USPP35291P2

USPP35291P2 - Seedless grapevine plant named ‘ARD8’

Info

Publication number: USPP35291P2
Application number: US17/803,915
Authority: US
Inventors: Shachar Karniel
Original assignee: Agricultural Research and Development LLC
Current assignee: GRAPA GLOBAL LLC
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-08-01
Anticipated expiration: 2043-01-18

Abstract

A new distinct variety of grapevine named ‘ARD8’ abundantly forms attractive crispy seedless berries with a red skin coloration, lax and large clusters which display a naturally sweet flavor with the fruit commonly ready for harvesting during August in San Joaquin Valley of Central California, U.S.A, and displays good eating qualities as a table grape, with firmness that renders the fruit well amenable for handling, shipping and storage.

Description

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

Variety denomination: The new Grapevine has a varietal denomination Seedless Grapevine Plant Named ‘ARD8’.

BACKGROUND OF THE INVENTION

A breeding program was initiated during the late 1990's near Bakersfield in the San Joaquin Valley of Central California. In 2011, 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 HO-65, which is a mid-late red seedless grape with a sweet flavor (non-patented in the United States). The male parent (i.e. the pollen parent) of the new variety was 60-85+1, a meaty and crispy red seedless variety (non-patented in the United States).

TABLE 1

‘ARD8’ compared with parents & closely related variety:

				‘Flame’
	‘ARD8’	HO-65	60-85+1	(non-patented)

Harvest time	Late	Mid-late	Mid-late	Very early
Berry shape	Broad	Globose	Broad	Globose
	ellipsoid		Ellipsoid
Density of	Lax	Lax	Medium	Tight
bunch

The parentage of the new variety can be summarized as follows:
HO-65 X 60-85+1

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.

In 2012 the plant was transplanted to Bakersfield in the San Joaquin Valley of Central California.

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

- (a) Forms attractive crispy seedless berries with a red skin coloration in lax and large clusters which display a naturally sweet flavor;
- (b) Commonly bears fruit during the month of August in the San Joaquin Valley of Central California, U.S.A.;
- (c) Bears fruit that is firm and is well amenable for storage, handling, and shipping; and
- (d) Produces 42 bunches per vine, and an average of about 1-2 bunches per shoot, at a total of 68 lbs. of fruit per vine.

The new variety during observation to date has displayed no visible disease, and has displayed an ability to well resist cold, drought and heat; but is 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.

The new variety of the present invention has been found to undergo asexual propagation beginning in 2013 near Bakersfield in the San Joaquin Valley of Central California, U.S.A. by bud grafting on mature ‘Thompson Seedless’ rootstock (non-patented in the United States). 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

The new variety ‘ARD8’ is a red seedless table grape with a high production, e.g., about 42 bunches per vine, and an average of about 1-2 bunches per shoot.

Asexual reproduction by micro propagation of the new variety as performed near Bakersfield, Calif., 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

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.

The drawing shows leaves, stems and grapes of ‘ARD8’

DETAILED BOTANICAL DESCRIPTION

The chart used in the identification of colors is The R.H.S. Colour Chart of The ROYAL HORTICULTURAL SOCIETY (3^rdEdition). 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.


VINE CHARACTERISTICS:

	Vigor	Vigorous upright shoots
	Productive capacity	Bearing at a natural, average capacity.
		Spur pruning.
	Trunk	Strong and developed.
		Diameter is 2.3 inches at 12.3 inches
		above ground.
		Rough with a fibrous, shaggy exterior.
		Light maple brown coloring greyed
		orange 166B

Date of bud burst in Bakersfield Calif.: March 2^nd


YOUNG SHOOT CHARACTERISTICS:

	Openness of tip	Wide open
	Density of prostrate hairs on tip	Absent or very sparse
	Anthocyanin coloration of prostrate	None
	hairs on tip
	Density of erect hairs on tip	Absent or very sparse


YOUNG LEAF CHARACTERISTICS:

	Color of upper side of blade	Yellow green 152A
	Color of lower side of blade	Yellow green 152A
	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


SHOOT CHARACTERISTICS:

	Attitude (before tying)	Semi-erect
	Color of dorsal side of internodes	Yellow green 144B
	Color of ventral side of internodes	Yellow green 144A
	Color of dorsal side of nodes	Yellow green 144B
	Color of ventral side of nodes	Yellow green 144A
	Density of erect hairs on internodes	Absent or very sparse
	Density of prostrate hairs on	Absent or very sparse
	internodes
	Length of tendrils	6.7 inches
	Diameter of tendrils	0.1 inches
	Color of tendrils	Yellow green 145A
	Number of tendrils at bloom	3
	Positioning of first flowering and	The first bunch is in
	fruiting node	the 3^rdnode
	Inflorescence number per flowering	1-2
	shoot


