Grapevine named ‘SV28-100-202’

Abstract

A new and distinct variety of grapevine plant named ‘SV28-100-202’ particularly characterized by its ellipsoidal shaped, seedless red berries which are very large, sweet and have crisp texture. Productivity is very high with shoots producing one or two clusters on spur pruned vines.

Claims

1. A new and distinct variety of grapevine plant named ‘SV28-100-202’, 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 first photo was taken in 2016 of a cluster of fruit and a shoot from a plant about 6 years-old, grown in a field near McFarland, Calif. The second photograph of a four year old plant was taken in a field near McFarland, Calif. in 2014.

(2) FIG. 1 Natural fruit cluster with shoots, leaves, tendrils and shoot tips.

(3) FIG. 2 Fruit clusters on vine sprayed with gibberellic acid and trunk girdled.

DETAILED BOTANICAL DESCRIPTION

(4) The following detailed description sets forth the distinctive characteristics of ‘SV28-100-202’. Descriptions of the new invention apply to vines of ‘SV28-100-202’ grown on ‘Freedom’ rootstock at a density of 1,537 vines per hectare grown near McFarland, Calif. in 2017. These vines were in their sixth year of full production, having been planted in 2011. These descriptions are believed to apply generally to the new variety grown under similar circumstances elsewhere. References to color correspond to The Royal Horticultural Society's Colour Chart, The Royal Horticultural Society, London, United Kingdom (1966, 1986, 1995, 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 vinifera. Variety name.—‘SV28-100-202’. Plant: Vigor.—Medium; vines spur-pruned and shoot thinned to 32 shoots. Density of foliage.—Moderate. Productivity.—Very productive when spur pruned, up to 32,000 kg/hectare. Hardiness.—Hardiness observed to 0° C. Rootstock.—‘Freedom’ (unpatented). Trunk: Shape.—Broadly elliptical. Straps.—Long, split. Surface texture.—Shaggy. Trunk circumference.—24.6 cm at 1.0 m of height. Inner bark color.—RHS Greyed orange group 174C. Outer bark color.—RHS Brown group N200B. Mature leaves: Average blade length.—15.2 cm. Average blade width.—18.6 cm. Size of blade.—Large. Shape.—Pentagonal. Anthocyanin coloration of main veins on the upper side of the blade.—Absent. Mature leaf profile.—Undulating, cupped upwards and flattened within plane of blade. Blistering (upper surface).—Absent. Leaf blade tip.—In plane of blade. Margins.—Lobed, serrated, undulating. Lobes (average).—Five. Apex.—Narrowly acute. Bases.—Sagittate. Thickness.—Medium. Undulation of blade between main and lateral veins.—Slight. Shape of teeth.—Broadly conical, both sides convex. Length of teeth.—3-9 mm. Ratio length/width of teeth.—About 1:1. General shape of petiole sinus.—Half open. Tooth at petiole sinus.—Absent. Petiole sinus limited by veins.—Absent. 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).—Moderate, limited to junctions of main veins. Prostrate hairs on main veins (upper surface).—Absent. Upper surface.—Summer color: RHS Green group 137A. Surface texture: Smooth Surface appearance: Dull. Goffering of blade: Absent. Lower surface.—Summer color: RHS Green group 137C. Anthocyanin coloration of main veins on lower leaf surface: Absent. Anthocyanin coloration on laterals: No. Glossiness: Low. Pubescence: Absent. Surface texture: Rough. Surface appearance: Dull. Petiole.—Length: 13.5 cm. Length of petiole compared to middle vein: Slightly shorter. Density of prostrate hairs: Absent. Density of erect hairs: Absent. Shape of base of petiole sinus: Half open. Color: In shade: RHS Yellow green group 144C. In sun: RHS Yellow green group 144C with streaks of red purple group 59A. Buds.—Time of leaf bud burst: Early. Tendrils: Length.—Long, averaging 24.2 cm. Color.—In shade: RHS Yellow green group 144A. Growing tips (young shoot): Presence of pubescence on young shoot meristematic tip.—Sparse, prostrate. Color.—RHS Yellow Green Group 144B. Presence of anthocyanins at shoot tip meristem.—Absent. Shape.—Flattened. Apex.—Fully open. Shoot attitude.—Semi-erect. Young leaves: Color of young leaves, upper surface.—RHS Yellow green group 144B. Flowers: Flower sex.—Perfect. Position of first flowering nodes.—Usually on node 4. Number of inflorescences per shoot.—One or two on nodes 4 and 5. Date of full bloom: May 6th. Flower cluster length (peduncle included).—31 cm. Unopened flower length.—3 mm. Flower pedicel length.—3 mm. Calyptra color.—Green group 143A. Ovary length.—2.5 mm. Ovary color.—Green group 141B. Anther length.—1 mm. Anther color.—Yellow group 8B. Filament length.—2 mm. Filament color (absence of pigment).—Translucent. Fruit: Ripening period.—Mid-season. Date of ripening.—August 10th at McFarland, Calif. Use.—Fresh market. Keeping quality.—Good. Shipping quality.—Good. Date of first harvest.—August 10th. Solids-sugar.—23 brix at full maturity. Refractometer test.—20.0 brix. Bunch.—Size: Medium. Length (peduncle excluded): 35.2 cm. Width: 18.7 cm. Weight: Natural, without gibberellic acid treatment: 1187 g. Density: Loose. Bunch density of natural clusters with no gibberellic acid treatment: Very loose. Number of berries: 173. Form: Cylindrical with 4 or 5 major branches from central rachis. Peduncle.—Length: 7.2 cm. Lignification: Medium. Color: RHS Yellow green group 144A. Berry.—Size: Large. Uniformity of size: Variable, about 3 g to 7 g. Weight: Natural, without gibberellic acid treatment: About 6.7 g. Shape: Ellipsoidal. Presence of seeds: Seedless; most berries develop one or two tiny ovule traces about 1 mm in length. Cross section: Circular. Dimensions, natural berries not treated with gibberellic acid: Longitudinal axis: About 2.7 cm. Horizontal axis: About 2.0 cm. Skin color (without bloom): RHS Red Purple Group 59A. Berry flesh color: Translucent, absence of anthocycnin. Juiciness of flesh: Very juicy. Berry firmness: Very firm. Particular flavor: Neutral, typical Vitis vinifera table grape. Bloom (cuticular wax): Heavy. Pedicel length: About 1.3 cm. Berry separation from pedicel: Moderately easy. Skin.—Thickness: Medium. Texture: Tender. Reticulation: Absent. Roughness: Absent. Tenacity: Tenacious to flesh. Tendency to crack.—Resistant. Disease and insect resistance: Moderately susceptible to powdery mildew which may be controlled with standard fungicides in California.