| 两系杂交稻胚乳内源多胺及其与粒重关系研究 |
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| 引用本文： | 匡逢春,萧浪涛,夏石头,李合松,童建华,何长征.两系杂交稻胚乳内源多胺及其与粒重关系研究[J].湖南农业大学学报(自然科学版),2005,31(5):472-475. |
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| 作者姓名： | 匡逢春 萧浪涛 夏石头 李合松 童建华 何长征 |
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| 作者单位： | [1]湖南农业大学湖南省植物激素与生长发育重点实验室,湖南长沙410128 [2]湖南农业大学园艺园林学院,湖南长沙410128 |
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| 基金项目： | 国家科技部资助项目(00NKY1003)，教育部骨干教师基金资助项目(2000-99B05) |
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| 摘 要： | 以粒重差异明显的两系杂交稻为材料，研究上部籽粒和下部籽粒胚乳内源多胺变化及其与粒重的关系．结果显示：灌浆前期，籽粒中Put（腐胺）、Spd（亚精胺）和Spm（精胺）的含量，上部籽粒高于下部籽粒，粒重大的组合高于粒重小的组合，尤以Put和Spd更明显；籽粒胚乳中Spd和Spm的含量，以及Spd／Spm，Put／Spd和Put／Spm的值与实粒平均千粒重呈正相关。表明多胺特别是Spd和Spm对水稻籽粒充实和增加粒重有重要作用．
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| 关 键 词： | 内源多胺 籽粒充实 粒重 两系杂交水稻 |
| 文章编号： | 1007-1032(2005)05-0472-04 |
| 修稿时间： | 2005年5月24日 |
Studies on Endogenous Polyamines in Endosperm and Its Relations to Grain Weight in Two-Line Hybrid Rice |
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| KUANG Feng-chuna,XIAO Lang-taoa,XIA Shi-toua,LI He-songa,TONG Jian-huaa,HE Chang-zhengb.Studies on Endogenous Polyamines in Endosperm and Its Relations to Grain Weight in Two-Line Hybrid Rice[J].Journal of Hunan Agricultural University,2005,31(5):472-475. |
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| Authors: | KUANG Feng-chuna XIAO Lang-taoa XIA Shi-toua LI He-songa TONG Jian-huaa HE Chang-zhengb |
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| Institution: | KUANG Feng-chuna,XIAO Lang-taoa*,XIA Shi-toua,LI He-songa,TONG Jian-huaa,HE Chang-zhengb |
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| Abstract: | This paper is an attempt to probe into the endogenous polyamines in endosperm and its relations to grain weight within different panicle parts in two-line hybrid rice.The results showed that the contents of endogenous endosperm Put,Spd and Spm in grain of three uppermost panicle branches is obviously higher than that in three lowermost panicle branches during the beginning stage of grain-filling,and line with heavier grain-weight is higher than that in the lighter one,especially for the Spd and Spm.The contents of Spd and Spm and the ratio of Spd/Spm,Put/Spd,and Put/Spm were found positively correlated to the average 1000 filled-grain weights.This suggests that polyamines,especially for the Spd and Spm,have an important role in grain-filling and grain weight. |
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| Keywords: | endogenous polyamines grain-filling grain weight two-line hybrid rice |
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