中国水稻科学

中国水稻科学

• 研究简报 • 上一篇    

矮泰引-2中半矮秆基因的分离与鉴定研究

梁国华; 潘学彪; 顾铭洪; 嵇朝球   

  1. 扬州大学农学院农学系，扬州225001
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1995-07-10 发布日期:1995-07-10

The Isolation and Genetic Identification of a Semidwarf Gene from an indica Rice Variety Aitaiyin 2

Liang Guohua; Pan Xuebiao; Gu Minghong; Ji Chaoqiu

  

  • Received:1900-01-01 Revised:1900-01-01 Online:1995-07-10 Published:1995-07-10

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关键词: 基因分析, 基因分离, 半矮秆基因

Abstract: In order to discover new semidwarf genes which can be used in breeding program in indica rice, a dwarf variety Aitaiyin 2, was crossed with a tall native cultivar Naming 6. The segregation of the F1 generation appeared to be 9 tall:6 semidwarf:1 dwarf, which meant two semidwarf genes were involved. While Aitaiyin 2 was also crossed with two semidwarf varieties, Nanjing 11 with sd-1 and Xingui'ai with sd-g, the segregation of the F2 generation in the former cross was 3 semidwarf:1 dwarf and that in the latter cross was 27 tall:27 semidwarf:9 dwarf:1 extra dwarf. This indicated that there were two semidwarf genes in Aitaiyin 2, one of them was allelic to sd-1 and the other was a new semidwarf gene which was nonallelic to both sd-1 and sd-g. This new semidwarf gene was named sd-t(t).

Key words: gene segregation, genetic analysis, semidwarf gene