赤霉素(GA_3)鉴定水稻新矮源效果研究  

Effect of GA 3 for Identifying Background of New Semidwarf Source in Rice

作　　者：刘建昌[1] 蒋志谦[1] 严宗卜[1] 曹绍书[1] 

机构地区：[1]贵州省农业科学院水稻研究所

出　　处：《贵州农业科学》1997年第6期3-7,共5页Guizhou Agricultural Sciences

摘　　要：在水稻幼苗期、分蘖期、园秆拔节期，用不同浓度的赤霉素（ＧＡ３）溶液，连续４年重复３～４次处理ｓｄ－１和５个非ｓｄ－１基因矮生和半矮生水稻品种。结果表明：除雪禾矮早有些差异外，４个矮生和半矮生基因品种株高不论在幼苗期、分蘖期或园秆拔节期对ＧＡ３反应均敏感。相关分析表明：这种敏感性在幼苗期与分裂期和园秆拔节期之间呈显著正相关，相关系数分别为０．８５７１＊和０．８７５６＊，分裂期与园秆拔节期也呈正相关（０．９２１３＊）。说明目前国内外采用以水稻株高对ＧＡ３反应敏感与否来判断是否携带ｓｄ－１基因的方法是不可靠的。如何快速有效鉴定新矮源需进一步探索。sd 1 gene and 5 non carrying sd 1 dwarf and semidwarf gene varieties in the seedling stage,the tillering stage and the shooting stage were separately treated with varous concentration of gibberellic acid(GA 3).The results showed that shooting height in 4 dwarf and semidwarf gene varieties as same as sd 1 gene varieties were sensitive to GA 3 treatment.Statistical analysis indicates that there exist remarkable positive correlation between the seedling stage,the tillering stage and the shooting stage.It seems to be unreliable the method,depending on whether sensitive or not to GA 3,can be used to decide whether carry sd 1 gene or not in rice.The rapid method for identifying different dwarf genes in rice should be studied hereafter.

关 键 词：水稻 矮秆基因 赤霉素 育种 

分 类 号：S511.032[农业科学—作物学]