甘薯新品种湘薯98的选育及栽培技术

湘薯98是湖南省作物研究所2008年用徐薯22集团杂交获得杂交种子,再逐级试验选育而成。经2014~2015年国家甘薯长江薯区区域试验,平均鲜薯产量31 390.5 kg/hm~2,薯干产量10 621.5 kg/hm~2,淀粉产量7 240.5 kg/hm~2;在2015年长江薯区进行生产示范,平均鲜薯产量34 554 kg/hm~2,薯干产量11 028 kg/hm~2,淀粉产量7 390.5 kg/hm~2,均比对照徐薯22增产显著。薯块烘干率33.91%,淀粉率23.14%,中抗黑斑病,高抗茎线虫病,抗根腐病,综合评价抗病性较好,耐旱、贮藏性好、品质佳、低镉吸附,增产潜力大。湘薯98是湖南省第一个通过国家鉴定的淀粉型甘薯新品种。栽培时应注意精选种薯、培育无病壮苗,适时早插、合理密植,及时管理,适时收获。

The Breeding and Cultural Technique of New Varieties Sweet Potato’ Xiangshu 98

Xiangshu 98 was developed by Hunan Crop Research Institute in 2008, which was bred by sexual hybridization through seedling gradual test and using Xushu 22 group hybrid. The average yields of fresh tuber, dried sweet potato and starch were 31 390.5, 10 621.5 and 7 240.5 kg/hm2 respectively in the regional test from Yangtze River district in 2014-2015. The average yields of fresh tuber, dried sweet potato and starch were 34 554, 11 028 and 7 390.5 kg/hm2 respectively in production demonstration at different areas, which all signiifcantly increased compared with Xushu 22. Xiangshu 98 have many good characteristics, such as drought tolerance, good storage, good quality, low cadmium adsorption, high resistance to black spot, stem nematode and root rot, dried rate 33.91%, starch rate 23.14%. It is the ifrst starch type sweet potato variety which is identiifed by the state in Hunan Province. Cultivator should pay attention to select seed, disease free seedling cultivation, transplanting early, reasonable density, timely management, timely harvest.