Abstract: Rice seeds were soaked with different concentration (200, 500, 800, 1000 mg/L) of choline chlo ride. The main results were as follows: Contents of endogenous hormone indole acetic acid (IAA), gibberelin (GA₃), Zeatin in root and top of the rice seedling was increaed obviously, but abscisic acid (ABA) was not changed; Contents of soluble sugar and amino acid was increased; Germination of seeds and growth of seedling was promoted. Rice yield was increased by spraying choline chloride at filling stage.

Key words: choline chloride, endogenous hormone, growth yield

摘要： 研究了氯化胆碱对水稻幼苗内源激素的影响, 以及对水稻种子萌发、生长和产量的影响。结果表明，不同浓度的氯化胆碱溶液浸种明显提高了水稻根、芽中促生型植物激素IAA、GA₃、Zeatin的含量,但对抑制生长型激素ABA含量的影响。氯化胆碱浸种使种子中可溶性糖、氨基酸含量明显提高。不同浓度的氯化胆碱溶液浸种均提高了种子的发芽势。不同浓度的氯化胆碱溶液于灌浆期叶面喷施当地不能成熟的水稻, 结果使结实率提高,谷草比增大,生物产量和经济产量均提高。

关键词: 氯化胆碱, 内源激素, 生长, 产量