甘薯高淀粉工业用新品种“苏薯2号”引种试验研究

介绍了对甘薯高淀粉工业用新品种“苏薯2号”主要经济性状的引种鉴定结果.在1986—1988年重庆市区域试验中,“苏署2号”鲜薯平均亩产1658.7kg,薯干平均亩产551.1kg,淀粉平均亩产360.3kg,分别比对照品种“徐薯18”增产2.63%、8.10%和9.55%;鲜藤叶平均亩产1883.6kg,比“徐薯18”减产13.72%.“苏薯2号”薯块的干物质、淀粉、粗蛋白、可溶性糖、Vc、氨基酸含量均高于“徐薯18”,抗旱性和结薯习性较好.目前,“苏薯2号”已在重庆市一些地区推广.

THE STUDY OF THE .INTRODUCED-VARIETY OF SUSHU No. 2, A HIGH-STARCH NEWLY-EVOLVED VARIETY OF SWEET POTATO FOR USE WITH INDUSTRY

It gives an introduction of the result for appraising the chief economic character of Sushu No. 2, A high starch newly-evolved varie'ty of sweet potato (Ipomoea batatas Lam. ) for use with industry was breeded by Jiangsu Provincial Academy of Agricultural Sciences. The average value of the fresh tuberous root weight of Sushu No. 2 was 1658.7 kg/mu Obtained from the Regional Test of Chongqing City in 1986- 1988. Furthermore, Its mean yield in dry matter was 551.1 kg/mu, the starch 360.3 kg/mu, the fresh vine 1883.6 kg/mu. The average value yield in the fresh tuberous root, the dry matter and the starch of Sushu No. 2 was 2.63%, 8.10% and 9.55% higher than those of Xushu 18 respectively. But, its mean yield of fresh vine was 13.12% Lower than that of Xushu 18. The content of dry matter, s'tarch, protein, soluble sugar, Vitamin C and amino acid in tuberous root of Sushu No. 2 was higher than those of Xushu 18. Sushu No. 2 was the better one in drought resistance and the grow-characteristic of tuberous root. At present, It is being popularized in part area of Chongqing City.