【摘要】 利用水稻温敏核不育系培矮 6 4S分期播种试验 ,对在不同的自然温度条件下的育性观察结果 ,进行育性与温度相关性分析 ,结合散点图、套袋结实率及自交结实率 ,可以判定温敏雄性不育系育性转换的温度敏感期及其长短 ,不育基因表达所需的临界日均温及育性的稳定性。结果表明 :温敏不育系的可育性及敏感期与日均温呈显著负相关。更多还原

【Abstract】 Based on the data of different sowing date experiments under natural temperature conditions, the fertility of Thermo-sensitive Genic Male Sterile (TGMS) line Pei’ai 64S was observed. The correlation between the fertility of TGMS line and temperature was analyzed. The dissemination finger, bagged seed and selfed setting percentage of the TGMS line were established to determine the temperature sensitive stag of fertility. The results showed that the fertility of TGMS line was highly negatively correlated with the mean temperature during the temperature sensitive stage.更多还原