广泛存在的同源盒基因家族与生物的发育控制过程有关 .用特异PCR扩增获得同源盒保守序列 ,并通过LM PCR方法获得保守序列的侧翼序列 ,进而对克隆的扩增片段进行序列分析和Southern分析 ,并在水稻的分子连锁遗传图上定位了 6个同源盒序列 .它们分别被定位在水稻第 3 ,4和第 7染色体上 ,在第 3染色体上共定位了 4个同源盒序列 .值得注意的是水稻同源盒序列定位的结果与玉米已知的同源盒基因的定位结果相当符合 . The widespread homologous box gene family is related to the process of development and control of organism, the homologous box conserved sequence is obtained by specific PCR amplification, and the flanking sequence of the conserved sequence is obtained by the LM PCR method, and then the amplified fragment of the cloned sequence is analyzed And Southern analysis, and mapped 6 homologous box sequences on the molecular linkage map of rice.They were mapped on chromosomes 3, 4 and 7, respectively, and co-localized on chromosome 3 It is noteworthy that the alignment of the rice homeobox sequence is in good agreement with the localization of the known homeobox gene in maize.