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1985和1987年,我所从国内外引进20余个优良鲜食大粒葡萄品种,经4年种植观察比较,从中筛选出玫瑰露-4X、露萨里奥和龙宝3个综合性状优良的品种,1990年农一师科委验收通过。 玫瑰露-4X(Delawara-4X)是日本玫瑰露品种的芽变品种,1985年自日本山梨县植原葡萄研究所引入阿拉尔。本品种在阿拉尔4月15—18日开始萌芽,从萌芽至果实成熟117天;植株生长势较强,嫩梢无茸毛,浅紫红色,幼叶有光泽略带紫红色,无茸毛,成龄叶片心形,绿色,新梢第一卷须着生在第5节;始花期5月29日至6月4日,两性花;果实8月上旬成熟,果穗中大,平均穗重
In 1985 and 1987, we imported more than 20 fine fresh grape varieties from home and abroad. After 4-year planting observation and comparison, we selected 3 varieties with excellent comprehensive performance, Rose Dew -4X, Lucasario and Longbao In 1990, a division of science and technology Commission approved the adoption. Delawara-4X is a variety of Japanese rose varieties of budding varieties, since 1985, Japan’s Yamanashi Prefecture Institute of Grapevine introduced Alar. The variety began to germinate in Alar from April 15 to April 18, and germinated from germination till the fruit matured for 117 days. The plant grew vigorously with no hair on young shoots, light purple, young leaves with a purplish red color and no hair, Leaf blade heart-shaped, green, shoot the first volume to be born in Section 5; flowering May 29 to June 4, flowers; fruit mature in early August, ear large, average ear weight