摘要
利用17个玉米杂交种通过对7个穗部性状与产量进行相关和通径分析,结果表明:结实长、出籽率、穗长、行粒数、穗行数、千粒重与产量的相关系数均为正值且较大;出籽率、结实长、千粒重、穗粗、穗长对产量的直接通径系数也为正值且较大。因此,对产量影响较大的因素有出籽率、结实长和千粒重,提高出籽率和千粒重,增加结实长兼顾其它穗部性状是玉米高产的有效途径。
Correlation analysis and path analysis of maize yield and 7 major ear characteristics were made in 17 maize hybrids. The results indicated that the interelation coefficients with length of the ear with kernel,produced grain pe：rcentage, ear length, kernels per row, rows per ear,1000-grain weight showed positive value and more greatly than the other. The results of path analysis indicated that the most directly path coefficients to the yield is from produced grain percentage, the following is length of the ear with kernel,1000-grain weight, ear diameter and ear length. Therefore the bigger influencing factors to the yield are shelling percentage, length of bearing kernel and 1000-grain.
出处
《玉米科学》
CAS
CSCD
北大核心
2005年第3期47-49,52,共4页
Journal of Maize Sciences
关键词
玉米
产量
穗部性状
相关分析
通径分析
Maize
Yield
Ear character
Correlation analysis
Path analysis
