一种扩繁烟蚜茧蜂的载体植物适合性评价

Evaluation of a suitable carrier plant for propagating Aphidius gifuensis Ashmead

为评估平卧菊三七作为载体植物扩繁烟蚜茧蜂的适合性,测试了烟蚜在平卧菊三七、以及常见寄主植物烟草、茄子和二年生萝卜共4种寄主植物上的发育历期和繁殖力等,获得了净增殖率、周限增长率、内禀增长率、平均世代周期、种群加倍时间等主要生命表参数,比对了不同载体植物上的烟蚜对烟蚜茧蜂个体发育的影响。结果显示:这4种寄主植物上烟蚜的发育历期为二年生萝卜(22.79 d)>平卧菊三七(22.22 d)>烟草(22.01 d)>茄子(18.92 d),茄子上最短,其他三种寄主植物上无显著差异;单头烟蚜总产仔量为二年生萝卜(63头)>平卧菊三七(52头)>茄子(43头)>烟草(41头);内禀增长率rm值为茄子(0.283)>二年生萝卜(0.278)>平卧菊三七(0.277)>烟草(0.255)。表明相同条件下,相对于烟草,烟蚜偏好取食平卧菊三七;平卧菊三七作为载体扩繁出的烟蚜茧蜂僵蚜,体型与烟草、二年生萝卜扩繁者的差异不显著。平卧菊三七可用作大量扩繁烟蚜及烟蚜茧蜂的载体植物。

In order to verify whether Gynura divavicata is a suitable host plants for propagating Aphidius gifuensis, we studied the developmental duration and fecundity of Myzus persicae on G. procumbens, Nicotiana tabacum, Solarium melongena and Raphanus sativus. Meanwhile, we got the innate capacity for increase （rm） and other major life table parameters, compared the effects of Myzus persicae which from different host plants on Aphidius gifuensis＇s development. The results showed that the developmental durations of M. persicae on 4 host plants were R. sativus （22. 790 d） 〉 G. procumbens （22. 225 d） 〉 N. tabacum （22. 005 d） 〉 S. melongena （18.924 d）, there were no significant differences on the other 3 plants except S. melongena which was shortest. The reproduction of M. persicae on different hosts was R. sativus （63） 〉G. procumbens （52） 〉S. melongena （43） 〉N. tabacum （41）; rm was S. melongena （ 0. 283 ） 〉 R. sativus （ O. 278 ） 〉 G. procumbens （0. 277 ） 〉 N. tabacum （ 0. 255 ）. Analysis of these results showed that under the same conditions, M. persicae prefer feeding S. melongena rather than feeding N. tabacum; the A. gifuensis＇s development were no significant differences between G. procumbens and S. melongena, Raphanus sativus. In summary, G. procumbens can be used as a suitable host plant to propagate large - scale M. persicae and A. gifuensis.