论文部分内容阅读
在杂交组合8798/68-83的第六代株系中发现了一个具有明显育性转换的单株,经六个世代的系谱选择后出现稳定的群体——鉴29S;通过对该材料的育性转换特性、遗传行为的研究表明:该不育系的育性表达受温度影响,高温导致不育、低温导致可育;对温度的敏感时间为幼穗分化期至第二枝粳分化期;该细胞质中存在对温度敏感的诱导因子,造成低温可育;综合分析结果,我们认为该材料属于质核互作型雄性不育水稻。
A single plant with significant fertility translocation was found in the sixth generation line of the crosses 8798/68-83. After six generations of pedigree selection, a stable population, The results showed that the fertility of the CMS was influenced by temperature, which resulted in infertility at high temperature and fertility at low temperature. The sensitive time to temperature was from young panicle differentiation stage to the second shoot differentiation stage. The temperature-sensitive induction factor exists in the cytoplasm, resulting in fertility at low temperature. According to the results of comprehensive analysis, we believe that the material belongs to the nuclear-type male sterile rice.