玉米杂交种主要农艺性状的相关与通径分析

Corelations and Path Analysis of Major Agronomic Character in Maize

对103个玉米杂交种主要农艺性状的相关与通径分析表明,穗粗、行粒数、穗重、穗长、穗行数与单株粒重间均为正相关且相关系数较大,穗粗、行粒数、穗重、穗长、穗行数、百粒重对单株产量的直接通径系数也较大,故穗部性状在影响子粒产量诸因素中占主导地位。穗重是玉米单株产量的重要指标。同时指出,玉米杂交种的选育要注意到各农艺性状协调,找出适合当地的高产的杂交种。

Correlation and path analysis of maize major agronomic characters were made in 103 maize hybrids. The results indicated that ear diameter , rows per ear,ear weight,ear length,and rows per ear to seeds weight of per plant showed positive and more great correlationship than the others. The results of path analysis indicated that directly path coefficients of those characters to seeds weight of per plant is positive and more greatly than the others. Therefore the biggest influencing factor to seeds weight of per plant lies in charactes of maize spike. Ear weight is a important index to the yield of per maize plant. Meantime, when selecting high grain yield hybrids of maize,we must pay more attention to adjust each character in harmorious way.