摘要
【目的】选育高淀粉多抗甘薯新品种,为长江流域薯区甘薯淀粉产业发展提供良种支持。【方法】以优质高产品种苏薯16号为父本、高抗高淀粉率品种浙紫薯1号为母本,通过有性杂交,采取干物质含量和产量低世代选择,抗性和品质高世代鉴定的技术路线选育甘薯新品种,并参加国家甘薯品种长江流域区域试验和多点生产力大区比较试验。【结果】选育的苏薯29属淀粉型甘薯品种,薯形呈长纺锤形,薯皮红色,薯肉淡黄色,结薯集中整齐,单株结薯数平均4.6个,大中薯率84.8%,耐盐、耐贮性较好,熟食品质优;在国家甘薯品种长江流域区域试验中,平均薯干产量9964.4 kg/ha,比徐薯22(CK)增产11.95%;平均淀粉产量6786.3 kg/ha,比CK极显著增产15.58%,平均薯块干物质含量和淀粉率分别为33.75%和23.00%,分别比CK高3.40%和2.95%(绝对值);高抗茎线虫病,抗根腐病和蔓割病,不抗黑斑病。2016年5月通过国家甘薯品种鉴定委员会鉴定,定名为苏薯29,鉴定编号为国品鉴甘薯2016015。【结论】苏薯29丰产稳产性好,淀粉产量高,适合在长江流域薯区及周边地区推广种植,也可在江苏滩涂盐碱地种植。
【Objective】New sweet potato variety with high starch content was selected and bred to provide variety supports for the development of sweet potato starch industry in regions of the Yangtze River Basin.【Method】High-quality variety Sushu 16 was used as male parent and Zhezishu 1 with high starch content and high resistance was the female parent.Through sexual hybridization,the new sweet potato cultivar was selected and bred by low generation selection of dry matter content and field,and advanced generation identification of resistance and quality. And the new cultivar participated in the national sweet potato cultivar comparative test in Yangtze River Basin and tests in muti-sites of region.【Result】Sushu29 bred in the study belonged to starch-type sweet potato cultivar. Its storage root was long fusiform with red skin and light-yellow flesh. The tuber formation was concentrated and in order. The average number of storage root per plant was4.6 and the percentage of large and medium sweet potato was 84.8%. Besides,Sushu 29 had fine salt tolerance and storability,and good quality after being cooked. The national sweet potato cultivar comparative test in Yangtze River Basin showed that the average dry yield was 9964.4 kg/ha,which increased by 11.95% compared with that of Xushu 22（CK）.The average starch yield was 6786.3 kg/ha,which increased significantly by 15.58% compared with that of CK. The average dry matter content and starch rate of root were 33.75% and 23.00% respectively,with 3.40% and 2.95%（absolute value）higher than that of CK. The cultivar was highly resistant to stem nematode,root rot and fusarium wilt,but was not resistant to black spot. In May 2016,this cultivar was identified by the National Sweet Potato Cultivar Identification Committee and was named as Sushu 29,with the identification number of 2016015.【Conclusion】The new cultivar Sushu 29 has high yield stability and high starch yield. It is suitable for application and cultivation in the Yangtze River Basin and surrounding areas. In addition,this cultivar has a certain tolerance to salinity and alkalinity,and can be cultivated in the coastal saline-alkali land of Jiangsu.
作者
贾赵东
马佩勇
边小峰
禹阳
郭小丁
谢一芝
JIA Zhao-dong;MAPei-yong;BIAN Xiao-feng;YU Yang;GUO Xiao-ding;XIE Yi-zhi(Institute of Food Crops,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)
出处
《南方农业学报》
CAS
CSCD
北大核心
2018年第5期848-856,共9页
Journal of Southern Agriculture
基金
现代农业产业技术体系建设项目(CARS-10-C3)
江苏省农业科技自主创新基金项目[CX(15)1005]
关键词
甘薯
苏薯29
淀粉
优质
品种选育
长江流域
sweet potato；Sushu 29；starch；high-quality；breeding of cultivar；Yangtze River Basin
