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Resistance of some cotton genotypes to the cotton leafworm alabama argillacea lepidoptera noctuidae



Resistance of some cotton genotypes to the cotton leafworm alabama argillacea lepidoptera noctuidae



Anais da Sociedade Entomologica do Brasil 11(2): 197-202



Resistance of cotton plants was studied in relation to the cotton leafworm, A. argillacea (Huebner, 1818). The experiment was conducted in the laboratory, by rearing the larvae on leaves of different cotton genotypes in petri dishes. The resistance effect was measured by weighing 5 day old larvae. There were statistical differences in larval development and greater damage was found on CNPA 78/3B. Less effect was found on 'Mocozinho' and 'Rim de Boi da Paraiba'. The method used for screening for resistance in leafworm is feasible. There is a great amount of genetic variability within and between the cotton lines studied. The possible resistance mechanisms were antixenosis and antibiosis.

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Accession: 006320850

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