摘要
通过对一水稻顶节间特异伸长突变体Mh-1进行经典遗传学和基因定位分析,认为该表型是一个核基因隐性突变所致。利用Mh-1与正常的T65-sd1杂交的F2群体对该位点定位研究分析,发现其与水稻第5条染色体长臂STS标记E30531和CAPS标记C903连锁,遗传距离分别为6·7cM和2·8cM。经进一步发展新的分子标记,将该基因精确定位在0·3cM的区域,为进一步克隆和研究该基因的分子机制奠定基础。
The height of rice is one of the important agricultural traits,which affects on the rice architecture and production directly, The investigation of the length of the uppermost internocle showed that the elongation mutation of the first internocle is controlled by a recessive nuclear locus, The gene is localized between the STS marker of E30531 and the CAPS marker of C903 on the long arm of chromosome 5,apart from 6.7 cM and 2.8 cM respectively, The fine localization maps the gene between 0. 3 cM flanks, which will help clone this gene and study the mechanism of the gene function.
基金
国家重点基础研究发展规划(973项目)资助(编号:G19990116)~~
