两种践踏胁迫下克隆整合对入侵植物空心莲子草生长的影响

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Abstract

Effects of clonal integration on growth of invasive clonal plant Alternthera philoxeroides under two kinds of trampling stress were studied.The results are as follows.(1)Severed stolon connection decreased biomass,ramet number,total stolon length and leaf number of apical ramets;however,it obviously increased biomass of basal ramets.(2)Apical ramet trampling stress significantly decreased leaf number and relative chlorophyll content of apical ramets,and basal ramet trampling stress greatly decreased biomass and total stolon length of basal ramets.(3)Under basal ramet trample,stolon connection did not greatly affect ramet number,total stolon length,and leaf number of basal ramets;while it was obviously unfavorable for growth under apical ramet trampling stress.(4)The treatments of trample stress and stolon severing did not affect the performance of whole clonal fragments.

Key words： Alternanthera philoxeroides clonal integration invasive plant trample stress relative chlorophyll content

Received: 25 April 2011

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	WANG Ning
	GAO Yan

Cite this article:

WANG Ning,GAO Yan. Effects of clonal integration on growth of invasive plant Alternanthera philoxeroides under two kinds of trampling stress[J]. , 2011, 30(2): 97-101.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2011/V30/I2/97

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