茶丽纹象甲对茶树品种的取食选择及其诱导的4种萜烯类化合物

摘要/Abstract

摘要： 本文以龙井43为对照,研究了茶丽纹象甲雌、雄成虫对不同品种茶苗的选择性和取食量差异,并比较了茶丽纹象甲取食诱导龙井43、黄旦、福云6号和丹桂4个品种茶苗所释放的4种重要萜烯类化合物的差异。结果表明,在有食源选择的情况下,茶丽纹象甲雌成虫在福云6号茶苗上的着落率和取食量都显著高于龙井43,而雌、雄两性对龙井43茶苗的取食量均显著高于黄旦;但是,在无食源选择的情况下,同一性别茶丽纹象甲对4个品种茶苗的取食量之间不具显著差异。与同一品种的健康茶苗相比,茶丽纹象甲取食均可显著诱导不同品种4种萜烯类物质的释放。茶丽纹象甲对不同品种茶苗为害相同时间,各品种萜烯类化合物的释放量有所差异,为害12βh,丹桂中芳樟醇的释放量和福云6号中DMNT、法呢烯的释放量显著高于龙井43;为害24βh,黄旦和丹桂中罗勒烯的释放量、福云6号中芳樟醇的释放量,以及黄旦、丹桂和福云6号中DMNT和法呢烯的释放量均显著高于龙井43。

关键词: 茶丽纹象甲, 茶树, 品种, 诱导, 萜烯类化合物

Abstract: The discrepancies of host selection and food consumption of tea weevil in Longjing 43 and three other tea cultivars (namely Longjing 43, Huangdan, Fuyun 6 and Dangui) were investigated in the present study. The emission discrepancies of the four induced terpenoids were also determined in the four cultivars. The results showed that the landing rate and food consumption of tea weevil female adults in Fuyun 6 were significantly higher than those in Longjing 43 when there had food choice. While the food consumptions of both male and female tea weevil adults in Longjing 43 were significantly higher than those in Huangdan. However, when there had no food choice, food consumption of the same gender had no significant difference with each tea cultivar. When compared with the controls, the infestation of tea weevils dramatically induced the emission level of the four terpenoids in each tea cultivar. When the tea plants were infested by the tea weevils for 12 h, the amount of linalool in Dangui, the amount of (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT), and farnesene in Fuyun 6 were significantly higher than those in LongJing 43. When the tea plants were infested by the tea weevils for 24 h, the amount of ocimene in Huangdan and Dangui, the amount of linalool in Fuyun 6, the amount of DMNT and the amount of farnesene in the three tea cultivars, Huangdan, Dangui and Fuyun 6, were significantly higher than those in Longjing 43.

Key words: Myllocerinus aurolineatus, Camellia Sinensis, cultivar, induced, terpenoids

中图分类号:

韩娟娟, 李喜旺, 刘丰静, 辛肇军, 张瑾, 张新, 孙晓玲. 茶丽纹象甲对茶树品种的取食选择及其诱导的4种萜烯类化合物[J]. 茶叶科学, 2017, 37(2): 220-227.

HAN Juanjuan, LI Xiwang, LIU Fengjing, XIN Zhaojun, ZHANG Jin, ZHANG Xin, SUN Xiaoling. Feeding Selection of Tea Cultivars by the Tea Weevil and the Four Induced Terpenoids[J]. Journal of Tea Science, 2017, 37(2): 220-227.

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