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广恢型细胞质雄性不育材料 (RMcms)在开花后期均有不同程度的微量花粉发生 ,主要分布于花序的上部 ,在同一植株上 ,其微粉发生的程度次序为主花序 >一次分枝 >二次分枝 ;微量花粉发生与开花前 1 8天、1 9天或 2 0天的平均日最高温和平均日均温有着密切的关系 ,当平均日最高温稳定通过 2 0℃、平均日均温 >1 4 .5℃时所开花朵即有不同程度微量花粉发生 ,说明该类型不育材料属高温敏感型。该类型不育系的不育性因细胞质的来源不同而有很大的差异 ,同一不育系群体中的不同植株的不育性也存在不同程度差别
There were different degrees of micro pollens in wide-type cytoplasmic male sterility materials (RMcms) at the late flowering stage, mainly distributed in the upper part of inflorescences. The order of inflorescences was mainly inflorescence> primary branch> two There was a close relationship between the average daily maximum temperature and average daily temperature of 18 days, 19 days or 20 days before flowering. When the average daily maximum temperature was stable at 20 ℃, the average daily temperature > 1 4 .5 ℃ when the flowers that have varying degrees of micro-pollen occurs, indicating that this type of sterile material is a high temperature-sensitive. The sterility of this type of CMS is very different due to the different sources of cytoplasm. The sterility of different plants in the same CMS line is also different to some extent