Where exactly is the place of origin of the Summer Black grape?

The place of origin of the Summer Black grape is Japan. It is a descendant of the Kyoho grape, an early-ripening European-American variety, and the grapes can be eaten as early as July. The characteristics of the Summer Black grape are early ripening, seedlessness, high sugar and low acid, a rich aroma, fine and crisp flesh, and medium firmness; among European-American grapes it is considered relatively firm.

The Summer Black grape is a European-American hybrid, a triploid variety, bred by the Yamanashi Prefecture Fruit Tree Experiment Station in Japan from a cross of Kyoho X diploid Thompson Seedless. It obtained variety registration in August 1997 and was introduced into our country in 1998.

The Summer Black grape plant has strong and vigorous growth, with a bud burst rate of 85%. The branching rate is 95%, and each fruiting cane bears an average of 1.5 inflorescences. Shoots sprouting from latent buds have strong fruiting ability and high yield potential. In the Zhangjiagang area of Jiangsu, it buds in late March, flowers in mid-May, and the fruit ripens in late July. The number of days from flowering to fruit ripening is about 110 days, making it an early-ripening seedless variety. It has strong disease resistance, and after the fruit ripens it does not crack or drop.