紫心甘薯新品种龙紫9号的选育

A New Purple-fleshed Sweet Potato Cultivar—‘Longzi No.9’

龙紫9号是以龙薯10号为母本,以凌紫、越南紫薯、龙紫4号、宁紫1号等紫心甘薯品种为父本集团,经自然杂交选育而成的紫心甘薯新品种。薯块纺锤形,深紫皮紫肉,单株结薯数4~5个;平均大中薯率86.2%,商品薯率87.4%,花青素含量为253 mg·kg^(-1)(FW),熟食食味优;每667 m^(2)鲜薯产量2400 kg左右,薯干产量600 kg左右。适宜在福建、江西、广东、广西、四川、贵州等非薯瘟病、蔓割重病区作夏、秋薯种植。

‘Longzi No.9’is a new variety of purple sweet potato,bred by natural hybridization with‘Longzi No.10’as female parent,‘Lingzi’‘Vietnam purple sweet potato’‘Longzi No.4’and‘Ningzi No.1’etc.purple sweet potato varieties as paternal group.Its tuber is of spindle shape with deep purple peel and purple flesh.The single plant can bear 4-5 tubers.The average proportion of large potato is 86.2%,that of commercial potato is 87.4%.The anthocyanin content is 253 mg·kg^(-1)(FW).The average fresh root yield is 36 t·hm^(-2).The dried root yield is 9 t·hm^(-2).It is suitable for summer and autumn potato planting in Fujian,Jiangxi,Guangdong,Guangxi,Sichuan,Guizhou etc.areas not affected by potato blast and cranberry disease.