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以７个同质（陕２Ａ胞质）异核不育系为试材，研究了基因型及开花前５～１６ｄ气温（日平均气温，日最高气温，日最低气温）对ＣＭＳ育性的影响。结果表明，这７个不育系间ＭＳＩ存在显著差异，不育系２０９Ａ的ＭＳＩ值仅有０．２５０，而不育系１８２Ａ则达１．３５０，其它５个不育系的ＭＳＩ值介于二者之间；开花前气温对不同不育系ＭＳＩ影响程度不同，除不育系１９５Ａ外，其它６个不育系ＭＳＩ都与开花前气温有关，且气温对不同不育系雄蕊发育的影响时期亦不同。
Seven homozygous (Shan 2 A cytoplasmic) heterokaryotic lines were used as materials to study the effect of genotype and temperature (daily average temperature, daily maximum temperature and daily minimum temperature) 5 ~ 16 days before flowering on CMS fertility . The results showed that there was a significant difference in MSI among these 7 CMS lines. The MSI value of CMS line 209A was only 0.250, while that of 182A line was 1.350. The MSI values of the other 5 lines ranged from The effect of air temperature on the MSI of different CMS lines was different. Before and after flowering, the MSIs of the other six CMS lines were related to the pre-bloom air temperature and the effect of temperature on the stamen development of different CMS lines The period is also different.