薏苡主要农艺性状的相关及通径分析

对来自不同地区的12个薏苡种质资源的10个主要数量性状进行了相关、通径和主成分分析，结果表明：薏苡10个主要数量性状之间存在相关关系，其中生育期与株高、主茎小花数、节数、千粒重呈极显著正相关而与小花数和穗粒数呈极显著负相关；生育期长的品种正向效应大于负向效应。生育期、主茎小花数、小花结实数是影响单株产量的主要因素，且以主茎小花数影响和贡献最大。

Correlation and path analysis between main agronomic characters on Coix lacryma-jobi L.

10 major quantitative traits of 12 Coix germplasms from different regions were analysed through path and principal component analysis.The results showed growth period are highly significant positive correlation with plant height,stem floret number,section number and grain weight,but highly significant negative correlation with the number of florets and grains per spike.The negative effects are greater than positive effects in those varieties with long growth period.Growth period,the floret number of main stem and seed setting rates are the main factor affecting yield per plant,and floret number of main stem made the greatest contribution.