Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (4): 213-216.doi: 10.11924/j.issn.1000-6850.2014-1962

Special Issue: 园艺

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Inhibition Effect of Three Alien Plants of Conyza on Corynespora cassiicola

Xu Guifang, Wang Hongsheng, Wang Runhao, Wang Yanping,   

  1. Zhu Guanghua, Zhang Weinan(Henan Institute of Science and Technology, Xinxiang Henan 453003)
  • Received:2014-07-16 Revised:2014-11-05 Accepted:2014-11-24 Online:2015-03-20 Published:2015-03-20

Abstract: The objective was to study the inhibitory effect and phylogenetic relationship of three alien plants of Conyza. Using the method of growth rate, biological activity of acetone extracts from Conyza canadensis, C. bonariensis and C. sumatrensis were assayed against Corynespora cassiicola. Results showed that the growth of Corynespora cassiicola were inhibited by acetone extracts from three species in Conyza, this inhibition strengthened with the concentration increasing and weakened along with the time. The inhibition of Conyza canadensis was stronger than that of C. bonariensis and C. sumatrensis. The similarity in the inhibiting rates of C. bonariensis and C. sumatrensis could deduce that they may have close relationship.