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对63个籼型恢复系进行高温处理,各恢复系的结实率均出现不同程度的降低,降幅均达极显著水平。结实率大于60%,且结实率降幅小于32.0个百分点的恢复系有11个,占供试恢复系总数的17.46%。研究还表明,热害对恢复系结实率的影响与恢复系的亲缘有关。
When 63 indica restorer lines were treated with high temperature, the seed setting rate of all the restorer lines decreased to some extent, both of which reached an extremely significant level. The rate of seed setting was more than 60%, and the number of restorer lines with seed setting rate less than 32.0 percentage points decreased, accounting for 17.46% of the total number of restorer lines tested. The study also shows that the impact of heat damage on the seed setting rate of restorer lines is related to the kinship of restorer lines.