中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

水稻显性半矮秆基因对株高表达的影响及其对GA3的敏感性

程灿1,3吴跃进1,2,*刘斌美1童继平2吴敬德2张瑛1,2吴瑾华4袁勤   

  1. 1中国科学院 安徽省离子束生物工程学重点实验室, 安徽 合肥 230031； 2安徽省农业科学院 水稻研究所, 安徽 合肥 230031； 3上海市农业科学院 作物栽培育种研究所, 上海 201106; 4华中科技大学 生命科学与技术学院, 湖北 武汉 430074; *通讯联系人， Email: yjwu@ipp.ac.cn
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-01-10 发布日期:2006-01-10

Expression of Plant Height and Sensitivity to GA3 of Dominant Semi-Dwarfing Gene in Rice

CHENG Can , WU Yue-jin , LIU Bin-mei , TONG Ji-ping , WU Jing-de , ZHANG Ying , WU Jin-hua , YUAN Qin   

  • Received:1900-01-01 Revised:1900-01-01 Online:2006-01-10 Published:2006-01-10

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被引次数

37

摘要： 对具有显性半矮秆基因的6对高矮秆近等基因系的株高表达特性进行了比较。水稻显性半矮秆基因抑制了茎秆节间的伸长，矮秆系倒4～5、3、2、1节及穗长分别为高秆系的97.2%、53.3%、65.1%、61.9%和94.7%。通过对Y98149（突变体）和Y98148（野生型）在苗期和成株期对GA3反应的研究，发现Y98149较Y98148对外源赤霉素更敏感；内源赤霉素测定结果显示显性半矮秆突变体内源赤霉素含量较低，是野生型的78%。

关键词: 半矮秆基因, 近等基因系, 敏感性, 赤霉素

Abstract: Six tall and dwarf near isogenic lines derived from a dominant semi-dwarfing mutant were studied in plant height traits and sensitivity to GA 3 . The internode elongation was inhibited by the dominant semi-dwarfing gene. The lengths from the basal internode to the uppermost internode and the panicle length in dwarf near isogenic lines were 97.2%,53.3%,65.1%,61.9% and 94.7% of those in the tall ones, respectively. Compared with wild type Y98148, dwarf mutant Y98149 was much more sensitive to GA 3 at both the seedling and adult stages, and showed lower endogenic GA 3 content in plant, with about 78% of the wild one.

Key words: semi-dwarfing gene, near isogenic lines, sensitivity, gibberellin, rice