Abstract:Yuniang Ziyu is a medium and early maturing wine grape variety developed by artificial cross breeding of Merlot (Vitis vinifera cv. Merlot) and LN-33(Vitis vinifera cv. LN-33) as parents. The panicle is conical, occasionally with secondary panicle, the fruit grains are compact, and the average panicle weight is 252.70 g. The fruit was medium in size and balanced, with an average weight of 1.53g. The fruit is nearly round, purplish black, evenly colored, medium thick fruit powder, medium thick peel, meat sac, juice, 1 ~ 2 per fruit grain. The juice is colorless and the pressed grape juice is ruby red. Soluble solid content of ripe fruit was 21.6%, soluble sugar content was 17.46%, total acid content was 0.78%, Vc content was 9.63 mg·100g -1 , tannincontent was 4680 mg·kg -1 . The fruit is sweet and sour, and the flesh has the aroma of plum fruit. Cultivated in Zhengzhou, the berries began to color in early July, ripened in late July, and matured fully in early August. The fruit development period lasted for 82 days. High germination rate, robust growth.The alcohol content, dry extract content, titrable acid, pH value and sulfur dioxide residue of wine samples were all within the national standard range of dry red wine brewing. The dry red wine is good in flavor and color. The variety has strong cold tolerance, drought tolerance, disease resistance and good yield. It is cultivated in Henan grape ecologically suitable area and other similar grape ecologically suitable area.
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