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以三系杂交粳稻的不育系、恢复系和常规粳稻品种为材料,研究了花粉诱导效应对水稻杂交种子粒重的影响。结果表明:对水稻杂交种子粒重具有重要影响的花粉诱导效应广泛存在,其影响程度取决于杂交父母本的具体配组。对于某一杂交父本而言,如果与不同的母本分别杂交,由花粉诱导效应引起的杂交种子粒重的变化往往具有一定的倾向性,这种倾向性具有强弱之分,因父本品种而异;对于某一杂交母本而言,如果与不同的父本分别杂交,由花粉诱导效应引起的杂交种子粒重的变化在不同组合之间大都具有显著或极显著的差异。
The effects of pollen induction on the grain weight of hybrid rice seeds were studied by using CMS lines, restorer lines and conventional japonica rice varieties of three-line hybrid japonica rice as materials. The results showed that there are many pollen induction effects that have an important influence on the grain weight of hybrid rice. The degree of influence depends on the specific parents of the hybrid parents. For a hybrid parent, if different maternal parental hybrids respectively, the pollen induction effect caused by hybrid seed weight changes often have a certain tendency, this tendency has the strength or weakness, because of paternal Varieties vary; For a hybrid parent, if crossed with different paternal parents, the changes of grain weight of hybrid seeds caused by pollen induction mostly have significant or extremely significant differences among different combinations.