河南省玉米地方品种主要产量性状间的相关和通径分析

为了更有效的改良和利用现有的玉米地方品种，基于表型和基因型的聚类分析的基础上，从不同类群中筛选到46份河南省优异地方品种，进行产量及其相关性状的重复鉴定。相关和通径分析结果表明，对产量影响最大的是千粒重（r=0.7734），其次为穗长和穗粗，均达极显著正相关，其中千粒重具有最大的正向直接通径系数（P=0.6518），而穗行数对产量影响较小，未达显著水平。因此，提高千粒重，同时兼顾其它产量性状是提高河南地方品种产量的有效途径。结合田间株型等性状，从众多的地方品种中培育产量突出的自交系，为玉米育种积累材料，并为今后的相关研究提供参考。

Correlation and Path Analysis of Main Yield Characters of Maize Landrace in Henan Province

In order to more effective improve and utilize existing maize landrace,forty-six excellent maize landrace in Henan Province were selected from different genetic groups based on phenotype and genotype cluster analysis,for yield and correlated traits reduplicate identification.Correlation and path analysis indicated that the greatest impact on yield was the 1000-kernel weight (r=0.7734),followed by ear length and ear diameter,covering a very significant positive correlation,in which 1000-kernel weight had the...