Journal
ENVIRONMENTAL PROTECTION AND RESOURCES EXPLOITATION, PTS 1-3
Volume 807-809, Issue -, Pages 719-+Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMR.807-809.719
Keywords
Allelopathy; Aqueous extract; Wedelia trilobata; Alien invasive plant; Crop; Chlorophyll content
Funding
- Beibu Gulf Major Project of the Guangxi Natural Science Foundation [2011GXNSFE018003, 2012GXNSFEA053001]
- Open Foundation of the Key Laboratory of Beibu Gulf Environment Change and Resources Utilization of Ministry of Education, China [BBG1103]
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Wedelia trilobata (L.) Hitche is a widespread alien invasive weed in south China and has been reported to show allelopathic potential causing biological suppression on some plants. In this study, the allelopathic effects of aqueous extracts from the leaves of W trilobata were tested on the seed germination, shoot growth and total chlorophyll content of rape (Brassica campestris L.) using Petri dish bioassay. The results showed that the aqueous extracts at the concentration from 25% to 100% caused a significant reduction in the germination percentage, shoot length and total chlorophyll content of rape. This inhibitory effect was concentration-dependent. These results suggested there was a strong potential phytotoxic effect of W. trilobata on rape and this effect might reduce the production of some crop species.
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