Seedless table grapevine named ‘Itumtwelve’

Abstract

A new distinct variety of Vitis vinifera (Table grape) named ‘Itumtwelve’ forms distinctive seedless fruit with a black berry skin and a narrow ellipsoid berry shape. Fruit has a neutral flavor and a very firm flesh that together with a medium thickness of skin makes it crunchy at the first bite. Being a mid-season variety, the fruit commonly is ready for harvesting from August to mid-October in Murcia, Spain, and displays good eating qualities as a table grape. The fruit meatiness and firmness renders the fruit amenable for handling, shipping, and storage.

Claims

1. A new and distinct cultivar of Vitis grapevine named ‘Itumtwelve’ as herein illustrated and described.

Description

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

(1) The accompanying photographic illustrations show typical samples of vegetative growth and fruit on a 9 year old specimen of the new variety, in color as nearly true as it is reasonably possible to make in a color illustration of this character. Plants were grown in Murcia, Spain. 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) FIG. 1 illustrates a fruit cluster of ‘Itumtwelve’.

(3) FIG. 2 shows a close-up view of individual berries of ‘Itumtwelve’.

(4) FIG. 3 illustrates in close up perspective typical foliage of the new variety.

(5) FIG. 4 illustrates a new shoot of ‘Itumtwelve’.

DETAILED BOTANICAL DESCRIPTION

(6) In the following description, color references are made to The Royal Horticultural Society Colour Chart 2015 except where general terms of ordinary dictionary significance are used. Some descriptors, when useful have been incorporated from UPOV Grape Descriptor Guidelines. The description is based on the observation of plants growing on ‘1103 Paulsen’ (not patented) rootstock in clay stony soil conditions in the fields near Blanca, Murcia, Spain. The age of plant described is 9 years old, with an average height of 200 cm, a high canopy density, a 300 cm plant spread, a one-year growth rate to reach two meters high and 20 to 30 days to initiate roots at approx. 20° C. At observation location temperature ranged between 15° C. to 35° C. during the day, and between 5° C. to 20° C. during the night. Botanical classification: Vitis vinifera ‘Itumtwelve’.

CANES

(7) Characteristics of mature canes: Diameter.—1.2 to 1.6 cm. Length.—70 to 80 cm. Color.—Near RHS Greyed-Orange 164C. Cross section shape.—Circle. Strength.—Weak. Texture.—Non-pubescent, rough. Lenticels: Diameter.—Less than 0.5 mm. Density.—Few to-moderate. Color.—Near RHS Greyed-Orange 164C. Internode length: 8-12 cm. Pigmentation at internode, dorsal.—Near RHS Greyed-Orange 164C. Pigmentation at internode, ventral.—Near RHS Greyed-Orange 164C. Tendril pattern on show: 0,0,0,0,1 or 0,0,0,0,0,1. Tendrils forked.—Yes. Tendril texture.—Glabrous. Tendril length.—6 to 12 cm. Bud: Bud width.—0.8 to 1 cm. Bud length.—0.4 cm. Bud shape.—Deltoid. Bud color.—Near RHS Greyed-Yellow 161D, flushed 162D. Young shoot: Openness of tip.—Open. Anthocyanin.—Not present in Shoot pigmentation. Texture.—Smooth. Diameter.—0.8 to 1.1 cm. Longitudinal length.—1.0 to 4.0 m; average 1.2 m. Color.—Near RHS Greyed-Orange 164D, streaked 165D. Cross section.—Circular. Strength.—Moderate. Attitude.—Semi-erect. Bark texture.—Shaggy. Bark color.—Near RHS Greyed-Red 179A streaked 180B.

