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在相同环境条件下,研究了3个母本与5个父本玉米自交系形成的15个杂交组合在充实期子粒重量的增加与充实时间的关系。结果表明,所有杂交组合种子从授粉后10d开始,种子重量的增加均表现为典型的S形曲线增长,且不同基因型表现一致。在授粉后30d内,母本间方差达显著或极显著,父本间方差均不显著,说明在此期间内,对杂交种子粒重增加的效应可能母本比父本更明显;授粉后第35天,母本间方差极显著,父本间方差显著,说明此时母、父本对增加杂交种子粒重的效应均较明显;在授粉40d后,对杂交种子粒重增加的效应转变为父本比母本更明显。
Under the same environmental conditions, the relationship between the increase of grain weight and filling time in 15 hybrids formed by 3 female parents and 5 male inbred lines was studied. The results showed that the seed weight of all the hybrid combination seeds increased from 10 days after pollination to the typical S-shaped curve, and the performance of different genotypes was consistent. Within 30 days after pollination, the variance between maternal and females was significant or extremely significant, and the variance between the two parents was not significant, indicating that the effect on the increased seed weight of hybrid maternal parents may be more obvious than that of male parents during the period of pollination After 35 days, the variance between female parents was significant and the variance between male parents was significant, indicating that the effects of female parent and male parent on increasing the grain weight of hybrid seeds were more obvious at this time. After 40 days of pollination, Paternal parents more obvious than the mother.