FLOWER CHARACTERISTICS:

	Reproductive organs	Fully developed stamens and fully
		developed gynoecium
	Flower length	0.3 inches
	Flower diameter	0.25 inches
	Pistil length	0.11 inches
	Pistil color	Green 143A
	Pollen Amount	Poor
	Pollen color	Yellow 11A
	Stamen color	Yellow green 144A
	Stamen length	0.15 inches
	Number of stamen	6

First bloom in Bakersfield, Calif.: April 30^th

Date of full bloom in Bakersfield, Calif.: May 5^th


	MATURE LEAF CHARACTERISTICS:

	Size of blade	7.5 inches × 7.5 inches
	Shape of blade	Pentagonal
	Base descriptors	Pentagonal
	Leaf margin	Doubly serrate
	Leaf apex	Acute
	Blistering of upper side of blade	Weak
	Depth of upper lateral sinuses	Absent or very shallow
	Number of lobes	Five
	(Only varieties with lobed leaves)	Closed
	Arrangement of lobes of upper
	lateral sinuses
	Arrangement of lobes of petiole	Wide open
	sinus
	Length of teeth	0.65 inches
	Ratio length/width of teeth	Medium
	Shape of teeth	Both sides convex
	Density of prostrate hairs between	Absent or very sparse
	main veins on lower side of blade
	Density of erect hairs on main veins	Medium
	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	Moderately shorter
	of middle vein
	Top side color	Green 137A
	Bottom side color	Yellow green 147B
	Texture of upper side of blade	Rough
	Texture of lower side of blade	Rough
	Vein color on upper blade	Yellow green 145B
	Vein color on lower blade	Yellow green 145D
	Venation pattern for upper blade	Netlike venation
	Venation patten for lower blade	Netlike venation
	Petiole length	6 inches
	Petiole diameter	0.14 inches
	Petiole color	Yellow green 145A
	Petiole texture	Smooth

Date of beginning of berry ripening in Bakersfield Calif.: July 28^th


BUNCH CHARACTERISTICS:

	Size (peduncle excluded)	Large
	Density of berries on bunch	Lax
	Bunch length	9 inches
	Bunch diameter	7 inches
	Length of peduncle of primary bunch	1.1 inches
	Diameter of peduncle of primary	0.14 inches
	bunch
	Peduncle of primary bunch color	Yellow green 144C
	Peduncle texture	Smooth
	Bunches per vine	42
	Average bunch weight	1.62 lbs


BERRY CHARACTERISTICS:

	Size	Large
	Length	1.2 inches
	Weight	0.39 oz
	Diameter	0.98 inches
	Shape	Broad ellipsoid
	Color of skin (without bloom)	Red 53A
	Flesh color	Greyed green 192C
	Brix	23.1
	Titrabable acidity percentage	0.49%
	Juice	3.86 pH
	Ease of detachment from pedicel	Moderately easy
	Thickness of skin	Thin
	Anthocyanin coloration of flesh	None
	Firmness of flesh	Moderately firm
	Particular flavor	Naturally sweet
	Formation of seeds	None
	Berries per bunch	79


PEDICEL CHARACTERISTICS:

	Length	0.42 inches
	Diameter	0.09 inches
	Color	Yellow green 145C
	Pedicel texture	Smooth


WOODY SHOOT CHARACTERISTICS:

	Woody shoot texture	Rough
	Woody shoot color	Greyed orange 177B
	Woody shoot length	164 inches
	Diameter	0.43 inches
	Internode length	4.48 inches

Market use of observed plants: Fresh market

AGE AND GROWING CONDITIONS

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

SHIPPING CHARACTERISTICS

Fruit was in cold storage. Stored in poly bags inside Styrofoam boxes with sulfur pads. After 60 Days: rachises were 90% green; 20% berry shattering; no berry wrinkling or cracks were apparent.

DNA PROFILE

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

TABLE 2

DNA profile for ‘ARDS’

Microsatellite DNA	Allele Sizes
Marker	in Base Pairs

M1	228	236
M2	249	253
M3	181	194
M4	212	216
M5	251	273
M6	151	151
M7	189	189
M8	247	247
M9	214	214
M10	247	247

The ‘ARD8’ 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.

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

What is claimed is:

1. A new and distinct grapevine plant, botanically known as Vitis vinifera, identified as ‘ARD8’, substantially as shown and described herein.