1996-2015年江苏省淮南麦区育成品种的遗传多样性分析  

Genetic diversity analysis of winter wheat cultivars developed in Huainan region of Jiangsu province from 1996 to 2015

作　　者：吕国锋[1] 范金平[1] 高德荣[1] 张勇[1] 陆成彬[1] 张晓祥[1] 王慧[1] 刘业宇 吴素兰[1] 张伯桥[1] LYU Guo-feng;FAN Jin-ping;GAO De-rong;ZHANG Yong;LU Cheng-bin;ZHANG Xiao-xiang;WANG Hui;LIU Ye-yu;WU Su-lan;ZHANG Bo-qiao(Institute of Agricultural Science of the Lixiahe District in Jiangsu Province/Yangzhou Sub-center of National Wheat Improvement Center,Yangzhou 225007,China)

机构地区：[1]江苏里下河地区农业科学研究所/国家小麦改良中心扬州分中心,江苏扬州225007

出　　处：《江苏农业学报》2018年第6期1225-1231,共7页Jiangsu Journal of Agricultural Sciences

基　　金：江苏省重点研发计划项目(BE2017340;BE2018350);国家重点研发计划项目(2017YFD0100800)

摘　　要：本研究以1996-2015年江苏省淮南麦区审定的45个品种为材料,对其系谱进行追踪分析,以品种间的亲缘系数(COP)为指标,分析育成品种的亲缘关系和遗传多样性。结果表明,69. 90%的品种组合间存在亲缘关系,全部品种间的COP变幅为0～0.937 5,平均为0.187 5。45个品种通过聚类分析可分为扬麦158衍生品种、宁麦9号衍生品种和其他品种3类,宁麦9号和扬麦158衍生品种的COP均值分别为0.454 3和0.315 6,2类品种间的COP均值为0.114 2。扬麦158和宁麦9号对育成品种的遗传贡献分别为27. 85%和18. 19%。说明江苏省淮南麦区当前品种遗传多样性低,扬麦158和宁麦9号是当前育成品种的骨干亲本。The coefficient of parentage(COP)of 45 winter wheat cultivars developed from 1996 to 2015 in Huainan region of Jiangsu province were used to estimate the genetic diversity of cultivars and the relationship between them.The results showed that 69.90%of all paired cultivars existed relationship,the COP values for all pairs of cultivars ranged from 0 to 0.937 5 with a mean of 0.187 5.Fourty-five cultivars could be divided into three groups by cluster analysis,as Yangmai 158 derived cultivars,Ningmai 9 derived cultivars and other cultivars.The mean COP values of Yangmai 158 and Ningmai 9 groups were 0.454 3 and 0.315 6,respectively,and the mean COP value of cultivars between two groups was 0.114 2.The genetic contributions of Yangmai 158 and Ningmai 9 to the current cultivars were 27.85%and 18.19%,respectively.The genetic diversity of the current cultivars was low,Yangmai 158 and Ningmai 9 were the core parents of the current cultivars in Huainan region of Jiangsu province.

关 键 词：小麦 亲缘系数 遗传多样性 骨干亲本 

分 类 号：S512.1[农业科学—作物学]