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本文通过双列杂交和品种比较试验 ,研究了对生玉米与互生玉米产量的构成因子及其遗传效应的差异。结果表明 :对生玉米的穗长、行粒数和单株产量极显著高于互生玉米 ;对生玉米的穗粗、穗行数和千粒重与互生玉米无显著差异。影响对生玉米和互生玉穗长、穗行数和单株产量的随机因素主要是加性效应 ;其遗传率达显著或极显著水平。在主要产量性状中 ,穗粗、千粒重和单株产量的广义遗传率高于互生玉米
In this paper, through the double crosses and breed comparison experiments, the differences of the composing factors and their genetic effects between the yield of maize and maize were studied. The results showed that the spike length, grain number per line and yield per plant were significantly higher than those of alternate maize. There was no significant difference in spike, ear number and 1000-grain weight per hectare of maize. The random factors affecting the length of maize and the number of spike length per ear, the number of ear rows per plant and the yield per plant were mainly additive effects. The heritability was significant or extremely significant. In the main yield traits, the broad heritability of ear diameter, 1000-grain weight and yield per plant was higher than that of alternate corn