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用３２个籼、粳、爪哇型水稻品种配制了－６７个亚种间杂交组合，对这些组合及其亲本所进行的脱粒性研究，结果表明：不同类型的亚种间杂种一代脱粒性没有差异，但同一种类型中不同组合之间的差异却较大；亚种间杂种一代脱粒性的测量值与中亲值呈显著相关，而与亲本没有显著相关；经检验９对亚种间正反交组合的脱粒性其差异没达显著水准。本文还分析了几个常用亲本的脱粒性，并对脱粒性的研究方法进行了讨论。
A total of 32 indica, japonica and Javanese rice cultivars were used to construct the crosses between -67 subspecies. The study on the threshing of these combinations and their parents showed that there was no difference in the threshing of the hybrids between different types of subspecies , But the difference between the different combinations in the same type was greater; the measured value of the offspring of inter-subspecies hybrids was significantly related to the pro-parents, but not significantly correlated with the parents; Cross-combination of threshing the difference did not reach a significant level. This article also analyzed the threshing properties of several commonly used parents, and discussed the research methods of threshing property.