玉米株型性状与单株产量的遗传相关和通径分析  

Genetic Correlation Analysis and Path Analysis Associated with Architecture Traits and Yield per Plant of Maize(Zea mays L.)

作　　者：郑芳英 翟雨 李宗坤 

机构地区：[1]河南省濮阳县职业高级中学,河南濮阳457100 [2]河南省驻马店市遂平县文城乡官庄村,河南遂华463142

出　　处：《安徽农业科学》2012年第25期12406-12407,12418,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]对玉米(Zea mays L.)株型性状与单株产量进行遗传相关分析和通径分析,明确各株型性状对产量的相对重要性。[方法]2005年对18个玉米品种的株高、穗位及棒3叶的叶长、叶宽、叶面积、叶夹角与单株产量的关系进行了分析和研究。[结果]在穗位保持有一定高度的前提下,应适当降低株高,着重对棒3叶长度的选择;在保证一定种植密度的前提下,应选择叶夹角大的玉米杂交种,以获得较高的产量。[结论]该研究可为玉米高产育种特别是为育种工作者田间选择鉴定提供可靠的依据。[Objective] The purpose was to carry out the genetic correlation analysis and path analysis associated with architecture traits and yield per plant pf maize,and confirm the relative importance of all architecture traits to yield.[Method] The relationships between plant height,panicle position,three ear-leaves′ feature（length,width and angle） and yield per plant were study and analyzed in 2005.[Result] The results showed if the panicle position was in an accurate hight,it should be decreased the plant height of maize in some way and mainly chose the length of three ear-leaves.Under the premise of being sure there was a certain planting density,it should be chose the hybrid with bigger leaf angle to obtain a higher output.[Conclusion] The study provides a feasible basis for maize′s high yield breeding,especially breeders’ choice in field.

关 键 词：玉米 株型性状 遗传相关 通径分析 

分 类 号：S513[农业科学—作物学]