华南农业大学学报2017，Vol.38Issue(6)：89-96,8.DOI:10.7671/j.issn.1001-411X.2017.06.014
土沉香对黄野螟的抗性研究
Study on resistance ofAquilaria sinensis againstHeortia vitessoides
摘要
Abstract
[Objective]Heortia vitessoides is an important defoliator attacking the precious tree species of Aquilaria sinensis. The goal was to screen potential insect-resistant plants by surveyingA. sinensis victimization in a large area of forest, and provide a basis for the scientific prevention ofH. vitessoides and the breeding of insect-resistant plants.[Method]In the harmful period ofH. vitessoides, regular surveys on large area ofA. sinensis forests were conducted. In the seriously damagedA. sinensis forests, plant appearances and leaf physical structures at different levels of victimization were observed, and leaves from different insect-resistant plants were collected to feed the newly-hatched larvae ofH. vitessoides. Whether the leaves from different insect-resistant plants were chosen or rejected by the larvae was observed. The differences in larva survival rate, growth and development, pupation and feathering by feeding on different resistantA. sinensis leaves were tested.[Result]There were two undamagedA. sinensis plants in the severely damagedA.sinensis forests, showing good resistance to insect pests (anti-1 and anti-2). There were significant differences in leaf length and thickness between the insect-resistant plants (anti-1 and anti-2) and susceptible plants(P<0.05), while the ratio of leaf length to width had no significant difference. As for leaf physical structures, the leaf upper epidermis cuticle thickness of anti-2 was significantly higher than that of the susceptible plant. The antifeedant rate ofH. vitessoides larvae against anti-2 plant was significantly higher than that against anti-1 plant, and both were above 44.81%. Larvae fed on resistant leaves had significant lower survival rate, adult emergence rate, pupal weight and shorter adult longevity, but longer duration of pupa compared to larvae fed on normalA. sinensis leaves.[Conclusion]A. sinensis plants with tender green leaves are more susceptible toH. vitessoides, while the plants with thick, yellow or dark green leaves have strong resistance toH. vitessoides. ResistantA. sinensis plants have a higher inhibitory effect on feeding activity ofH. vitessoides larvae and hinder larval development.关键词
土沉香/黄野螟/林间调查/抗性鉴定Key words
Aquilaria sinensis/Heortia vitessoides/forest survey/resistance identification分类
农业科技引用本文复制引用
茅裕婷,张蒙,靳秀芳,马涛,王偲,孙朝辉,陈晓阳,李奕震,温秀军..土沉香对黄野螟的抗性研究[J].华南农业大学学报,2017,38(6):89-96,8.基金项目
国家自然科学基金(31270692) （31270692）
广东省林业科技创新项目(2011KJCX028,2014KJCX020-01) （2011KJCX028,2014KJCX020-01）
