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研究结果表明:8902S 生育期最长、K-9S 其次、W6184S 最短.W6184S 的生育期在不同生态点的差异性最小;8902S 则在同一地点不同播期间变异最小.植株的高度、幼穗的长度、每穗的总粒数均是8902S>K-9S>W6184S,但它们的变异性则刚好相反.提出了两用核不育系育性转换具有不育基因表达的启动温度、不育基因完全表达的临界温度,育性恢复起始温度和育性完全恢复的临界温度四个温度阀值的新观点.核不育基因的表达与育性恢复是一个非常复杂的生物学现象.同时,讨论了核不育系的选育问题.
The results showed that: 8902S had the longest growth period, followed by K-9S and W6184S the shortest .W6184S had the least differences in the growth stages at different ecological sites; 8902S had the smallest variation at the same site in different sowing times. , And the total grain number per panicle was 8902S> K-9S> W6184S, but their variability was just the opposite. Proposal was made that the fertility transformation of dual-purpose genic male sterile line had the start-up temperature with sterile gene expression, The critical temperature of expression, the initial temperature of fertility restoration and the critical temperature of full restoration of fertility.At the same time, the discussion about the expression of fertility genes and the restoration of fertility is a very complex biological phenomenon. The question of breeding of nuclear sterile lines.