摘要
１９８５－１９９０年，作者利用轮回４２２的广亲和基因，初步育成了具有不同生育期的偏粳广亲和恢复系，并与籼型不育系配制了一批强优势早、中、晚组合。本文对其代表性组合优势形成的途径进行了分析，并结合５年来选育的经验，探讨了克服釉粳交中存在的Ｆ１籽粒充实度不好的途径。对合理的稳位结构和株高，以及如何达到增产２０％的目标等提出了初步看法。
In 1986-1990 new wide compatibility R lines inclined to japonica with different growth durations had been developed by using wide compatibility genes in Lun-Hui 422. and used to make a series of strong early. medium and late combinations with B lines of indica type. In the paper how the heterosis of these hybrid combinations is formed is analysed.. and the ways to solve the probrems that the FI grains of indica-japonica hybrids are not filled, what panicle-grain constitution and plant height are reasonable and how the goal of increasing grain yields by 20%can be attained are also discussed.
出处
《杂交水稻》
CSCD
北大核心
1991年第5期29-33,共5页
Hybrid Rice
