玉米杂交种农艺性状与籽粒产量的相关和通径分析  

Correclation and Path Analysis on Agronomic Traits and Kernal Yield of Maize Hybrids

作　　者：杨金慧[1] 毛建昌[1] 李发民[1] 冉隆贵[1] 刘健[1] 刘淑云 

机构地区：[1]西北农林科技大学农学院,杨凌712100 [2]陕西省黄陵县植保站,黄陵727300

出　　处：《中国农学通报》2003年第4期28-30,共3页Chinese Agricultural Science Bulletin

基　　金：国家 8 6 3计划批准项目 (2 0 0 1AA2 410 5 4)

摘　　要：玉米杂交种主要农艺性状遗传相关与通径分析结果表明 ,行粒数、穗行数、百粒重、果穗长在影响籽粒产量诸因素中占主导地位。认为单株籽粒产量改良应在稳定穗数的基础上 ,着重提高行粒数 ;适当增加穗行数以利提高百粒重 ;协调好穗行数、行粒数、百粒重三者关系 ,实现单株产量的较大幅度增长。The genetic correclation and path analysis on agronomic traits and kernel yield of maize hybrids show that the factors namely the number of kernal per row, the number of row per ear,100-grain weight and the ear length are dominant in affecting kernel yield.so,it is reco mmended to be better put emphsis on increasing the number of kernel per ear with the number of ear per plant unchanged to improve kernel yield per plant;upgrade the number of row to raise 100-grain weight;corrdinate the relationships among the number of row per ear;the number of kernel among the number of yow per ear and 100-grain weight to rationally achieve the improvement of kernel yield per plant greatly.

关 键 词：玉米 杂交种 农艺性状 籽粒产量 相关性 通径分析 行粒数 穗行数 百粒重 果穗长 

分 类 号：S513[农业科学—作物学]