热害对67个籼型杂交组合结实率的影响

Influence of Thermal Damage on Seed-setting Rate of 67 Indica Hybrid Rice Combinations

对67个籼型杂交组合进行高温处理,各组合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30%的组合有8个,占供试组合总数的11.94%。研究还表明,热害对籼型杂交组合结实率的影响与其亲缘有关。

Sixty - seven indica hybrid rice combinations were treated with high temperature, alter treatment, their seed - setting rates were all significantly decreased （ P 〈0.01 ） , there were 8 combinations whose seed - setting rate was more than 60% and the descending range of seed - setting rate was below 30% , accounting for 11.94%. The result also showed that the influence of thermal damage on seed - setting rate of indica hybrid rice combinations was not correlative with their parents.