Performance and Correlation Path Analysis of Yield and Ear Characters of 45 Maize Varieties in Zhaotong Maize Regional Trials
The correlation and path analysis were conducted on the grain yield and ear traits of 45 maize varieties tested in the maize regional trials from 2018 to 2021 in Zhaoyang of Zhaotong.Results showed that the grain yield,kernel rate,ear length,100-grain weight,kernels per row of the 45 tested varieties showed an upward trend,while the ear diameter and the ear rows did not change significantly,and the bare tip length showed a downward trend.Correlation analysis between grain yield and ear traits showed that the correlation coefficients of ear traits to grain yield were kernel rate(r=0.405)＞ear diameter(r=0.303)＞kernels per row(r=0.287)＞ear length(r=0.237)＞100-grain weight(r= 0.198)＞ear row(r=0.081)＞bare tip length(r=-0.173).Path analysis of grain yield and ear traits showed that ear diameter(0.412)＞kernel rate(0.402)＞ear length(0.148)＞100-grain weight(0.066)＞kernels per row(0.010)＞ear row(-0.078)＞bare tip length(-0.102).
New maize varietiesYieldEar traitsCorrelation analysisPath analysis
国家科技期刊平台
NSTL
万方数据
维普
