Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran.
J Econ Entomol. 2010 Jun;103(3):966-72. doi: 10.1603/ec09245.
The potato tuberworm, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae), is an important and ubiquitous pest of potato, Solanum tuberosum L. (Solanaceae), in both field and stores in the subtropical and tropical zones. The evaluation of potato tubers for susceptibility to potato tuberworm, by measuring its life table parameters, is a valuable component of integrated pest management (IPM). Potato tuberworm life table parameters were investigated in laboratory at 24 +/- 1 degrees C, 65 +/- 5% RH, and a photoperiod of 8:16 (L:D) h on six commonly grown potato cultivar tubers: 'Agria', 'Burren', 'Savalan', 'Marfona', 'Sante', and 'Picaso'. No food was provided to feeding adult moths during experiments. The survival rate on Savalan and Burren potatoes was higher than on other cultivars. The highest reproductive rate was observed on Burren potatoes (50.739 +/- 2.45), although there was one statistical group for net reproduction rate (R(o)). The mean generation time (T(o)) was the longest on the Agria potatoes. The significant difference was observed between intrinsic rates of increase (r(m)) on the potato cultivars. The mean generation time has reciprocal relation with r(m); subsequently, the lowest intrinsic rate of increase was observed on Agria potatoes. The highest and lowest r(m) value was observed on Burren and Agria potatoes, respectively. The descending order of intrinsic rates of increase was on Burren, Savalan, Sante, Marfona, Picaso, and Agria potaotes. The lowest r(m) value indicates that Agria is a relatively insusceptible compared with the other cultivars tested and that this cultivar can be used effectively in sustainable IPM.
马铃薯块茎蛾，Phthorimaea operculella（Zeller）（鳞翅目：Gelechiidae），是一种重要的、无处不在的马铃薯害虫，在亚热带和热带地区的田间和贮藏库中都会对马铃薯，Solanum tuberosum L.（茄科）造成危害。通过测量其生命表参数来评估马铃薯块茎对马铃薯块茎蛾的敏感性，是综合虫害管理（IPM）的一个有价值的组成部分。在实验室条件下，在 24±1°C、65±5%相对湿度和 8:16（L:D）h 的光照周期下，对六种常见种植的马铃薯品种的块茎进行了马铃薯块茎蛾生命表参数的研究：“Agria”、“Burren”、“Savalan”、“Marfona”、“Sante”和“Picaso”。在实验过程中，没有为取食的成虫提供食物。在 Savalan 和 Burren 马铃薯上的存活率高于其他品种。在 Burren 马铃薯上观察到最高的繁殖率（50.739±2.45），尽管净生殖率（R(o)）有一个统计组。在 Agria 马铃薯上，世代时间（T(o)）最长。在马铃薯品种上观察到内禀增长率（r(m)）存在显著差异。世代时间与 r(m)呈倒数关系；因此，在 Agria 马铃薯上观察到最低的内禀增长率。在 Burren 和 Agria 马铃薯上观察到最高和最低的 r(m)值。内禀增长率的递减顺序为 Burren、Savalan、Sante、Marfona、Picaso 和 Agria 马铃薯。最低的 r(m)值表明，与测试的其他品种相比，Agria 相对不易感，该品种可有效用于可持续的 IPM。
