| 杨伟，龚荣高，廖明安.紫茎泽兰叶水浸液对芹菜和白菜种子萌发的化感作用[J].广东农业科学,2014,41(14):27-32 |
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紫茎泽兰叶水浸液对芹菜和白菜种子萌发的化感作用 |
| Allelopathy of Eupatorium adenophorum leaves aqueous extract on germination of celery and Chinese cabbage |
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| DOI： |
| 中文关键词: 紫茎泽兰 水浸液 种子萌发 化感作用 |
| 英文关键词: Eupatorium adenophorum aqueous extract seed germination allelopathy |
| 基金项目:国家农业科技成果转化项目（2010GB2F000408） |
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| 摘要点击次数: 1552 |
| 全文下载次数: 569 |
| 中文摘要: |
| 研究了紫茎泽兰叶水提液对芹菜和白菜种子萌发的化感作用。结果表明：紫茎泽兰叶水浸提液对两种植物的发芽率和幼苗生长均有不同程度的化感抑制作用，且对两种植物的化感抑制作用存在较大差异；两种植物种子萌发与幼苗生长受到化感抑制作用，化感抑制作用大小随组分浓度增加而增加袁而低浓度“0.5%”水提液对芹菜的化感抑制作用则不明显；两种种子萌发率和发芽速率均随水提液浓度的增加而降低，其中发芽速率可以作为衡量化感作用的敏感指标；高浓度“2.5%”紫茎泽兰叶水浸液下，两种植物幼苗生长完全受到抑制，对两种植物幼苗生长的抑制率达80%以上；两种植物叶片中丙二醛“MDA”含量随水提液浓度的上升而增加，均与水提液浓度呈极显著的线性正相关关系“P<0.001”。综合来看，紫茎泽兰叶水浸液对两种植物具有一定的化感作用，相同浓度下紫茎泽兰水浸提液对白菜的化感抑制作用明显强于芹菜。 |
| 英文摘要: |
| The aim of this study was to discuss the allelopathic effect of aqueous leaf extract from Eupatoriumadenophorum on the seed germination of celery and Chinese cabbage. The results showed that aqueous leaf extract from E.adenophorum had different allelopathic inhibition on the seed germination and seedling growth of the two tested plants to different extent. Furthermore, this inhibition degree increased with the increasing of concentration of aqueous extract, butlow concentration (0.5%) aqueous extract had no obvious allelopathic inhibition effect on celery. The seed germination and seed germination speed of celery and Chinese cabbage decreased with the increasing of concentration of aqueous extract, and seed germination speed was more sensitive to the extract than seed germination rate, which might be the most sensitive index to judge allelopathy. High concentration (2.5%) of aqueous extract had strong inhibition on the seedling growth of celery and Chinese cabbage of which the inhibition ratio reached more than 80%. The content of MDA of celery and Chinese cabbage increased as the increasing of concentration of aqueous extract which had significantly linear positive correlation with the concentration of aqueous extract “P<0.001”, respectively. What爷s more, the allelopathy of aqueous leaf extract was confirmed and the allelopathic inhibition of cabbage was stronger than that of celery under the same concentration of aqueous extract. |
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