Seedless grapevine plant named ‘ARD48’

Abstract

A new distinct variety of grapevine named ‘ARD48’ abundantly forms attractive crunchy and juicy seedless berries with a yellow-green skin coloration, lax large clusters which display a naturally sweet flavor, the fruit is commonly ready for harvesting during July in San Joaquin Valley of Central California, U.S.A., and displays good eating qualities as a table grape, the fruit firmness renders the fruit well amenable for handling, shipping, and storage.

Description

[0001] Classification: The present invention relates to a new Vitis vinifera Grapevine.

[0002] Variety denomination: The new Grapevine has a varietal denomination ‘ARD48’.BACKGROUND OF THE INVENTION

[0003] A breeding program was initiated during the late 90's near Bakersfield in San Joaquin Valley of Central California. In 2016, during this breeding program, a new variety of Vitis vinifera was created by deliberate cross breeding of two parent plants by emasculation of the pollen bearing organ of the female and introducing pollen from another male origin. The female parent of the new variety was 35−33+6 which is a white, sweet and crunchy variety, with very good berry attachment (not patented). The male parent (i.e. the pollen parent) of the new variety was 1−9+20, a white, crisp and meaty variety with dense bunches (not patented).

[0004] TABLE 1‘ARD48’ compared with parents & closely related variety:Thompson‘ARD48’35 − 33 + 61 − 9 + 20SeedlessBerryVery goodVery goodVery goodMediumattachmentDensity ofLaxLaxDenseVery tightbunch(dense)Capstem / Medium / Thin / longThick / Medium / brushmediummediumshort

[0005] The parentage of the new variety can be summarized as follows:35−33+6 X 1−9+20

[0006] An artificial pollination was created, and the result was an embryo which possessed unique genetic qualities. The rudiments resulting from the above pollination were embryo rescued.

[0007] In 2017 the plant was transplanted to Bakersfield in San Joaquin Valley of Central California.

[0008] It was found that the new grapevine of the present invention possesses the following combination of characteristics:

[0009] (a) Forms attractive crunchy and juicy seedless berries with a yellow-green skin coloration; in lax large clusters which display a naturally sweet flavor,

[0010] (b) Commonly bears fruit during the month of July in the San Joaquin Valley of Central California, U.S.A., and

[0011] (c) Bears fruit that is firm and is well amenable for storage, handling, and shipping.

[0012] (d) Produces 29 bunches per vine, and an average of about 2 bunches per shoot, at a total of 54 lbs. fruit per vine.

[0013] The new variety during observation to date has displayed no visible disease, and has displayed an ability to well resist cold, drought, heat; but sensitive to direct exposure to sun and wind. The fruit of the new variety has been found to display excellent handling and shipping qualities combined with desirable dessert eating qualities.

[0014] The new variety of the present invention has been found to undergo asexual propagation beginning in 2018 near Bakersfield in the San Joaquin Valley of Central California, U.S.A. by bud grafting on mature Thompson Seedless rootstock (not patented). Such asexual propagation has been conducted thereafter in successive years to date and has shown that the characteristics of the new variety are strictly transmissible from one generation to another. Accordingly, the new variety undergoes asexual propagation in a true to type manner.SUMMARY OF THE INVENTION

[0015] The new variety ‘ARD48’ is a yellow-green seedless table grape with high production, e.g., about 29 bunches per vine, and an average of about 2 bunches per shoot.

[0016] Asexual reproduction by micro propagation of the new variety as performed near Bakersfield, California, U.S.A., shows that the forgoing and other distinguishing characteristics come true to form and are established and transmitted through succeeding propagations.BRIEF DESCRIPTION OF THE DRAWING

[0017] The accompanying photographic illustration shows typical five-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.

[0018] The drawing shows leaves, stems, tendrils and grapes of ‘ARD48’.DETAILED BOTANICAL DESCRIPTION

[0019] The chart used in the identification of colors is The R.H.S. Colour Chart of The ROYAL HORTICULTURAL SOCIETY (3rd 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.

[0020] TABLE 2VINE CHARACTERISTICS:VigorVigorous upright shootsProductive capacityBearing at a natural, averagecapacity. Spur pruning.TrunkStrong and developed.Diameter is 2.6 inches, at 5.9 inchesabove ground.Rough with a fibrous, shaggy exterior.Light maple brown coloring greyedorange 177 C

[0021] Date of bud burst in Bakersfield California: Feb 28th.

