학술논문
Phytotoxic Effects of Xanthium occidentale Extracts and Residues on Seedling Growth of Several Plant Species
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- 영문명
- 발행기관
- 한국자원식물학회
- 저자명
- Chon Sang-Uk
- 간행물 정보
- 『Plant Resources』Vol.8 No.2, 116~121쪽, 전체 6쪽
- 주제분류
- 농수해양 > 기타농수해양
- 파일형태
- 발행일자
- 2005.08.31
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국문 초록
영문 초록
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 £^-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 ㎏^-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.
목차
INTRODUCTION
MATERIAL AND METHODS
RESULT AND DISCUSSION
LITERATURE CITED
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