摘要
测定了遗传背景基本一致的水稻植株内源GA类物质、IAA和ABA的含量.发现我国的sd,基因矮秆水稻内源GA类物质的含量并不低.高秆和带有sd_s基因的矮秆植株的GA类物质含量高于带sd_l基因的矮秆类型.供试的矮秆类型的IAA含量显著低于高秆类型,而ABA含量则有高于高秆的趋势,表明水稻的矮生性并非都是由于体内缺少GA,而低含量的IAA是水稻矮化的决定因素.糯质基因wx对3种内源激素无关.
The levels of plant endogenous hormones(GA, IAA and ABA)in near isogenic rice plants were measured. It was first reported that the level of the gibberellin-like substances in dwarf rice with id, gene(derived from Xueheaizao)was not low. The contents of endogenous gibberellin-like substances in high plants and dwarf rice with id, gene were higher than that in dwarf type with sd1 gene. But dwarf plants had higher ABA content and significantly lower IAA content than high plants. Therefore fit was suggested that the dwarfism of rice was not all resulted from short of GA,and low IAA content,however,was the critical factor of realizing dwarfism of rice. In addition,the waxy gene wx was not related to the endogenous hormones GA.IAA and ABA.
关键词
赤霉素
吲哚乙酸
脱落酸
水稻
semidwarf rice
gibberellin
indole acetic acid
abscisic acid
