiole sinus limited by veins.—Absent. Depth of upper lateral sinus.—Medium. Shape of upper lateral sinus.—Closed. Prostrate hairs between veins (lower surface).—Absent. Erect hairs between veins (lower surface).—Absent. Prostrate hairs on main veins (lower surface).—Absent. Density of erect hairs on main veins (lower surface).—Sparse except at vein junctions. where erect hairs are numerous. Prostrate hairs on main veins (upper surface).—Absent. Upper surface.—Summer color: Yellow Green group 141A. Surface texture: Smooth. Surface appearance: Dull (not glossy). Goffering of blade: Absent. Pubescence: None. Lower surface.—Summer color: RHS Green group 137A. Anthocyanin coloration of main veins on lower leaf surface: Restricted to bases, Red purple group 60B. Anthocyanin coloration on laterals: Absent. Glossiness: Low. Pubescence: Absence. Surface texture: Rough. Surface appearance: Dull. Petiole.—Length: 10-19 cm, averaging 13.5 cm. Diameter: 4 mm. Length of petiole compared to middle vein: About 1:2. Density of prostrate hairs: Absent. Density of erect hairs: Absent. Color: In shade: RHS Yellow Green group 144B. In sun: RHS Red Purple group 60B. Tendrils: Number.—Bifurcated and trifurcated; forming at alternate nodes above node 4. Length.—15.9 cm. Diameter.—3 mm. Texture.—Smooth. Summer color.—Yellow green group 144A. Autumn color.—Yellow green group 144A developing into Red purple group 60B. Growing tips (young shoot): Pubescence.—Sparse, prostrate. Color.—RHS Yellow Green group 144A. Anthocyanins.—Absent. Shape.—Flattened. Apex.—Fully open. Shoot attitude.—Semi-erect. Green summer shoots: Internode color upper surface.—In sun: RHS Red purple group 60A; In shade: RHS Yellow Green group 144A. Internode color lower surface.—In sun: RHS Yellow Green group 144B; In shade: RHS Yellow Green group 144B. Node color upper surface.—In sun: RHS Red Purple group 60A; In shade: RHS Yellow Green group 144A. Node color lower surface.—RHS Yellow Green group 144A. Erect hairs on internode.—Yes. Woody shoot: Canes.—Shape: Broadly elliptic. Internode length: About 10.8 cm. Width at node: About 10.6 mm. Surface: Smooth. Main color: RHS Greyed orange group 164A. Lenticels: Inconspicuous. Buds.—Shape: Pointed. Cane bud fruitfulness: Shoots from the basal two buds generally bear two flower clusters. Length: 5.2 mm. Width: 4.8 mm. Height: 5.2 mm. Color: RHS Greyed Orange group 175B. Flowers: Flower sex.—Hermaphrodite. Date of full bloom.—May 10, 2021. Fruit: Ripening period.—Late September, Delano, Calif. Date of ripening.—Oct. 5, 2021 at McFarland, Calif. Use.—Fresh market. Keeping quality.—Very good. Shipping quality.—Good. Solids-sugar.—High, about 21 brix at full maturity. Refractometer test.—21 brix. Total acidity.—0.20 g/liter. pH.—4.53. Bunch.—Size: Medium. Length (peduncle excluded): About 22.9 cm. Width: About 13.8 cm. Mass: Natural, without gibberellic acid treatment: 368 g. With gibberellic acid treatment: 330 g. Density: Well filled but loose. Number of berries (without gibberellic acid treatment): 161. Number of berries (with gibberellic acid treatment: 108. Form: Cylindrical. Peduncle.—Length: About 6.6 cm. Lignification: 2 cm of peduncle. Main color: Fresh: RHS Green group 143A. Lignified: RHS Greyed orange group 175A. Berry.—Size: Small. Uniformity of size: Uniform. Weight Natural, without gibberellic acid treatment: 3.1 g. With gibberellic acid treatment: 5.6 g. Shape: Natural, without gibberellic acid treatment: Elliptic. With gibberellic acid treatment: Elliptic to ovate. Presence of seeds: Seedless; most berries develop one or two small, soft rudimentary seeds less than 1.0 mm in length. Cross section: Circular. Dimensions: Length: Natural: 2.0 cm. With gibberellic acid treatment: 2.8 cm. Width: Natural: 1.6 cm. With gibberellic acid treatment: 2.0 cm. Skin color (without bloom): RHS Red purple group 59A. Coloration of flesh: Translucent; lack of color. Juiciness of flesh: Very juicy. Berry firmness: Very crisp. Particular flavor: Similar to spun sugar. Bloom (cuticular wax): Strong. Pedicel length: 8 mm. Berry separation from pedicel: Moderately easy. Skin.—Thickness: Medium. Texture: Crisp. Reticulation: Absent. Roughness: Absent. Tenacity: Tenacious to flesh. Tendency to crack: Resistant. Disease and insect resistance: No particular resistance or susceptibility has been observed. Normal disease control practices can be used.