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한국자원식물학회 / v.8, no.2, 2005년, pp.116-121 
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( Phytotoxic Effects of Xanthium occidentale Extracts and Residues on Seedling Growth of Several Plant Species ) |
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| 초 록 |
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| Compositae plants are known to contain biologically active substances that are allelopathic to agricultural crops as well as weed species. Aqueous or methanol extracts and plant residues from leaves of Xanthium occidentale were assayed against alfalfa (Medicago sativa) to determine its allelopathic effects, and the results showed that the extracts applied onto filter paper significantly inhibited seed germination as well as root growth of alfalfa. Aqueous leaf extracts of $40g;L^{-1}$ were completely inhibitory on root growth of alfalfa, while root growths of barley (Hordeum vulgare L.) and soybean (Glycine max L.) were less sensitive. Leaf residue incorporation at $100g;kg^{-1}$ into soil on seedling growth of barnyard grass (Echinochloa crus-galli Beauv. var. oryzicola Ohwi) inhibited both shoot and root fresh weights of barnyard grass by 94 and $96%$, respectively. Methanol extracts from BuOn and EtOAc fractions of X. occidentale reduced alfalfa root growth more than did those from hexane and water fractions. The results based on bioassay of extracts and residues show that X. occidentale had potent an allelopathic activity against other plant species. |
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| 키워드 |
| allelopathy;aqueous extracts;bioassay;fractionation;residue incorporation;Xanthium occidentale; |
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Plant Resources / v.8, no.2, 2005년, pp.116-121
한국자원식물학회
ISSN : 1226-8771
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200507523331759)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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