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高花青苷高淀粉甘薯品种‘徐紫薯3号’是以高花青苷品种绫紫为母本,‘徐薯18’为父本,通过有性杂交,多年多点综合鉴定选育而成。该品种2011年通过国家甘薯新品种鉴定,鉴定编号为国品鉴甘薯2011019。通过对‘徐紫薯3号’的形态特征、品质性状、抗病性和生产力等研究,结果表明‘徐紫薯3号’全生育期长势平稳,薯形长纺锤形,结薯习性集中整齐,薯块紫皮紫肉,商品性好;薯块烘干率和淀粉率分别为35.44%和24.46%,极显著超过其双亲‘绫紫’和‘徐薯18’;鲜薯花青苷含量高达1105.4μg/g,花青苷产量达23 kg/hm2以上,比‘绫紫’提高26.98%;抗茎线虫病和黑斑病,极显著优于其双亲;4年25点次鉴定,鲜薯和薯干平均产量分别为23.87 t/hm2和8.36 kg/hm2;与其双亲相比,鲜薯产量比双亲平均值提高3.42%,薯干产量和淀粉产量均极显著超过其高亲‘徐薯18’,分别提高12.22%和22.60%;是一个适合花青苷提取和紫薯淀粉加工的优异品种,同时可以作为甘薯品种选育的花青苷源、黑斑病抗源和高淀粉源加以利用。
The high-glycyrrhizin high-starch sweet potato variety ’Xuzushu 3’ is a high-cyanine variety Aya-purple as the female parent and ’Xushu 18’ as the male parent. Through sexual crossbreeding and multi-year comprehensive identification and breeding to make. The species in 2011 through the national identification of new varieties of sweet potato, identification number of sweet potato 2011019. Through the study on the morphological characteristics, quality traits, disease resistance and productivity of ’Xuzi Shu 3’, the results showed that ’Xu Zi Shu 3’ grew steadily during the whole growth period, and the tuberous long spindle and tuber habits were neat and tidy , Sweet potato purple purple meat, good product; tuber drying rate and starch rate were 35.44% and 24.46%, extremely significantly more than their parents ’purple silk’ and ’Xushu 18’; fresh potato anthocyanin content Up to 1105.4μg / g, the yield of anthocyanin was above 23 kg / hm2, which was 26.98% higher than that of ’Ziya’; the resistance to Stem nematode and black spot was significantly better than that of its parents; The average yield of potato and potato was 23.87 t / hm2 and 8.36 kg / hm2, respectively. Compared with their parents, the average yield of fresh potato was 3.42% higher than that of their parents, and the yield of dried potato and starch were extremely significantly higher than that of their high pro- 18’and increased by 12.22% and 22.60% respectively. It is an excellent anthocyanin extraction and purple potato starch processing, at the same time, it can be used as the anthocyanin source for breeding sweet potato varieties, and resistant to black spot and high starch source use.