Seedless grapevine named ‘ARDFORTYTWO’

Abstract

A new distinct variety of grapevine named ‘ARDFORTYTWO’ abundantly forms attractive crispy seedless berries with a red skin coloration, dense medium clusters which display a natural sweet flavor, the fruit commonly is ready for harvesting during June in San Joaquin Valley of Central California, U.S.A, and displays good eating qualities as a table grape as the fruit firmness renders the fruit well amenable for handling, shipping, and storage.

Claims

1. A new and distinct grapevine, botanically known as Vitis vinifera, identified as ‘ARDFORTYTWO’, substantially as shown and described herein.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) The accompanying photographic illustration shows typical six-year-old specimens of the new variety, vegetatively propagated, in color as nearly true as it is reasonably possible to make in a color illustration of this character. Colors in the photograph may differ from the color values cited in the detailed botanical description below, which accurately describes the colors of the new Grapevine.

(2) The drawing shows leaves, stems and grapes of ‘ARDFORTYTWO’.

DETAILED BOTANICAL DESCRIPTION

(3) The chart used in the identification of colors is The R.H.S. Colour Chart of The ROYAL HORTICULTURAL SOCIETY (3.sup.rd Edition). The description is based on the observation of plants growing on ‘Thompson Seedless’ rootstock outdoors near San Joaquin Valley of Central California, U.S.A.

(4) TABLE-US-00002 VINE CHARACTERISTICS: vigor Vigorous upright shoots productive capacity Bearing at a natural, average capacity. Spur pruning. trunk Strong and developed. Diameter is 2.7 inches, measured 9.5 inches above ground. Rough with a fibrous, shaggy exterior. Light maple brown coloring (greyed orange 177C) Date of bud burst in Bakersfield Calif.: March 1.sup.st.

(5) TABLE-US-00003 YOUNG SHOOT CHARACTERISTICS: Openness of tip wide open Density of prostrate hairs on tip sparse Anthocyanin coloration of prostrate none hairs on tip Density of erect hairs on tip absent or very sparse

(6) TABLE-US-00004 YOUNG LEAF CHARACTERISTICS: Color of upper side of blade yellow green 144A Color of lower side of blade yellow green 146A Density of erect hairs between main absent or very sparse veins on upper side of blade Density of erect hairs between main absent or very sparse veins on lower side of blade Density of prostrate hairs on main absent or very sparse veins on upper side of blade Density of prostrate hairs on main absent or very sparse veins on lower side of blade

(7) TABLE-US-00005 SHOOT CHARACTERISTICS: Attitude (before tying) semi-erect Color of dorsal side of internodes yellow green 144A Color of ventral side of internodes yellow green 144B Color of dorsal side of nodes yellow green 145A Color of ventral side of nodes yellow green 145B Density of erect hairs on internodes absent or very sparse Density of prostrag hairs on absent or very sparse internodes Length of tendrils 3.1 inches Diameter of tendrils 0.06 inches Color of tendrils yellow green 144A Number of tendrils at bloom 4 Positioning of first flowering and The first bunch is in the 3rd node fruiting node Inflorescence number per flowering 2 shoot

(8) TABLE-US-00006 FLOWER CHARACTERISTICS: Reproductive organs fully developed stamens and fully developed gynoecium Flower length 0.21 inches Flower diameter 0.1 inches Pistil length 0.13 inches Pistil color yellow green 144A Pollen Amount rich Pollen color yellow 11C Stamen color yellow green 145C Stamen length 0.12 inches Number of stamen 5 First bloom in Bakersfield, Calif.: April 28.sup.th. Date of full bloom in Bakersfield, Calif.: May 4.sup.th.

