| 水稻籽粒中内源多胺及其与籽粒充实和粒重的关系 |
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| 引用本文： | 杨建昌,朱庆森.水稻籽粒中内源多胺及其与籽粒充实和粒重的关系[J].作物学报,1997,23(4):385-392. |
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| 作者姓名： | 杨建昌 朱庆森 |
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| 作者单位： | 扬州大学农学院，江苏扬州，225009 |
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| 基金项目： | 江苏省自然科学基金资助项目 |
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| 摘 要： | 以８个水稻品种（含杂交稻组合）为材料，研究了籽粒发育期内源多胺的含量及其与籽粒充实和粒重的关系。结果表明：籽粒中Ｐｕｔ（腐胺）、Ｓｐｄ（亚精胺）和Ｓｐｍ（精胺）的含量，强势粒高于弱势糕卫粒充实好的品种（组合）高于籽粒充实差的品种（组合），尤以Ｓｐｄ和Ｓｐｍ更明显；籽闰中Ｓｐｄ和Ｓｐｍ的含量或浓度，以及Ｓｐｄ／Ｐｕｔ和Ｓｐｍ／Ｐｕｔ的比值与谷粒充实率和千粒軎于极显著正相关在花后３天喷施外源多胺（１ｍ
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| 关 键 词： | 水稻 多胺 籽粒充实 粒重 |
| 收稿时间： | 1996-07-08 |
| 修稿时间： | 1996-12-30 |
Polyamines in Rice Grains and Their Relations with Grain Plumpness and Grain Weight |
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| Yang Jianchang Zhu Qingsen Wang Zhiqin Cao XianzuAgricultural College of Yangzhou University,Yangzhou.Polyamines in Rice Grains and Their Relations with Grain Plumpness and Grain Weight[J].Acta Agronomica Sinica,1997,23(4):385-392. |
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| Authors: | Yang Jianchang Zhu Qingsen Wang Zhiqin Cao XianzuAgricultural College of Yangzhou University Yangzhou |
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| Institution: | Agricultural College of Yangzhou University, Yangzhou 225009 |
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| Abstract: | Using 8 rice varieties (including hybrid combinations) as materials, polyamines in developing grains and their relations with grain plumpness and grain weight were studied. The results showed that a) , the content of Put(putrescine), Spd(spermidine) and Spm (spermine) , especially Spd and Spm, was higher in strong potential grains than in weak potential ones, and higher in the varieties with high grain plumpness than in those with low grain plumpness; the content or concentration of Spd and Spm in grains, and values of Spd/Put and Spm/Put were very significantly correlated with grain-filling percentage and 1000-grain weight; and b), spraying exogenous polyamines(1mmol/L Spd or 0. 5 mmol/L Spm) on the third day after anthesis increased Spd and Spm content in grains, endosperm cells, grain plumpness and grain weight; however, the results were reversed when polyamine synthesis inhibitor MGBG was used. It is suggested that polyamines, especially Spd and Spm, play an important role in grain filling and grain-weight increase. |
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| Keywords: | Rice Polyamines Grain plumpness Grain weight |
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