| 摘要: |
| 在水稻(Dryza sativa L.)籽粒的发育过程中,细胞分裂素含量在抽穗后第3天达到高峰;脱落酸(ABA)则出现两次高峰,第一次在抽穗后第7天,第二次在抽穗后第26天之后;而乙烯则在抽穗后第13天之前保持较高的水平。多效唑处理均提高了籽粒的细胞分裂素和ABA 含量。在一般情况下,多效唑处理减少稻穗的乙烯释放。另外,多效唑处理提高稻米的氨基酸总含量20%～30%,改善了稻米的营养品质。 |
| 关键词: 多效唑 水稻籽粒 细胞分裂素 脱落酸 乙烯 |
| DOI： |
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| 基金项目:国家自然科学基金资助课题 |
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| EFFECTS OF PACLOBUTRAZOL ON LEVELS OF ENDOGENOUS HORMONES IN DEVELOPING RICE GRAINS AND ON CONTENTS OF AMINO ACIDS IN RIPENED RICE GRAINS |
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| Abstract: |
| During rice grain development the content of cytokinins had a peak at the 3th day after heading.Two peaks of ABA appeared during grain de- velopment,the first peak appeared at the 7th day after heading,the second peak appeared after the 26th day postheading.The level of ethylene in panicle maitai- ned a higher level in 13 days after heading.The levels of cytokinins and ABA were increased in paclobutrazol-treated rice grains.Normally,paclobutrazol-tre- atment reduced the release of ethylene in panicle.In add... |
| Key words: Paclobutrazol Cytokinin abseisic acid ethylene |
