Allelopathic Potential of Switchgrass (Panicum virgatum L.) on Perennial Ryegrass (Lolium perenne L.) and Alfalfa (Medicago sativa L.)

ISWC OpenIR > 水保所知识产出(1956---)

	Allelopathic Potential of Switchgrass (Panicum virgatum L.) on Perennial Ryegrass (Lolium perenne L.) and Alfalfa (Medicago sativa L.)
	Shui Junfeng; An Yu; Ma Yongqing; Ma, YQ
	2010
发表期刊	ENVIRONMENTAL MANAGEMENT
卷号	46 期号:4 特刊: SI 页码:590-598
摘要	This study investigated allelopathy and its chemical basis in nine switchgrass (Panicum virgatum L.) accessions. Perennial ryegrass (Lolium perenne L.) and alfalfa (Medicago sativa L.) were used as test species. Undiluted aqueous extracts (5 g plant tissue in 50 ml water) from the shoots and roots of most of the switchgrass accessions inhibited the germination and growth of the test species. However, the allelopathic effect of switchgrass declined when extracts were diluted 5- or 50-fold. Seedling growth was more sensitive than seed germination as an indicator of allelopathic effect. Allelopathic effect was related to switchgrass ecotype but not related to ploidy level. Upland accessions displayed stronger allelopathic potential than lowland accessions. The aqueous extract from one switchgrass accession was separated into phenols, organic acids, neutral chemicals, and alkaloids, and then these fractions were bioassayed to test for allelopathic potential. Alkaloids had the strongest allelopathic effect among the four chemical fractions. In summary, the results indicated that switchgrass has allelopathic potential; however, there is not enough evidence to conclude that allelopathic advantage is the main factor that has contributed to the successful establishment of switchgrass on China's Loess Plateau.
关键词	Switchgrass (Panicum Virgatum L.) Allelopathic Potential Ecotype Ploidy Level Allelochemical
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4751
专题	水保所知识产出(1956---)
通讯作者	Ma, YQ
推荐引用方式 GB/T 7714	Shui Junfeng,An Yu,Ma Yongqing,et al. Allelopathic Potential of Switchgrass (Panicum virgatum L.) on Perennial Ryegrass (Lolium perenne L.) and Alfalfa (Medicago sativa L.)[J]. ENVIRONMENTAL MANAGEMENT,2010,46(4 特刊: SI):590-598.
APA	Shui Junfeng,An Yu,Ma Yongqing,&Ma, YQ.(2010).Allelopathic Potential of Switchgrass (Panicum virgatum L.) on Perennial Ryegrass (Lolium perenne L.) and Alfalfa (Medicago sativa L.).ENVIRONMENTAL MANAGEMENT,46(4 特刊: SI),590-598.
MLA	Shui Junfeng,et al."Allelopathic Potential of Switchgrass (Panicum virgatum L.) on Perennial Ryegrass (Lolium perenne L.) and Alfalfa (Medicago sativa L.)".ENVIRONMENTAL MANAGEMENT 46.4 特刊: SI(2010):590-598.

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