The cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is one of the most important pests on a wide range of crops worldwide. The antibiotic resistance of 10 canola cultivars ‘'Sarigol’, ‘Hayula420′, ‘Opera’, ‘Okapi’, ‘Modena’, ‘RGS003′, ‘Zarfam’, ‘Licord’, ‘Talaye’, and ‘SLM046’) to H. arimgera was evaluated using demographic parameters including life table, reproduction, development, and adult longevity. Larval period ranged from 18.8 to 16.1 d on Hayula420 and RGS003, respectively. The longest development time of immature stages was on Sarigol and Hayula420 (36.8 d) and the shortest one was on Zarfam (34.8 d). The highest daily and total fecundity (1,082.4 and 254.8 eggs, respectively) was on RGS003 and the lowest was on Talaye (517.0 and 41.4 eggs, respectively). The rm values varied from 0.153 on Sarigol to 0.179 on Opera. The net reproductive rate (Ro) was calculated to be lowest on Talaye (157.4) and highest on RGS003 (331.5). The comparison of demographic parameters of H. armigera on different cultivars of canola and the cluster analysis revealed that Hayula420, Talaye, Sarigol, and SLM046 were the most resistant cultivars to this insect. Such results could be useful to develop an integrated pest management strategy of H. armigera on canola cultivars.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.