Blok V, Kaczmarek A, Palomares-Rius J E
Plant Pathology Programme, The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK.
Commun Agric Appl Biol Sci. 2011;76(3):307-10.
The potato cyst nematodes (PCN) G. rostochiensis (Woll.) and G. pallida (Stone) are the most economically important pests of potato (Solanum tuberosum L.) in the UK and are widespread in ware potato growing regions in Europe. The new EU directive 2007/33/EC which came into effect July 1, 2010 aims to control their spread and limit further increases in populations. We are investigating the role of temperature in the life cycle of PCN to assess how this effects population multiplication in relation to managing PCN. Hatching and nematode development are stages in the life cycle that are affected by temperature and thus are important life stages that can be examined to determine the impact of temperature on the length of time required for one generation to be completed and the potential for final populations to increase on different potato genetic backgrounds. In some conditions a partial or complete second generation has also been observed within the growing season. Females have been observed on the surface of tubers and "pecking" skin damage can occur which may be a result of a second generation. We are investigating the influence of temperature on the potential for a second generation or the induction of diapause.
马铃薯孢囊线虫（PCN），即罗氏马铃薯孢囊线虫（G. rostochiensis (Woll.)）和白色马铃薯孢囊线虫（G. pallida (Stone)），是英国马铃薯（Solanum tuberosum L.）最具经济重要性的害虫，在欧洲商品马铃薯种植区广泛分布。新的欧盟指令2007/33/EC于2010年7月1日生效，旨在控制其传播并限制种群数量的进一步增长。我们正在研究温度在PCN生命周期中的作用，以评估其如何影响与PCN管理相关的种群增殖。孵化和线虫发育是生命周期中受温度影响的阶段，因此是重要的生命阶段，可以通过研究这些阶段来确定温度对完成一代所需时间长度的影响，以及在不同马铃薯遗传背景下最终种群数量增加的可能性。在某些情况下，生长季节内还观察到了部分或完整的第二代。在块茎表面观察到了雌虫，可能会出现“啄食”造成的皮肤损伤，这可能是第二代造成的结果。我们正在研究温度对第二代发生可能性或滞育诱导的影响。
