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抽穗期是水稻的一种重要农艺性状,但其遗传控制机理还不清楚。本文利用数据库搜索的方法,搜索并分析了30个与拟南芥光周期调控途径花期控制基因同源的水稻基因。利用水稻多态性数据库,得到了发生在这些基因以及Hd6、Ehd1、OsSOC1上的820个SNP及191个InDel位点。分析表明,这些位点不是平均分布到每个基因上。SNP/InDel含量较高的基因存在SNP/InDel的热点片段。14.1%的SNP位点,及7%的InDel位点分布在基因的编码区。本文也分析了侯选基因侧翼5Kb范围内的SNP/InDel多态性位点。按照侧翼多态性位点数目的分布可以将侯选基因分成4种类型,即两侧保守型、两侧热点型、单侧热点型、一侧热点一侧保守型。
Heading date is an important agronomic trait in rice, but its genetic control mechanism is not yet clear. In this paper, we searched and analyzed 30 rice genes homologous to the flowering stage control genes of photoperiod-regulated pathway in Arabidopsis using database search. Using the rice polymorphism database, 820 SNPs and 191 InDel loci occurred on these genes and on Hd6, Ehd1 and OsSOC1. Analysis shows that these sites are not evenly distributed to each gene. Genes with high SNP / InDel levels have hot spots for SNP / InDel. 14.1% of SNP sites and 7% of InDel sites were located in the coding region of the gene. This article also analyzed the SNP / InDel polymorphism sites flanking the candidate gene 5 kb. According to the distribution of the number of flanking polymorphic sites, the candidate genes can be divided into four types, namely conservative on both sides, hot spots on both sides, hot spots on one side, and conservative spots on the hot side.