The difference of ripening time: the ripening time of summer black grapes is around July; The ripening time of summer black grapes is around August. The difference in taste: the sweetness of summer black grapes is very high; Kyoho grapes are a little sweet and sour. The difference of pulp: the pulp of summer black grape tastes a little hard, but there is no stone; The pulp of Kyoho grape is soft and juicy, with stone inside.

Kyoho grape is tetraploid and normally has seeds. Summer black grape is triploid, so it is impossible to develop seeds under normal circumstances. Therefore, the difference between Kyoho grape and Xiahei grape is that Kyoho grape has seeds and Xiahei grape has no seeds. If the summer black grapes you eat have seeds, you may have eaten "fake summer black grapes".

The origin of Xiahei grape is Japan, and it is a European-American hybrid grape bred by crossing Kyoho grape and seedless white grape. Although the two varieties are different, the fruits are purple-black, oval and large. In terms of appearance, there is not much difference between the two.

Summer black grape not only inherits the "handsomeness" of Kyoho grape, but also surpasses Kyoho grape in some aspects with higher sugar content. As the saying goes, "the back waves of the Yangtze River push the front waves, and the front waves die on the beach", as a dark horse in the grape industry, Xiahei grape has gradually grown into one of the domestic grapes since 2004.