| 地黄源库关系的变化及其与连作障碍的关系 |
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| 引用本文： | 牛苗苗,李娟,杜家方,尹文佳,杨艳会,陈新建,张重义.地黄源库关系的变化及其与连作障碍的关系[J].生态学杂志,2011,30(2). |
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| 作者姓名： | 牛苗苗 李娟 杜家方 尹文佳 杨艳会 陈新建 张重义 |
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| 作者单位： | 河南农业大学中药材研究所,郑州,450002 |
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| 基金项目： | 国家自然科学基金项目(30772729、30973875和81072983); 国家“十一五”科技支撑计划项目(2006BA109B03)资助 |
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| 摘 要： | 通过正茬剪叶模拟连作地黄光合源不足条件下,测定分析植株源与库的关系,应用同位素示踪技术分析连作地黄光合产物的分配及内源激素的变化,以探讨地黄的连作障碍机制。结果表明:剪叶处理对植株的影响不能达到连作障碍程度,其库容及其活性大于连作地黄;连作地黄出现光合产物滞留于地上部,库的活性影响了植株光合产物向库的运输,在生长前期植株内源激素发生了变化;因此断定,连作地黄库容及其活性过低是限制地黄块根膨大的重要因素,库通过不同激素对源的反馈调节,抑制了地上源的光合能力及光合产物向库的分配,导致连作障碍。
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| 关 键 词： | 地黄 连作障碍 14C光合产物分配 内源激素 源库关系 |
Changes in source-sink relationship of photosynthate in Rehmannia glutinosa Libosch. and their relations with continuous cropping obstacle |
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| NIU Miao-miao,LI Juan,DU Jia-fang,YIN Wen-jia,YANG Yan-hui,CHEN Xin-jian,ZHANG Zhong-yi.Changes in source-sink relationship of photosynthate in Rehmannia glutinosa Libosch. and their relations with continuous cropping obstacle[J].Chinese Journal of Ecology,2011,30(2). |
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| Authors: | NIU Miao-miao LI Juan DU Jia-fang YIN Wen-jia YANG Yan-hui CHEN Xin-jian ZHANG Zhong-yi |
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| Institution: | NIU Miao-miao,LI Juan,DU Jia-fang,YIN Wen-jia,YANG Yan-hui,CHEN Xin-jian,ZHANG Zhong-yi(Institute of Chinese Medicinal Materials,Henan Agricultural University,Zhengzhou 450002,China) |
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| Abstract: | In this study,the currently cropped Rehmannia glutinosa was leaf-clipped to simulate the shortage of photosynthate in successively cropped R. glutinosa,and 14C-istope tracer and ELISA techniques were adopted to analyze the distribution of photosynthate and the levels of endogenous hormones in successive R. glutinosa,aimed to approach the source-sink relationship of the phosynthate and to explore the mechanism of continuous cropping obstacle of R. glutinosa. Leaf-clipping did not have the same impact as cont... |
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| Keywords: | Rehmannia glutinosa continuous cropping obstacle 14C photosynthate distribution endogenous hormone source-sink relationship |
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