小麦纹枯病抗性与农艺性状的相关分析  

Correlation analysis between wheat sharp eyespot resistance and agronomic traits

作　　者：吴旭江[1] 刘业宇 寿路路[1] 臧淑江[1] 王君婵[1] 程凯[1] 张勇[1] 张伯桥[1] 

机构地区：[1]江苏里下河地区农业科学研究所/农业部长江中下游小麦生物学与遗传育种重点实验室,江苏扬州225007

出　　处：《扬州大学学报（农业与生命科学版）》2017年第4期62-67,共6页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家现代农业产业技术体系建设专项(CARS-3-1-1);江苏省自然科学青年基金项目(BK20130457);扬州市自然科学基金面上项目(YZ2014067)

摘　　要：以高抗纹枯病的种质CI12633和感病品种扬麦9号进行杂交,通过一粒传法获得了包含224个家系的F13代重组自交系(RIL)群体,利用该群体系统分析小麦纹枯病抗性与重要农艺性状间的相互关系。结果表明:小麦纹枯病病情指数与株高相关性不显著,与抽穗期、分蘖角度呈显著或极显著负相关,而与基部节间直径呈极显著正相关。通径分析表明,小麦基部第1节间直径对纹枯病抗性的影响最大。To understand the correlation between wheat agronomic traits and sharp eyespot resistance,we developed 224 recombinant inbred lines（RILs） from the cross between CI12633（a resistant variety） and Yangmai 9（a susceptible variety）through single seed descent method.We assessed agronomic traits and sharp eyespot resistance（R.cerealis isolate R0301） in both field and greenhouse conditions in three growing seasons.Correlation analysis of sharp eyespot resistance,determined using four main agronomic characteristics,found that sharp eyespot resistance was significantly negatively correlated with heading date and tiller angle,and was significantly positively correlated with the diameter of the first stem and second stem.No significant correlation between plant height and sharp eyespot resistance was found.The result of path analysis showed that the diameter of the first stem contributs to wheat sharp eyespot resistance markedly.

关 键 词：小麦 纹枯病 农艺性状 相关分析 通径分析 

分 类 号：S512[农业科学—作物学]