【摘要】 利用人工气侯箱分期处理与自然条件下分期播种相结合,研究了M901S 和鉴29S 核不育两用系的育性转换规律.结果表明,M901S 对温度的反应比较迟钝,鉴29S 易受温度影响,其育性的敏感期为幼穗分化至第二次枝梗分化期。更多还原

【Abstract】 M901S and Jian 29s,two genic male sterile lines of rice(Oryza sativa L.)were used in aphyehromertric room test and a field experiment where the seeds sown at different dates tostudy the transformation of their pollen fertility.M901S appeared quite insensitive to tem-perature.Jian 29S was sensintive to the changes in temperature,and its sensitivity period co(?)incided with the period from inflorescence primordium initiation to the differentiation ofthe secodary branches of the rachis.更多还原