灰茶尺蠖,茶树; 茶树品种,取食选择性,生化成分,生长发育," /> 灰茶尺蠖,茶树; 茶树品种,取食选择性,生化成分,生长发育,"/> <span style="font-family:宋体;">灰茶尺蠖对不同茶树品种取食选择与适应性及与茶树叶片营养成分的关系</span>

昆虫学报 ›› 2018, Vol. 61 ›› Issue (11): 1300-1309.doi: 10.16380/j.kcxb.2018.11.007

• 研究论文 • 上一篇    下一篇

灰茶尺蠖对不同茶树品种取食选择与适应性及与茶树叶片营养成分的关系

葛超美#, *, 张家侠#, 孙钦玉, 叶涛, 夏先江, 张冉, 丁勇   

  1. (安徽省农业科学院茶叶研究所, 安徽黄山 245000)
  • 出版日期:2018-11-20 发布日期:2018-11-20

Feeding preference and adaptation of Ectropis grisescens (Lepidoptera: Geometridae) to different tea cultivars and their relationship with nutritional components in leaves of tea plants

GE Chao-Mei#, *, ZHANG Jia-Xia#, SUN Qin-Yu, YE Tao, XIA Xian-Jiang, ZHANG Ran, DING Yong   

  1. (Tea Research Institute, Anhui Academy of Agricultural Sciences, Huangshan, Anhui 245000, China)
  • Online:2018-11-20 Published:2018-11-20

摘要:  

【目的】明确灰茶尺蠖Ectropis grisescens Warren对不同茶树Camellia sinensis品种叶片的取食选择性,以及不同茶树品种叶片对灰茶尺蠖生长发育的影响,以探讨灰茶尺蠖对茶树品种的适应机制。【方法】首先测定灰茶尺蠖幼虫对11个茶树品种叶片的取食选择性,并从中选择5个茶树品种测定其叶片生化成分(水分、可溶性糖、茶多酚和游离氨基酸)含量,以分析灰茶尺蠖取食选择性与茶树生化成分的关系;用筛选出来的5个茶树品种叶片饲喂灰茶尺蠖,测定不同茶树品种对灰茶尺蠖生长发育的影响。【结果】灰茶尺蠖幼虫对11个茶树品种叶片的取食选择性从大到小依次为:平阳特早>舒茶早>中黄2>越香早>中黄1>岚里香>漕溪1>玉露1>福鼎大白>陕茶1>苏玉黄。线性回归分析表明,灰茶尺蠖取食选择性与茶树叶片含水量和可溶性糖含量呈正相关,与茶多酚和游离氨基酸含量呈负相关,说明灰茶尺蠖幼虫偏好取食含水量和可溶性糖含量高的茶树叶片,不喜食茶多酚和游离氨基酸含量高的叶片。不同茶树品种叶片可显著影响灰茶尺蠖低龄幼虫、预蛹和蛹的发育历期,对成虫寿命、末龄幼虫体重、蛹重、幼虫存活率、成虫羽化率、单雌产卵量、取食量和食物利用率均无显著影响。【结论】茶树的生化成分影响着灰茶尺蠖的取食选择,而灰茶尺蠖可通过改变取食策略等方式来适应寄主植物。

关键词: 灰茶尺蠖')">灰茶尺蠖, 茶树; 茶树品种')">茶树; 茶树品种, 取食选择性')">取食选择性, 生化成分')">生化成分, 生长发育')">生长发育

Abstract: Aim This study aims to determine the feeding preference of Ectropis grisescens Warren to leaves of different tea (Canmellia sinensis) cultivars and the influence of leaves of different tea cultivars on the growth and development of this insect, so as to explore the adaptation mechanism of E. grisescens to tea cultivars. Methods The feeding preferences of E. grisescens larvae to leaves of 11 tea cultivars were measured, and five tea cultivars were screened based on the results of preference test. The contents of biochemical components (water, soluble sugar, tea polyphenols and free amino acids) in leaves of five tea cultivars were determined, and then the relationship between the feeding preference of E. grisescens and the contents of biochemical components in leaves of tea plants was analyzed. The effects of different tea cultivars on the growth and development of E. grisescens feeding with leaves of the five tea cultivars were measured. Results The feeding preference of E. grisescens larvae to leaves of 11 tea cultivars in descending order was Pingyangtezao>Shuchazao>Zhonghuang 2>Yuexiangzao>Zhonghuang 1>Lanlixiang>Caoxi 1>Yulu 1>Fudingdabai>Shancha 1>Suyuhuang. The linear regression analysis showed that the feeding preference of E. grisescens was positively correlated with the water content and soluble sugar content in tea leaves, and negatively correlated with the contents of tea polyphenols and free amino acids, suggesting that E. grisescens prefers the tea leaves with higher contents of water and soluble sugar, but not those with higher contents of tea polyphenols and free amino acids. After the larvae fed on leaves of different tea cultivars, their low instar larval, prepupal and pupal duration were significantly different, but their adult longevity, weight of the last instar larva, pupal weight, larval survival rate, adult emergence rate, number of eggs laid per female, leaf consumption and food utilization rate showed no significant difference. Conclusion The biochemical components of tea plants influence the feeding selection of E. grisescens, which can adapt to host plants by changing the feeding strategy.

Key words: Ectropis grisescens, Camellia sinensis, tea cultivar, feeding preference, biochemical component, growth and development