通径分析在玉米F2∶3群体叶向值相关性状中的应用  

The Path Analysis on Leaf Orientation Value Characteristics by Using F2∶3 Population in Maize

作　　者：李清超 杨珊 刘建新 文琼 孙开利 梁振娟 吴瑞 王嵩 

机构地区：[1]毕节市农业科学研究所,贵州毕节551700

出　　处：《安徽农学通报》2015年第14期24-25,62,共3页Anhui Agricultural Science Bulletin

基　　金：贵州省科学技术基金项目(黔科合J字[2013]2002号);贵州省科学技术基金重点项目(黔科合JZ字[2014]2001号);毕节市农业攻关项目(毕科合字[2013]19号)

摘　　要：为了揭示玉米叶向值相关性状的影响因素,为育种、定向选择株系及叶向值遗传机制研究提供依据,对玉米F2∶3群体250个家系的叶向值及其相关性状进行了通径分析。结果表明,各性状对叶向值的直接贡献大小依次为X2>X4>X5>X8>X7>X9>X6>X3>X1,所有叶挺直长对叶向值均是正向效应,所有叶夹角对叶向值均是负向效应。因此,在育种、定向选择株系及叶向值遗传机制研究中,应注重对叶挺直长的正向选择效应,注重对叶夹角的负向选择效应。In this paper, The path analysis was used to research the relationship between LOV and leaf orientation value characteristics of F2：3 populations in Maize.The result showed that the values of the direct impact between LOV and other agronomic traits among different varieties were sequenced as follows ： X2 〉 X4 〉 X5 〉 X8 〉 X7 〉 X9 〉 X6 〉 X3 〉 X1.This sequence indicated the effects of Lf between LOV was Positive effect, but the effects of LA between LOV was negative effect.The result of this study may provide useful information for plant-type breeding, directional selection and the studies on genetic mechanism of leaf orientation value in maize.

关 键 词：玉米 叶向值 相关性状 通径分析 

分 类 号：S513[农业科学—作物学]