黑龙江省中熟玉米杂交种性状的因子分析

The Factor Analysis of Characters on Medium-autumn Maize Hybrid of Heilongjiang Province

应用因子分析法以黑龙江省 2003 年第六区玉米区域试验的 12 个参试组合(含对照)为研究材料,对参试组合各农艺性状变异的因子进行了分析研究。结果表明:穗长、穗粗、穗行数、行粒数是很难同步改良的性状,是影响玉米生产的主要因子,只能协调改良各性状以获取最佳效果;穗位高、株高、叶片数、百粒重、秃尖和出籽率是容易协同改良的性状,应加以合理地选择利用。

To analysis the variance factors of the agronomic characters, the twelve trial combinations of the sixth maize test region (including contrast) were used by the factor analysis method in Heilongjiang province in 2003. The result showed that it was very difficult to improve some characters with synchronization, such as the ear length, ear thickness, rows per ear, kernels per row. And they were all the main factors which effect the maize yield, so we could only improve by assorting with the all factors to attain the best purpose. On the other hand, there were some characters which were very easy to cooperate with improvement and reasonable to select and use, such as the ear height, ear length, leaf number, weight of per hundred grains, bald and grain production rate.