Study on the Resistance of Different Oil-tea Varieties to Scirtothrips dorsalis

LI De-wei; DENG Yan; JIANG Xue-jian; CHANG Ming-shan; LUO Ji

[Objective] To understand the resistance of oil tea to Scirtothrips dorsalis and analyse the mechanism. [Method] The population densities of S. dorsalis on seven varieties of oil tea in field were investigated, the survival rates were tested by feeding them with the tender leaf of the seven varieties of oil tea in laboratory, and the fuzz distribution characteristics of the tender shoots were recorded respectively. [Result] The results showed that there were significant differences in mean population density of S. dorsalis among these varieties of oil tea in the field; however, the average survival rate of S. dorsalis did not show significant difference in lab. [Conclusion] Based on correlation analysis it was showed that the resistance of oil tea to S. dorsalis did not come from its own chemicals, but might mainly due to the distribution of fuzz on leaf surface.

1. Guangxi Zhuang Autonomous Region Forestry Research Institute, Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China, Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Nanning 530002, Guangxi, China

Received Date: 2015-05-12

Abstract: [Objective] To understand the resistance of oil tea to Scirtothrips dorsalis and analyse the mechanism. [Method] The population densities of S. dorsalis on seven varieties of oil tea in field were investigated, the survival rates were tested by feeding them with the tender leaf of the seven varieties of oil tea in laboratory, and the fuzz distribution characteristics of the tender shoots were recorded respectively. [Result] The results showed that there were significant differences in mean population density of S. dorsalis among these varieties of oil tea in the field; however, the average survival rate of S. dorsalis did not show significant difference in lab. [Conclusion] Based on correlation analysis it was showed that the resistance of oil tea to S. dorsalis did not come from its own chemicals, but might mainly due to the distribution of fuzz on leaf surface.

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Study on the Resistance of Different Oil-tea Varieties to Scirtothrips dorsalis

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