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马铃薯品种延薯7号是2002年以延薯4号作母本、以早大白作父本,有性杂交获得实生籽,经过各世代鉴定筛选而育成。该品种2008~2009年在吉林省两年区域试验中667 m2平均产量1 904 kg,比对照东农303增产9.8%;鲜薯维生素C含量18.0 mg/100 g,淀粉含量11.0%,干物质含量19.0%,还原糖含量0.40%,粗蛋白含量1.93%,中感马铃薯晚疫病。2010年1月通过吉林省农作物品种审定委员会审定。
Potato variety Yanshu 7 is 2002 to Yamu 4 as the female parent, as early as white male, sexual hybrid seedlings obtained after identification of each generation and breeding. The average output of 667 m2 in this two-year regional experiment in Jilin Province from 2008 to 2009 was 1 904 kg, which was 9.8% higher than that of Dongnong 303. The content of vitamin C in fresh potato was 18.0 mg / 100 g, the starch content was 11.0% and the dry matter content 19.0%, reducing sugar content of 0.40%, crude protein content of 1.93%, a sense of potato late blight. January 2010 through the Jilin Province Crop Variety Approval Committee validation.