Allelopathy Journal
  • Year: 2006
  • Volume: 18
  • Issue: 2

Allelopathic effects of several oxygenic terpenoids on barnyardgrass.

  • Author:
  • Hai-Bin He, Wen-Xiong Lin, Hai-Bin Wang, Xiang-Xu Chen, Xiao-Li Jia, Chang-Xun Fang, Qiu-Feng Gan, Wen-Xiang Wu
  • Total Page Count: 1
  • Page Number: 32 to 32

Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education

2School of Life Sciences, Fujian Agriculture and Forest University, Fuzhou, 350002, P.R. China.

*E-mail: wenxiong181@163.com

Abstracts, II Chinese Allelopathy Conference, November 3–5, 2005. Agricultural University, Hangzhou, China. Pp. 73, (2005.)

Abstract

Terpenoids are potential natural herbicide due to their allelopathic activity at lower concentration. Five oxygenic cyclo-monoterpenoids, (+)/(−) Carvone (C10H14O), Carveol (C10H16O), Carvyl acetate (C12H18O2), Menthone (C10H18O), and one oxygenic cyclo-sesquiterpenoid Cedrol (C15H26O) were chosen to determine their allelopathic effects on barnyardgrass (BYG) the receiver plant in bioassay. Most of the oxygenic cyclo-monoterpenoids inhibited the root length of BYG at higher concentration (>1–5 ppm) but were stimulatory at lower concentration (<1ppm). The (−) carvone stimulated the root length of BYG in ranges of 0.1–15 ppm. The Cedrol inhibited the root length of BYG in ranges of 0.1–0.9 ppm and the inhibition was 45.05–72.07%.