Terpenoids in root exudates of different allelopathic rice varieties

Abstract

Abstract: In this paper,a strong allelopathic rice variety PI312777 and a weak allelopathic rice variety Lemont were used as test materials,and the root exudates of two rice varieties grown in the media of sand and soil were respectively collected by using circulation system approach.The terpenoids in ether-extracts were detected by GC-MS,and characterized by spectrum database.The results showed that some terpenoids such as limonene oxide,limonene dioxide,carvone oxide,carveol,and cedrol were detected in the ether-extracts.Different rice varieties had the similar kinds of terpenoids,but their existing modes and quantities were different.The differences between different various cultural methods and between rice varieties were further discussed.

Key words: Oryza sativa, Allelopathy, Terpenoids, Allelochemicals

CLC Number:

HE Haibin, HE Huaqin, LIN Wenxiong, CHEN Xiangxu, JIA Xiaoli, XIONG Jun, SHEN Lihua, LIANG Yiyuan . Terpenoids in root exudates of different allelopathic rice varieties[J]. Chinese Journal of Applied Ecology, 2005, 16(4): 732-736.

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