摘要
以标志基因系和IR36三体为工具材料,通过杂交,研究了籼稻矮秆材料双矮所携半矮秆基因sd-g在染色体上的位置。结果表明:半矮秆基因sd-g与标志基因系M4所携隐性主基因gh-1和M27所携隐性主基因n1表现连锁。sd-g与gh-1之间的交换值为24.33%±3.96%,sd-g与n1之间的交换值为29.44%±4.81%。由于gh-1和n1均位于第5染色体,因而推定sd-g位于第5染色体上。
For investigating the linkage group to which the semidwarf gene sd-g belongs, the crosses between Shuangai(SA),a variety of sd-g carrier in indica rice, and marker stocks as well as the trisomic lines of IR36 were made. The results indicated that the sd-g gene was linked to the marker genes n1(neck leaf) and gh-1 (gold hull-1) The recombation values estimated were 24.33%±3.96% for sd-g to gh-1 and 29.44%±4.81% for sd-g to n1, respectively. It was inferred that the sd-g gene was located on chromosome 5, according to the established relationship between chromosomes and linkage groups.
基金
国家自然科学基金
关键词
水稻
半矮秆基因
三体
染色体
定位
Rice, Semidwarf gene, Marker gene, Trisomics, Chromosome location