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首页> 外文期刊>International Journal of Nematology >Screening of the insecticidal activity of indigenous Xenorhabdus strains against Helicoverpa armigera, independent of their nematode host.
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Screening of the insecticidal activity of indigenous Xenorhabdus strains against Helicoverpa armigera, independent of their nematode host.

机译：筛选当地Xenorhabdus菌株对棉铃虫的杀虫活性，独立于其线虫宿主。

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摘要

Experiments were conducted to screen the insecticidal activity of Xenorhabdus associated with seven indigenous populations of Steinernema spp. Nematode strains X6 and X7 were classified as insecticidal as they were orally toxic to the neonates of Helicoverpa armigera and were able to impart mortality of 50% or more. Further characterization of the insecticidal activity of the strain X6 showed that the sonicated cells were equally effective in causing mortality (82%) and reducing the weight of the larvae (91.2%) in comparison to the control. The supernatant possessed poor oral toxicity (38% mortality) but there was a significant decline in the weight of the larvae to upto 53.52% over healthy controls.
机译：进行了实验，以筛选与7个Steinernema spp土著种群有关的Xenorhabdus的杀虫活性。线虫菌株X6和X7被归类为杀虫剂，因为它们对棉铃虫的新生儿具有口服毒性，并且能够导致50％或更高的死亡率。与对照相比，菌株X6的杀虫活性的进一步表征表明，超声处理的细胞在引起死亡率（82％）和减少幼虫体重（91.2％）方面同样有效。上清液具有较差的口服毒性（38％的死亡率），但幼虫的体重比健康对照组显着下降至53.52％。

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