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以廊坊市主要园林绿化树种白蜡(Fraxinus chinensis Rosb.)、法国梧桐(Platanus orientalis L.)、桑树(Morus alba L.)、臭椿(Ailanthus altissima(Mill.)Swingle)、毛白杨(Populus tomentosa Carr.)和香椿(Toona sinensis(A.Juss.)Roem.)为目标树种,于2014年9月在其3年生林地中进行美国白蛾(Hyphantria cunea(Drury))人工接种试验,并用目标树种的离体叶片饲喂美国白蛾的幼虫,统计其食叶量,同时测定目标树种非自然侵染前后可溶性蛋白质含量的变化。结果表明:美国白蛾对目标树种取食量的高低顺序为桑树>法国梧桐>臭椿>白蜡>毛白杨>香椿;美国白蛾取食2、4、6、8、10 d后,对美国白蛾抗性低的桑树、法国梧桐、臭椿、白蜡的可溶性蛋白质含量呈现先上升后下降的趋势,而对美国白蛾抗性高的毛白杨体内蛋白质含量首先表现出降低趋势,但二者均表现为被持续取食10 d后体内蛋白质含量低于取食前和对照;表明不同树种(耐虫和感虫)受美国白蛾侵害后蛋白质含量变化规律不同,抗虫性高低与蛋白质含量的高低没有对应关系。
The main species of Fraxinus chinensis Rosb., Platanus orientalis L., Morus alba L., Ailanthus altissima (Mill.) Swingle and Populus tomentosa Carr. ) And Toona sinensis (A.Juss.) Roem. In September 2014, artificial inoculation experiments of Hyphantria cunea (Drury) were carried out in their 3-year-old woodlands, The body leaves were fed with the larvae of the American white moth, the amount of leaves was measured, and the changes of soluble protein content before and after natural infection of the target species were also measured. The results showed that the order of A. capitatum feeding on the target species was mulberry> sycamore> Ailanthus altissima> wax> white poplar> toona sinensis. After the 2nd, 4th, 6th, 8th, The content of soluble protein in mulberry, sycamore, ailanthus altissima and wax of white moth showed a tendency of first increasing and then decreasing, while the protein content in the body of white moth with high moth resistance was firstly decreased. However, The results showed that the content of protein in different species (insect-resistant and susceptible) was different after inoculation for 10 days, which showed that the content of protein in different species (insect-resistant and susceptible) No correspondence.