| 刘龙元1,2，贺鸿志2，黎华寿2.3种茜草科药用植物乙醇浸提液对萝卜种子
萌发及幼苗生长的化感作用[J].广东农业科学,2014,41(9):33- |
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3种茜草科药用植物乙醇浸提液对萝卜种子
萌发及幼苗生长的化感作用 |
| Allelopathic effects of ethanol extract of three medicinalplants from rubiaceae family on seed germinationand seedling growth of Raphanus sativus L. |
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| DOI： |
| 中文关键词: 鸡屎藤 剑叶耳草 玉叶金花 化感作用 |
| 英文关键词: Paederia scandens (Lour.) Merr. Hedyotis caudatifolia Merr. et Metcalf Mussaenda pubescens L. allelopathy |
| 基金项目:国家“973”计划项目(2011CB100400-G)；广东省
科技计划项目(0203-E12147) |
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| 摘要点击次数: 1249 |
| 全文下载次数: 575 |
| 中文摘要: |
| 以3 种茜草科药用植物鸡屎藤也Paederia scandens (Lour.) Merr.页、剑叶耳草（Hedyotis caudatifolia Merr. et
Metcalf）、玉叶金花（Mussaenda pubescens L.）为试材，采用乙醇提取的方法制备不同浓度的乙醇提液，通过测定其对受
体萝卜（Raphanus sativus L.）发芽率、根系活力、叶片游离脯氨酸和叶绿素含量的影响，比较化感作用强弱。结果表明院
不同供试植物乙醇提液其化感效应不同，且浓度高时，化感作用强；供试植物乙醇提液均显著降低了萝卜发芽率、发芽
速率指数，且剑叶耳草在这两个指标的抑制作用显著高于另二者；供试植物乙醇提液均极显著抑制萝卜胚根和胚芽的
生长，其中鸡屎藤乙醇提液抑制胚芽的作用最强，玉叶金花提液抑制胚根的作用最强；鸡屎藤比玉叶金花更显著地抑
制萝卜幼苗根系活力，然而剑叶耳草却显著地促进；供试植物乙醇提液显著降低萝卜幼苗叶绿素含量，显著提高叶片
脯氨酸含量；鸡屎藤乙醇提液使叶绿素含量减少69.47%耀87.00%，且叶绿素a辕叶绿素b 随处理浓度的增加而降低。 |
| 英文摘要: |
| The allelopathic effects of ethanol extract of Paederia scandens (Lour.) Merr., Hedyotis caudatifolia Merr. et
Metcalf and Mussaenda pubescens L. on Raphanus sativus L. were compared by determining germination, chlorophyll
content, free proline content of leaves and root activities of the acceptor. Results showed that different concentration of
ethanol extract from donors had certain allelopathic effect on R. sativus, and the allelopathic effects enhanced with the
increase of concentration. Ethanol extract from donors significantly reduced germination percentage, germination rate index.
And H. caudatifolia in the inhibition of these two indexes was significantly higher than the other two donors. The three
donors all significantly inhibited the seedling growth of radish, with the strongest inhibition of germ and radical growth
caused by P. scandens and M. pubescens, respectively. P. scandens also caused more significant inhibition of root activity
of R. sativus than M. pubescens, while H. caudatifolia remarkably improved it. Ethanol extract from donors significantly
increased the free proline content of acceptor爷s leaves, and resulted in 69.47%-87.00% reduction of the chlorophyll
content of acceptor, while chlorophyll A / chlorophyll B decreased as the increase of ethanol extract concentration. |
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