| 剪根稻苗移栽后叶鞘~3H-同化物的运转分配特点 |
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| 引用本文： | 任万军,杨文钰,樊高琼,吴锦秀.剪根稻苗移栽后叶鞘~3H-同化物的运转分配特点[J].核农学报,2007,21(4):401-403. |
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| 作者姓名： | 任万军 杨文钰 樊高琼 吴锦秀 |
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| 作者单位： | 四川农业大学农学院,四川,雅安,625014 |
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| 基金项目： | 致谢：四川农业大学原子能应用研究中心张怀渝教授和陈志渝老师在本研究同位素引入和测定中给予了大量的帮助和指导,在此特致谢忱. |
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| 摘 要： | 用3H同位素示踪方法研究了剪根稻苗移栽后叶鞘同化物的运转分配特点。结果表明,剪根处理稻苗各器官干重均低于对照,而3H-同化物的比活度却高于对照,标记后10d多数器官高出对照1倍左右,分蘖高2倍,新根高4倍。剪根处理发根节和新根的放射性总活度和3H-同化物的分配比例均高于对照,意味着其新根的发生更加依赖于主茎叶鞘物质输出。
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| 关 键 词： | 水稻 秧苗 剪根 3H-同化物 |
| 文章编号： | 1000-8551（2007）04-401-03 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2006-10-30 |
CHARACTERISTICS OF ~3H-ASSIMILATE TRANSLOCATION AND DISTRIBUTION OF ROOT-PRUNED SEEDLINGS OF RICE AFTER TRANSPLANTING |
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| REN Wan-jun,YANG Wen-yu,FAN Gao-qiong,WU Jin-xiu.CHARACTERISTICS OF ~3H-ASSIMILATE TRANSLOCATION AND DISTRIBUTION OF ROOT-PRUNED SEEDLINGS OF RICE AFTER TRANSPLANTING[J].Acta Agriculturae Nucleatae Sinica,2007,21(4):401-403. |
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| Authors: | REN Wan-jun YANG Wen-yu FAN Gao-qiong WU Jin-xiu |
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| Abstract: | The characteristics of dry matter accumulation and ~3H-assimilate translocation and distribution of root-pruned seedlings after transplanting were studied.The results showed that shoot dry weight of root-pruned seedling was reduced compared with untreated seedlings.However,~3H specific activity of the rootpruned seedlings was higher than that of control.After 10d of labeling,~3H-specific activity in many organs enhanced 1 times over the CK,furthermore,its tillers increased 2 times and new roots increased 4 times.The higher total ~3H activity and percentage to rooting joints and new roots mean growth of root pruned seedlings more relying on the matter exported from main stem and sheath. |
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| Keywords: | rice(Oryza sativa) seedling root pruning ~3H-assimilate |
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