摘要
分别用接种南方根结线虫的空心莲子草、莲子草和未接种南方根结线虫的空心莲子草、莲子草喂养莲草直胸跳甲幼虫,比较两种寄主植物莲草直胸跳甲饲喂生长发育及食物利用情况。结果表明,植物种类和线虫侵染的交互作用对莲草直胸跳甲的化蛹率、蛹重及食物转化率存在极显著影响。在未接种线虫处理中,两种寄主植物上莲草直胸跳甲生长发育及食物利用指标均无显著差异,接种线虫后,空心莲子草饲喂的莲草直胸跳甲化蛹率和蛹重显著降低,莲子草饲喂的莲草直胸跳甲蛹重和食物转化率显著增高。由此推断,南方根结线虫侵染抑制了空心莲子草上莲草直胸跳甲的生长发育,而促进了莲子草上莲草直胸跳甲的生长发育及食物利用。
In this study,the growth and food utilization of the larvae of Agasicles hygrophila were investigated.The larvae were fed on two host plants——Alternanthera philoxeroides and Alternanthera sessilis,and both the host plants were infected by Meloidogyne incognita.The results showed that the interaction between the host plant and nematode infection had a significant effect on the pupation rate,pupal weight,and food conversion efficacy of A.hygrophila.There were no significant differences in the growth and food utilization of A.hygrophila feeding on both A.sessilis and A.philoxeroides without nematode infection.However,with the hosts infected by the nematode,the pupation rate and pupal weight of A.hygrophila feeding on A.philoxeroides significantly decreased,whereas the pupal weight and food conversion efficacy of A.hygrophila feeding on A.sessilis considerably increased.It can be inferred that the nematode infection inhibits the growth of A.hygrophila larvae feeding on A.philoxeroides while promoting the growth and food utilization of that feeding on A.sessilis.
作者
项瑶
郭文锋
荣慧
申思
高旭
李晓琼
Xiang Yao;Guo Wenfeng;Rong Hui;Shen Si;Gao Xu;Li Xiaoqiong(Guangxi Key Laboratory of Forestry Ecology and Conservation/Forestry College,Guangxi University,Nanning Guangxi 5300053,China;Guangxi Academy of Agricultural Sciences/Guangxi Crop Genetic Improvement and Biotechnology Laboratory,Nanning Guangxi 530007,China;Guangxi Youyiguan Forest Ecosystem Research Station,Pingxiang Guangxi 532600,China)
出处
《中国植保导刊》
北大核心
2020年第1期60-66,共7页
China Plant Protection
基金
国家自然科学基金(31800423,31660087)
广西自然科学基金青年基金项目(2018GXNSFBA281172).
关键词
地上—地下互作
入侵植物
生物防治
蛹重
化蛹率
食物转化率
above-and belowground interaction
invasive plant
biological control
pupal weight
pupation rate
food conversion efficacy