杨小舟蛾对4个杨树品种叶片取食的选择性

Feeding Preference of Micromelalopha troglodyta to 4 Poplar Varieties

摘要: 分析杨小舟蛾对4个杨树品种（35杨、I-69杨、107杨和I-72杨）的取食选择性发现：杨小舟蛾对供试杨树品种叶片的取食选择指数为107杨＞I-69杨＞I-72杨＞35杨，叶片可溶性总糖含量为107杨＞I-72杨＞I-69杨＞35杨，叶片含水率为35杨＞I-69杨＞107杨＞I-72杨。相关性分析结果显示：杨小舟蛾对不同杨树叶片的取食选择指数与叶片可溶性总糖含量呈显著正相关（0870），与叶片含水率呈显著负相关（-0775）；叶片可溶性总糖含量与叶片含水率存在显著负相关（-0682）。

Abstract: The feeding preference of Micromelalopha troglodyta to four varieties of poplars (35#, I-69, 107# and I-72) was studied. The results showed that the feeding preference index of M. troglodyta to the four poplar varieties was in the order of 107#＞I-69＞I-72＞35#. The total soluble sugar content in the leaves of the four varieties was ordered as 107#＞I-72＞I-69＞35#, whereas the water content of the leaves was ordered as 35#＞I-69＞107#＞I-72. The correlation analysis indicated that the feeding preference of M. troglodyta was significantly positively related to the total soluble sugar content (0.870), whereas it was significantly negatively related to water content of the leaves (-0.775). There was a significant negative correlation between the total soluble sugar content and the water content of the poplar leaves (- 0.682).