作　　者： ;

机构地区： 华南农业大学

出　　处： 《Acta Botanica Sinica》 1996年第4期302-306,共5页

摘　　要： Ｆｅ２＋ 可诱发水稻（Ｏｒｙｚａ ｓａｔｉｖａ Ｌ．）谷粒颖壳中释放大量乙烯，诱导反应是一个非酶促的化学过程。可能在谷粒颖壳中存在一种非气态的乙烯前体，在Ｆｅ２＋ 的作用下可转化为气态乙烯。Ｆｅ２＋ 促进水稻幼苗的生长可能是通过其诱导乙烯所引起的。因为Ｆｅ２＋ 诱发颖壳中的乙烯释放和它促进幼苗生长在时间上正好同步，当第一次处理后再更新Ｆｅ２＋ 溶液时，不再能诱发乙烯释放，也不再促进幼苗生长；Ｆｅ２＋ 不能刺激萌发糙米的乙烯产生。 Ferrous iron might induce ethylene production from rice(Oryza sativa L.) husk. The induction was a non enzymic chemical process, in which probably a non gaseous precursor could be converted to ethylene by the action of Fe 2+ . Fe 2+ stimulated seedling growth was probably mediated by the induced ethylene based on the following evidences: (Ⅰ) The induction and the stimulation were synchronous in time within one day only. Once seedling growth was initiated renewal of Fe 2+ solution,even on the following day,exerted no more effect neither on ethylene production nor on seedling growth; (Ⅱ) Ferrous iron was neither capable to stimulate the ethylene production of rice caryopsis,nor able to stimulate the seedling growth of germinated caryopsis.

关 键 词： 水稻 颖壳 乙烯 铁离子 幼苗 生长

领　　域： [农业科学]