[0022] TABLE 3YOUNG SHOOT CHARACTERISTICS:Openness of tipWide openDensity of prostrate hairs on tipSparseAnthocyanin coloration of prostrateNonehairs on tipDensity of erect hairs on tipSparse

[0023] TABLE 4YOUNG LEAF CHARACTERISTICS:Color of upper side of bladeYellow green 144 AColor of lower side of bladeYellow green 145 ADensity of erect hairs between mainMediumveins on upper side of bladeDensity of erect hairs between mainSparseveins on lower side of bladeDensity of prostrate hairs on mainMediumveins on upper side of bladeDensity of prostrate hairs on mainAbsent or very sparseveins on lower side of blade

[0024] TABLE 5SHOOT CHARACTERISTICS:Attitude (before tying)Semi-erectColor of dorsal side of internodesYellow green 144 AColor of ventral side of internodesYellow green 144 AColor of dorsal side of nodesYellow green 144 AColor of ventral side of nodesYellow green 144 BDensity of erect hairs on internodesAbsent or very sparseDensity of prostrate hairs onAbsent or very sparseinternodesLength of tendrils 5.5 inchesDiameter of tendrils0.08 inchesColor of tendrilsYellow green 144 ANumber of tendrils at bloom4Positioning of first flowering andThe first bunch is in the fruiting node3rd nodeInflorescence number per flowering2shoot

[0025] TABLE 6FLOWER CHARACTERISTICS:Reproductive organsFully developed stamens and fully developed gynoeciumFlower length0.2inchesFlower diameter0.1inchesPistil length0.12inchesPistil colorYellow green 144 APollen AmountAbundantPollen colorYellow 10 AStamen colorYellow green 145 DStamen length0.14inchesNumber of stamen5

[0026] First bloom in Bakersfield, California: April 23rd.

[0027] Date of full bloom in Bakersfield, California: May 1st.

[0028] TABLE 7MATURE LEAF CHARACTERISTICS:Size of blade7.5 inches × 9.5 inchesShape of bladeWedge-shapedBase descriptorsPentagonalLeaf marginDoubly serrateLeaf apexAcuteBlistering of upper side of bladeAbsent or very sparseDepth of upper lateral sinusesMediumNumber of lobesFive(Only varieties with lobed leaves)ClosedArrangement of lobes of upperlateral sinusesArrangement of lobes of petioleHalf opensinusLength of teeth 0.4 inchesRatio length / width of teethMediumShape of teethBoth sides straightDensity of prostrate hairs betweenAbsent or very sparsemain veins on lower side of bladeDensity of erect hairs on main veinsAbsent or very sparseon lower side of bladeDensity of erect hairs between theAbsent or very sparsemain veins on upper side of bladeDensity of prostrate hairs on mainAbsent or very sparseveins on upper side of bladeLength of petiole compared to lengthModerately shorterof middle veinTop side colorYellow green 146 ABottom side colorYellow green 147 BTexture of upper side of bladeSmoothTexture of lower side of bladeRoughVein color on upper bladeYellow green 144 AAnthocyanin coloration of main veinsNoneon upper side of bladeVein color on lower bladeYellow green 145 CVenation pattern for upper bladeNetlikeVenation patten for lower bladeNetlikePetiole length 4.7 inchesPetiole diameter0.14 inchesPetiole colorYellow green 145 APetiole textureSmooth

[0029] Date of beginning of berry ripening in Bakersfield California: June 4th.

[0030] TABLE 8BUNCH CHARACTERISTICS:Size (peduncle excluded)LargeDensity of berries on bunchLaxBunch length9.5 inchesBunch diameter6.5 inchesLength of peduncle of primary bunch1.1 inchesDiameter of peduncle of primary0.2 inchesbunchPeduncle of primary bunch colorYellow green 144 APeduncle textureSmoothBunches per vine29Average bunch weight1.87 (lbs)

[0031] TABLE 9BERRY CHARACTERISTICS:SizeLargeLength1.63inchesWeight0.39ozDiameter0.85inchesShapeCylindricalColor of skin (without bloom)Yellow green 151 AFlesh colorYellow green 145 DBrix18Titratable acidity percentage0.28%Juice4.06pHEase of detachment from pedicelDifficultThickness of skinMediumAnthocyanin coloration of fleshNoneFirmness of fleshVery firmParticular flavorNatural sweetFormation of seedsRudimentaryBerries per bunch95Juiciness of the berry fleshJuicy

[0032] TABLE 10PEDICEL CHARACTERISTICS:Length 0.6 inchesDiameter0.14 inchesColorYellow green 144 BPedicel textureRough

[0033] TABLE 11WOODY SHOOT CHARACTERISTICS:Woody shoot textureRoughWoody shoot colorGreyed orange 175 AWoody shoot length129inchesDiameter0.5inchesInternode length3.2inches

[0034] Market use of observed plants: Fresh market.

[0035] Age and growing conditions: Six years growing under Y system in South Joaquin Valley (hot, dry summers).

[0036] Shipping characteristics: (E.g. number of days fruit has been stored under specific conditions): Fruit was in cold storage. Stored in poly bags inside polystyrene boxes with sulfur pads. After 30 Days rachises were 40% green; 2% berry shattering; no berry wrinkling or cracks were apparent.

[0037] DNA profile: To further the characterize the new variety DNA was extracted from plant samples and a DNA profile was obtained at California, USA using base pairs for 10 standard microsatellite DNA markers. The data is presented hereafter.

[0038] TABLE 12DNA profile for ‘ARD48’Microsatellite DNAMarkerAllele Sizes in Base PairsM 1226236M 2247249M 3179194M 4210214M 5251273M 6133135M 7193201M 8255257M 9212212M 10237237

[0039] The ‘ARD48’ 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.

[0040] 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.

Claims

1. A new and distinct grapevine plant named ‘ARD48’, substantially as shown and described herein.

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