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在构建２张ＲＦＬＰ图谱的基础上，定位分析了控制水稻抽穗期的主效基因和微效基因。在特三矮２号／Ｃ．Ｂ．群体中定位到２个主效基因和２个微效基因。该２个主基因分别位于第３、８染色体上，累加贡献率约达５０％，加性效应值分别为７天和６天，而分别位于第１、１２染色体的２个微效基因的贡献率仅分别为８．３％和９．６％，加性效应值仅为３天和４天。在外引２号／Ｃ．Ｂ．群体中定位了２个连锁于第６染色体的主效基因和１个位于第８染色体的微效基因，该２个主效基因的贡献率分别为３５．５％和２７．４％，来自外引２号的该２个基因其效应均为明显推迟抽穗，因而可推测它们为感光性基因，微效基因的贡献率仅为８．９％，基因效应值较小。
Based on the construction of two RFLP maps, the major and minor genes controlling the heading date of rice were located and analyzed. In the special short three on the 2nd / C. B. Within the population, two major genes and two minor genes were mapped. The two major genes were located on the 3rd and 8th chromosomes respectively, with an accumulated contribution rate of about 50%. The additive effect values were 7 days and 6 days respectively, and the contribution of two minor genes located on chromosomes 1 and 12 respectively Rates were only 8.3% and 9.6%, respectively, with additive effects of only 3 days and 4 days. In the cited No. 2 / C. B. Two major genes linked to chromosome 6 and one minor gene located on chromosome 8 were located in the population, with the contribution rates of 35.5% and 27.4%, respectively, from outside The results showed that these two genes were significantly delayed heading, which can be speculated that they are photosensitive genes, the contribution rate of only 8.9% of the minor genes, gene effects smaller.