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Acta Prataculturae Sinica ›› 2010, Vol. 19 ›› Issue (4): 22-32.

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The mutual allelopathic effect between invasive plant Flaveria bidentis and four forgage species

HUANGFU Chao-he, CHEN Dong-qing, WANG Nan-nan, YANG Dian-lin   

  1. Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
  • Received:2009-11-16 Online:2010-08-20 Published:2010-08-20

Abstract: Efforts to control exotic invasive allelopathic plants and reclamation of invaded areas may require establishing species that are tolerant to allelochemicals. Mutual allelopathy between invasive plant Flaveria bidentis and four forage species, Cichorium intybus, Trifolium pratense, Medicago sativa and Lolium multiflorum, was investigated through Petri dishes assay in the laboratory. The results showed that allelopathic activity depended on both the concentration levels of the extracts and plant tissues from which the extract was derived. The synthetic effect of both types of aqueous extract across the concentration range from F. bidentis on M. sativa was less zero, thus the growth of this forage species was actually stimulated while other three forage species inhibited at most concentrations, even to different degree. At same time, this forage species shows higher phytotoxic activity on the germination and seedling growth of seed of F. bidentis, respectively, with the synthetic effect of 65% and 93% with leaf and stems and roots extract, respectively. Based on these results, we assigned the species M. sativa as promising native species for restoration of sites infested with F. bidentis.

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