(9) TABLE-US-00007 MATURE LEAF CHARACTERISTICS: Size of blade 4.5 × 4 inches Shape of blade wedge-shaped Base descriptors pentagonal Leaf margin doubly serrate Leaf apex acute Blistering of upper side of blade absent or very sparse Depth of upper lateral sinuses medium Number of lobes five (Only varieties with lobed leaves) open Arrangement of lobes of upper lateral sinuses Arrangement of lobes of petiole very wide open sinus Length of teeth 0.18 inches Ratio length/width of teeth small Shape of teeth both sides straight Density of prostrate hairs between absent or very sparse main veins on lower side of blade Density of erect hairs on main veins absent or very sparse on lower side of blade Density of erect hairs between the absent or very sparse main veins on upper side of blade Density of prostrate hairs on main absent or very sparse veins on upper side of blade Length of petiole compared to length much shorter of middle vein Top side color green 137B Bottom side color yellow green 146B Texture of upper side of blade smooth Texture of lower side of blade rough Vein color on upper blade yellow green 146D Vein color on lower blade yellow green 145D Venation pattern for upper blade netlike venation Venation patten for lower blade netlike venation Petiole length 2.3 inches Petiole diameter 0.02 inches Petiole color red 53A Petiole texture smooth Date of beginning of berry ripening in Bakersfield Calif.: May 28.sup.th.

(10) TABLE-US-00008 BUNCH CHARACTERISTICS: Size (peduncle excluded) medium Density of berries on bunch dense Bunch length 6.5 inches Bunch diameter 7 inches Length of peduncle of primary bunch 4.3 inches Diameter of peduncle of primary 0.19 inches bunch Peduncle of primary bunch color yellow green 145B Peduncle texture smooth Bunches per vine 72 Average bunch weight 0.98 lbs

(11) TABLE-US-00009 BERRY CHARACTERISTICS: Size large Length 1.1 inches Weight 0.3 oz Diameter 0.9 inches Shape obtuse ovoid Color of skin (without bloom) red 46A Flesh color yellow green 145D Brix 24 Titrabable acidity percentage 0.32% Juice 4.22 pH Ease of detachment from pedicel difficult Thickness of skin thin Anthocyanin coloration of flesh none Firmness of flesh moderately firm Particular flavor natural sweet Formation of seeds rudimentary Berries per bunch 64

(12) TABLE-US-00010 PEDICEL CHARACTERISTICS: Length 0.35 inches Diameter 0.09 inches Color yellow green 144B Pedicel texture rough

(13) TABLE-US-00011 WOODY SHOOT CHARACTERISTICS: Woody shoot texture rough Woody shoot color greyed orange 165B Woody shoot length 216 inches Diameter 0.4 inches Internode length 5.18 inches Market use of observed plants: Fresh market.

AGE AND GROWING CONDITIONS

(14) Six years growing under Y system in South Joaquin Valley during hot, dry summers.

SHIPPING CHARACTERISTICS

(15) Fruit was in cold storage. Stored in poly bags inside Styrofoam boxes with sulfur pads. After 60 Days: rachises were 60% green; 0% berry shattering; no berry wrinkling or cracks were apparent.

DNA PROFILE

(16) To further the characterize the new variety DNA was extracted from plant samples and a DNA profile was obtained at California Seed & Plant Lab, California USA using base pairs for 10 standard microsatellite DNA markers. The data is presented hereafter.

(17) TABLE-US-00012 TABLE 2 DNA profile for ‘ARDFORTYTWO’ Microsatellite DNA Allele Sizes Marker in Base Pairs M 1 226 238 M 2 247 249 M 3 185 194 M 4 210 212 M 5 251 273 M 6 135 151 M 7 187 189 M 8 251 257 M 9 212 214 M 10 237 237

(18) The ‘ARDFORTYTWO’ variety has not been observed under all possible environmental conditions to date. Accordingly, it is possible that the phenotypic expression may vary somewhat with changes in light intensity and duration, cultural practices, and other environmental conditions.

(19) Additional information relating to plant and fruit disease and pest resistance or susceptibility has not been observed to date. Specification of the plant hardiness zone and the heat/cold resistance has not been observed to date.