FOLIAGE

(8) Leaf: Arrangement.—Alternate. Quantity.—Approximately 15 per cane. Average length.—22 cm. Average width.—18 cm. Overall shape of blade.—Orbicular. Apex.—Acute. Base.—Cordate, overall rounded. Margin.—Dentate, teeth approximately 5 to 19 mm in length. Ratio of length to width about 1:1. Both sides of teeth straight or slightly convex one side. Texture of top surface.—Smooth. Texture of bottom surface.—Smooth. Pubescence.—None. Aspect.—Slightly undulate. Lobes.—3 to 5 slightly overlapping lobes. Sinuses: Shape of petiolar sinus.—High widened. Shape of base petiolar sinus.—High widened. Depth of petiolar sinus.—5 cm. Width of petiolar sinus.—2.6 cm. Shape of upper sinuses.—High widened. Color: Immature foliage upper side.—Near RHS Yellow-Green 154D streaked 150D. Immature foliage under side.—Near RHS Yellow-Green 154D streaked 150D. Mature foliage upper side.—Near RHS Green 137A. Mature foliage under side.—Near RHS Yellow-Green 144A. Venation: Type: pinnate. Venation color upper side.—Near RHS Yellow-Green 154C, anthocyanin coloration not observed. Venation color under side.—Near RHS Yellow-Green 154C, anthocyanin coloration not observed. Petiole: Length.—16 cm. Diameter.—0.3 cm. Color.—Near RHS Yellow-Green 144A with weak Anthocyanin presence near base, Red 36C. Texture.—Rough.

FLOWER

(9) Flowering period begins around May 1 to 7 in Murcia, Spain. Inflorescence when in bud: Length.—9 cm. Diameter.—4 cm. Bud color.—Near RHS Green 140B. Bud shape.—Conical. Bud size.—About 1 to 2 mm by 1 to 2 mm. Individual flower: Size of entire flower (to end of stamens).—7 mm. Calyx shape.—Funnel. Calyx size.—15 mm. Calyx color.—Near RHS Green 140B. Calyx apex.—Rounded. Calyx base.—Rounded. Calyx texture.—Glabrous all surfaces. Diameter.—12 mm. Quantity per flowering stem.—5. Days lasting on plant.—7 days. Petals: Quantity.—5. Arrangement.—Symmetrical rotate. Length.—0.17 cm. Width.—<0.1 cm. Shape.—Obovate. Apex.—Ovate. Base.—Ovate. Texture.—Upper and lower surfaces glabrous and soft. Color.—At opening upper surface: Near RHS Green 140B. At opening lower surface: Near RHS Green 140B. Fully opened upper Surface: Near RHS Green 140B. Peduncles: Fruit peduncle length.—55 mm. Fruit peduncle width.—6 mm. Angle.—About 70° to the lateral branch. Fruit peduncle strength.—Firm. Fruit peduncle texture.—Soft. Color.—Near RHS Green 142D. Pedicels: Length.—4 mm. Diameter.—0.5 mm. Angle.—About 70° to center of flower cluster. Strength.—Medium. Texture.—Softly pubescent. Color.—Near RHS Green 141C. Fragrance: Absent.

REPRODUCTIVE ORGANS

(10) Number of Stamens.—5. Anthers.—Shape: oblong. Length: Approximately 1 mm. Color: Near Yellow 9C mixed with 10A. Pollen.—Color: Near Yellow 7D mixed with 8A. Quantity.—Abundant. Pistil Quantity.—1. Length; 2.5 mm. Style.—Length.—0.5 mm. Color: Near RHS Green 143C. Stigma.—Shape: Round. Color: Near RHS Yellow-Green 144D. Ovary Color.—Near RHS Yellow-Green 144D.

FRUIT

(11) Cluster: Average length.—20 cm. Average diameter.—18 cm. Average weigh 550 grams. Fertility index.—number of clusters per sprouted buds: 1. Fruit: Time of berry ripening.—Mid-season variety, typically bears fruit for harvesting from August until mid-October in the region of Murcia, Spain. Average length.—2.6 cm. Average diameter.—1.9 cm. Shape.—Narrow ellipsoid. Cross-section.—Circular. Color of berry skin.—Near RHS Black 202A. Color of berry flesh.—Translucent, near White 155B. Brix at harvest.—18. Ease of detachment from pedicle.—Difficult, well hooked and difficult detachment. Thickness of skin.—Medium. Firmness of flesh.—Very crunchy and moderately firm. Particular flavor.—Neutral to semi-acid. Fruit peduncle length.—7.5 mm. Fruit peduncle width.—5 mm. Fruit peduncle strength.—Moderate. Fruit peduncle color.—Near Green 143B and 143C. Formation of seeds.—Not present.

OTHER CHARACTERISTICS

(12) Disease and pest resistance: Not observed to be susceptible nor resistant to normal diseases and pests of Vitis vinifera. Temperature tolerance: Observed growing between 6° C. to 42° C. Drought tolerance: Observed to tolerate water shortages during the dry Summer months of Murcia, Spain without detriment.