【摘要】 葡萄根瘤蚜(Daktulosphaira vitifoliae Fitch)是世界检疫性葡萄专性寄生害虫,在我国部分葡萄产区有发现。本研究采用离体根鉴定法对我国6个葡萄根瘤蚜克隆的侵染能力进行了鉴定分析,结果表明:(1)所试根瘤蚜克隆在抗性砧木SO4、5BB、101-14M上均不能够发育为成虫,滞育在1龄。(2)在刺葡萄和贝达上,SH Kyoho克隆的日产卵量明显区别于LN Beta克隆,且二者的总繁殖率也存在明显差别。在刺葡萄上,SH Kyoho克隆的GRR最高(338),明显高于LN Beta克隆(255);而在贝达上,LN Beta克隆的GRR最高(152),明显高于SH Kyoho克隆(125)。(3)综合根瘤蚜在赤霞珠、刺葡萄、贝达和140Ru上的表现,发现SH Kyoho克隆的Ro最大,rm和λ最高,DT最短,与LN Beta克隆有明显区别,说明SH Kyoho克隆侵染能力较强。更多还原

【Abstract】 Grape phylloxera(Daktulosphaira vitifoliae Fitch)feeding only on the vitis is one of the quarantinable pest in the word,phylloxera were reared on grape root pieces maintained in petri-dish in this study.Phylloxera on the resistant rootstocks(SO4,5BB,101-14M) had lower survivor rates than on the susceptible varieties,and the development of phylloxera arrested at the very early stage.The gross reproductive rate and the fecundity schedules show large differences between SH Kyoho clone and LN Beta clone.In addition,life tables were constructed using 2 susceptible varieties,i.e.V.vinifera cv Cabernet Sauvignon,V.Davidii Foex,as well as 2 rootstocks:140Ru and Beta.The survivorship of SH Kyoho clone was better than other clones on Cabernet Sauvignon,but fertility and life history parameters were similary.From the performance of 6 clones on Cabernet Sauvignon,V.Davidii Foex,Beta and140Ru,it was found that net reproductive rates(Ro),innate capacity for increase(r_m) and finite rates of increase(λ) of SH Kyoho were the largest,while double time(DT) was the shortest,indicating that SH Kyoho clone is an aggressive strain.更多还原