| 郇树乾.飞机草对热研二号柱花草化感作用初步研究[J].广东农业科学,2014,41(1):86-89 |
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飞机草对热研二号柱花草化感作用初步研究 |
| Study on allelopathic effect of Eupatorium odoratum L.on Stylosanthes guianensis cv.Reyan |
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| DOI： |
| 中文关键词: 飞机草 热研二号柱花草 化感作用 |
| 英文关键词: Eupatorium odoratum L. Stylosanthes guianensis cv.Reyan allelopathic effect |
| 基金项目:海南省自然科学基金(313042) |
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| 摘要点击次数: 1656 |
| 全文下载次数: 640 |
| 中文摘要: |
| 为研究用热带牧草替代飞机草这种典型的恶性入侵杂草选择了我国热带及南亚热带地区重要的热带
豆科牧草要热研二号柱花草Stylosanthes guianensis cv.Reyan 作为作用的对象采用常规水浸提法比较测试它
们之间的化感效应，从化感作用方面探讨热带牧草对飞机草入侵的适应及竞争的机制为有效控制外来植物入侵提
供思路和科学依据结果表明，飞机草不同部位的水浸提液对热研二号柱花草种子的萌发、根长和苗长都有不同程
度的抑制作用，其中叶的浸提液抑制作用最大。总体来讲，高浓度飞机草根、茎、叶的水浸提液对热研二号柱花草的
综合化感指数（SEI）分别为-0.407 -0.369 -0.493，飞机草水浸液对热研二号柱花草种子萌发及幼苗生长的影响强度
顺序均为叶跃茎跃根。 |
| 英文摘要: |
| To study the feasibility of tropical forage instead of Eupatorium odoratum L., a noxious invasive alien weed,
this study selected an important protein feed in tropical and tropical regions in South Asia of China, Stylosanthes
guianensis cv.Reyan as object. By the conventional water extraction, this study compared the testing of allelopathic effect
between them, explored the mechanism of adaptation and competition of S. guianensis cv.Reyan against invasion from E.
odoratum L., to supply scientific basis for effective controlling of exotic plant invasion. The result showed that the aqueous
extracts from different parts of E. odoratum L. had different degree of inhibition on seed germination, root length and
germinal length of S. guianensis cv.Reyan , the inhibition of leaves extract was the strongest. Comprehensive sense index
(SEI) of aqueous extracts from roots, stems and leaves of E. odoratum L. with high concentration was -0.407, -0.369, -
0.493 respectively. The order of effect of E. odoratum L. aqueous extracts on seed germination and seedling growth of S.
guianensis cv.Reyan was leaf stem root. |
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