|Botanical Name:||Vitis vinifera|
Sheehan Genetics LLC
2500S Fowler Avenue
United States of America
Timothy P. Sheehan, Sheehan Genetics LLC, Fresno, United States of America
|Agent in Canada:||
Vineland Research and Innovations Centre Inc.
4890 Victoria Avenue North
P.O. Box 4000
Vineland Station, Ontario
Varieties used for comparison: 'Sheegene 4', 'Sheegene 9' and 'Thompson Seedless'
Summary: The berry of 'Sheegene 2' has a broad ellipsoid shape and a medium size whereas that of 'Thompson Seedless' has a globose shape and is small. The berries of 'Sheegene 2' start to ripen early whereas those of 'Sheegene 9' start to ripen mid-season and those of 'Sheegene 4' ripen late in the season.
YOUNG SHOOT TIP: fully opened, sparse prostrate hairs, absent or very weak anthocyanin colouration of prostrate hairs, absent or very sparse erect hairs
SHOOT: dorsal side of internodes and nodes are green and red, ventral side of internodes is green, ventral side of nodes is green and red, absent or very sparse erect hairs on internodes, horizontal attitude (before tying)
WOODY SHOOTS: orange brown, absent or very sparse erect hairs on internodes, very early time of bud burst
YOUNG LEAF: upper side green with anthocyanin spots, absent or very sparse prostrate and erect hairs between main veins on lower side of blade
MATURE LEAF: medium size blade, circular shape, five lobes, weak blistering on upper side, slightly open lobes of petiole sinus, short teeth, medium length to width ratio of teeth, both sides of teeth are convex, absent or very low proportion of main veins on upper side with anthocyanin colouration, petiole is moderately longer than length of middle vein
UPPER LATERAL SINUSES: shallow, slightly overlapped lobes
LOWER SIDE: absent to very sparse prostrate hairs between main veins, sparse erect hairs on main veins
FLOWER: hermaphrodite type
FRUIT CLUSTER: large, lax density (some pedicels visible), medium length peduncle of primary bunch
BERRY: begins ripening early in season, medium size, typically broad ellipsoid, difficult to detach from pedicel, muscat flavour, seed formation rudimentary
BERRY SKIN: yellow, medium thickness
BERRY FLESH: very firm, absent or very weak anthocyanin colouration
Origin & Breeding History: 'Sheegene 2' originated from a controlled hybridization between the variety 'Red Globe', as the female parent, and the variety 'Princess', as the male parent. In the late spring of 2000, the original cross was conducted in Fowler, California, USA. The initial seedling of 'Sheegene 2' was selected based on its high fertility, production of seedless grapes, bunch size and muscat flavour. The variety was asexually propagated in the dormant season of 2003, grafted onto Harmony grape rootstock, and planted in a Vitis vinifera variety block near Fowler, California.
Tests & Trials: The detailed description of 'Sheegene 2' is based on the UPOV report of Technical Examination, application number 20094857, purchased from the Oficina Española de Variedades Vegetales. The trials were conducted at the Centro de Ensayos de Evaluación de Variedades de Murcia, in Spain from 2010 to 2013.
- Date modified: