SHEN Li-Hua, GUO Qiong-Xia, XIONG Jun, LI Guo-Qing, LIN Wen-Xiong. Solidago canadensis L. allelopathy and resource competitiveness under different nitrogen supply[J]. Chinese Journal of Eco-Agriculture, 2008, 16(4): 900-904. DOI: 10.3724/SP.J.1011.2008.00900
Citation: SHEN Li-Hua, GUO Qiong-Xia, XIONG Jun, LI Guo-Qing, LIN Wen-Xiong. Solidago canadensis L. allelopathy and resource competitiveness under different nitrogen supply[J]. Chinese Journal of Eco-Agriculture, 2008, 16(4): 900-904. DOI: 10.3724/SP.J.1011.2008.00900

Solidago canadensis L. allelopathy and resource competitiveness under different nitrogen supply

  • To find the relationship between Solidago canadensis L. allelopathy and resource competitiveness in the process of invasion, allelopathy and competition separation-based bioassay (ACS) approach was used to analyze S. canadensis L. response under different nitrogen supply. The results show that the invasive plant S. canadensis L. has a high ability to interfere with target wheat plant. It is highly stable and very competitive, and its allelopathic potential increases with decreasing nitrogen supply in cocultured systems. The reverse is true for the native species of S. decurrens Lour., which has a lower allelopathic potential at all nitrogen supply levels and a low resource competitiveness under normal to rich nitrogen supply. However, S. decurrens Lour. has a remarkably high ability to compete for resources under low nitrogen supply, believed to be induced by co-culture system competition.
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