甘薯优异种质‘浙薯13’及其衍生品种系谱、特征与育种价值分析  

Analysis on the Characteristics,Pedigree and BreedingValue ofSweet Potato Superior Germplasm'Zheshu13'and Its Progenies

作　　者：沈升法[1] 项超 吴列洪[1] 李兵[1] Shen Shengfa;Xiang Chao;Wu Liehong;Li Bing(Institute of Crops and Nuclear Technology Utilization,Zhejiang Academy of Agricultural Sciences,Hangzhou,310021)

机构地区：[1]浙江省农业科学院作物与核技术利用研究所,杭州310021

出　　处：《分子植物育种》2020年第16期5519-5529,共11页Molecular Plant Breeding

基　　金：浙江省农业(粮食)新品种选育重大科技专项(2016C02050-7-7);浙江省重点研发计划项目(2017C02025);浙江省“三农六方”科技协作计划项目(CTZB-F190625LWZ-SNY)共同资助。

摘　　要：以甘薯优异种质‘浙薯13’为亲本,先后衍生出优良新品种27个。本研究对‘浙薯13’及其衍生品种的系谱及主要特征特性进行分析,结果表明‘浙薯13’拥有国内高淀粉核心亲本‘宁薯1号’、地方种质资源‘瑞安红皮红心’和美国引进的高胡萝卜素亲本‘Gem’、优质品种‘南瑞苕’的遗传背景。以‘浙薯13’作母本或父本衍生的品种数分别为20个和7个,均由品种间杂交育成。‘浙薯13’衍生品种的高干物率(干物率>30%)和高淀粉率(淀粉率>20%)比例均超过60%,其中淀粉型、食用型品种和紫薯品种分别占37.0%、22.2%和29.6%。‘浙薯13’衍生品种抗黑斑病、茎线虫病或蔓割病的比例均超过80%,其中抗蔓割病比例达到100%。‘浙薯13’是一个甘薯抗病与品质育种的优良亲本,尤其是在甘薯黑斑病、茎线虫病和蔓割病的抗病育种以及食用紫薯品种选育方面具有较高的利用价值,在长江流域薯区有着广阔的利用前景。‘浙薯13’衍生的多个品种在生产上有较为广泛的应用,发挥了显著地增产增效的作用。因此,注重‘浙薯13’的育种利用以及衍生品种的应用,为今后甘薯新品种遗传改良和应用提供参考。With superior germplasm'Zheshu13'as the parent,27 new superior varieties have been developed.In this study,the pedigree and main characteristics of'Zheshu13'and its derived varieties were analyzed.The results showed that'Zheshu13'has the genetic background of'Ningshu1'(a domestic core parent with high starch content)'Ruianhongpihongxin'(alocalgermplasmresource),'Gem'(aparental material with high carotene content introduced from the United States)and'Nancy hall'(a high quality variety introduced from the United States).The number of varieties derived from'Zheshu13'as the female or male parents were 20 and 7,respectively,all of which were bred by cross-breeding.The rate of high dry matter content(dry matter content>30%)and high starch content(starch content>20%)of'Zheshu13'derived varieties was over 60%,among which starch type,edible type and purple-fle-shed type accounted for 37.0%,22.2%and 29.6%,respectively.The rate of resistance to black rot,stem nematode or Fusarium wilt of'Zheshu13'derived varieties was more than 80%,and the rate of resistance to fusarium wilt was 100%.It is an excellent parent for disease resistance and quality breeding,especially in the disease resistance breeding of sweet potato black rot,stem nematode and fusarium wilt,as well as edible purple-fleshed sweet potato breeding.It has a high breeding value,and has a broad application prospect in the planting region of the Yangtze River.Manyvarieties derived from'Zheshu13'were extensivelypromoted and played a significant role in increasing yield and efficiency.Therefore,we should pay attention to the breeding utilization of'Zheshu13'and the application of its derived varieties,providing a reference for the genetic improvement and application of new sweet potato varieties in the future.

关 键 词：甘薯(Ipomoea batatas(L.)Lam.) 品种 ‘浙薯13’ 育种价值 

分 类 号：S531[农业科学—作物学]