Terpenoids in root exudates of different allelopathic rice varieties
He, H.; He, H.; Lin, W.; Chen, X.; Jia, X.; Xiong, J.; Shen, L.; Liang, Y.
Ying Yong Sheng Tai Xue Bao 16(4): 732-736
2005
ISSN/ISBN: 1001-9332 PMID: 16011177 Document Number: 591153
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.