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Ecological stability of the resistance of early maturing maize cultivars to the corn borer ostrinia nubilalis hbn. lepidoptera pyraustidae at the funnel sheet stage



Ecological stability of the resistance of early maturing maize cultivars to the corn borer ostrinia nubilalis hbn. lepidoptera pyraustidae at the funnel sheet stage



Entomologicheskoe Obozrenie 70(3): 513-523



Ecological stability of the immunological characteristics of early-ripening maize cultivars with respect to Ostrinia nubilalis (Hbn.) was studied in the zones with one and two generations of the pest at different densities and terms of sowing. Comparative estimates of leaves damage as the indices of the plant antiboisis to the 1-2nd instar larvae of O. nubilalis were found to be the least varying at different ecological condition. The varying effect of crops density of the larvae development, with its trend usually altering depending of the terms of sowing, may probably be due to the fact that the optimum hydrothermal conditions for the pest may exist both in thin and close sowing depending on the weather. Selection for antibiotic resistance results usually in decreased of the crop losses from the pest in a wide range of the agricultural conditions.

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Accession: 007236679

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