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通过标准加湿处理、手工脱粒种子发芽情况及落粒数的测定，研究了白粒小麦耐穗发芽能力的选择效果。降雨模拟器在促使群体平均值向高耐性水平漂移中是有用的，但在防雨条件下较大的基因型×年份工作使得对单个基因型未能作出准确的估计。最准确的估计是利用落粒数（ｔ２＝８０．７％）和手工脱粒种子的发芽情况（ｔ２＝３８．４％）得出的结果，这里没有基因型×年份的互作。种子休眠与降雨器中处理３天的落粒数的变化显著相关（ｒ＝－０．５６）。在１９９２年的模拟降雨试验中，穗发芽指数与种子休眠试验指数不相关（ｒ＝０．２０），但在１９９３年的发芽试验中，这两个指数间则为强相关（ｒ＝０．７３）。在相同试验各年份的比较中，落粒数（未作降雨处理）和种子休眠指数两年间的相关系数分别为ｒ＝０．６８和ｒ＝０．９，而两年间的穗发芽指数无相关（ｒ＝－０．０３）。
Through the standard humidification treatment, the germination of hand-threshed seeds and the determination of the number of drop-lined seeds, the selection effect of spike-resistant sprouting ability of white-grain wheat was studied. Rain simulators are useful in driving population shifts to high levels of resistance, but larger genotypes × years of work under rain conditions make an inability to accurately estimate a single genotype. The most accurate estimate is based on the number of fall (t2 = 80.7%) and the germinated condition of hand-threshed seeds (t2 = 38.4%), where there is no genotype × year interaction. There was a significant correlation between the seed dormancy and the change of the number of falling grains in the rainfall for 3 days (r = -0.56). In the simulated rainfall experiment of 1992, the spikelet index was not correlated with the seed dormancy test index (r = 0.20), but in the 1993 germination test, there was a strong correlation between the two indices (r = 0. 73). In the comparison of the years of the same experiment, the correlation coefficients between the number of falling grains (without rainfall treatment) and the seed dormancy index for two years were r = 0.68 and r = 0.9, respectively, but there was no correlation between spike germination index (R = -0.03).