FOOD PREFERENCE OF Sitophilus zeamais MOTS., 1855 (COLEOPTERA: CURCULIONIDAE) SUBMITTED TO DIFFERENT VARIETIES OF Zea mays L. (POACEAE) | PREFERÊNCIA ALIMENTAR DE Sitophilus zeamais MOTS., 1855 (COLEOPTERA: CURCULIONIDAE) SUBMETIDA A DIFERENTES VARIEDADES DE Zea mays L. (POACEAE).

Английский. Carriers of a wide genetic diversity, native seeds are better adapted to adverse conditions, have low dependence on external inputs, and contribute to the maintenance of agricultural productivity, thus obtaining a better return on production, even in challenging contexts. However, although resistant, they are frequently attacked by the main pest of stored corn, Sitophilus zeamais Mots., 1855 (Coleoptera: Curculionidae), which can result in deterioration of grain quality, causing millions of economic losses. Thus, the objective of this work was to evaluate the resistance between 5 different varieties of Creole maize to S. Zeamais, using the determination of food preference (Antixenosis). The bioassays were conducted at the Agricultural and Forestry Entomology Laboratory (LEAF), located at the Agricultural Engineering and Sciences Campus, Rio Largo-AL, where the grains were subjected to different physical conditions. The pairings used were: (I) Whole grains of Caatingueiro x Azteca; (II) Whole grains of Purple Palha x Aztec; (III) Jabutão x Aztec whole grains; (IV) Batité x Aztec whole grains. The data were analyzed using the non-parametric χ2 test and compared by the probability of error at 5%. From the results observed, there was a significant difference only in the combination of Azteca x Caantingueiro in 24h, demonstrating the preference of S. zeamais for Azteca grains. These results can contribute to management strategies and pest control tactics.           Translator           Translator           Translator           Translator           Translator           Translator           Translator           Carriers of a wide genetic diversity, native seeds are better adapted to adverse conditions, have low dependence on external inputs, and contribute to the maintenance of agricultural productivity, thus obtaining a better return on production, even in challenging contexts. However, although resistant, they are frequently attacked by the main pest of stored corn, Sitophilus zeamais Mots., 1855 (Coleoptera: Curculionidae), which can result in deterioration of grain quality, causing millions of economic losses. Thus, the objective of this work was to evaluate the resistance between 5 different varieties of Creole maize to S. Zeamais, using the determination of food preference (Antixenosis). The bioassays were conducted at the Agricultural and Forestry Entomology Laboratory (LEAF), located at the Agricultural Engineering and Sciences Campus, Rio Largo-AL, where the grains were subjected to different physical conditions. The pairings used were: (I) Whole grains of Caatingueiro x Azteca; (II) Whole grains of Purple Palha x Aztec; (III) Jabutão x Aztec whole grains; (IV) Batité x Aztec whole grains. The data were analyzed using the non-parametric χ2 test and compared by the probability of error at 5%. From the results observed, there was a significant difference only in the combination of Azteca x Caantingueiro in 24h, demonstrating the preference of S. zeamais for Azteca grains. These results can contribute to management strategies and pest control tactics.

португальский. Portadoras de uma larga diversidade genética, as sementes crioulas são mais adaptadas as condições adversas, dispõem baixa dependência a insumos externos, contribuem para a manutenção da produtividade agrícola obtendo assim melhor retorno da produção, mesmo em contextos desafiadores. No entanto, embora resistentes, são frequentemente atacadas pela praga principal do milho armazenado, Sitophilus zeamais Mots., 1855 (Coleoptera: Curculionidae), na qual podem resultar na deterioração da qualidade do grão, ocasionando em milhões de perdas econômicas. Assim, o objetivo deste trabalho foi avaliar a resistência entre 5 diferentes variedades de milho crioulo à S. Zeamais, utilizando a determinação da preferência alimentar (Antixenose). Os bioensaios foram conduzidos no Laboratório de Entomologia Agrícola e Florestal (LEAF), localizado no Campus de Engenharias e Ciências Agrárias, Rio Largo-AL, onde os grãos foram submetidos a diferentes condições físicas. Os pareamentos utilizados foram: (I) Grãos inteiros de Caatingueiro x Asteca; (II) Grãos inteiros de Palha roxa x Asteca; (III) Grãos inteiros Jabotão x Asteca; (IV) Grãos inteiros de Batité x Asteca. Os dados foram analisados através do teste não-paramétrico χ2 e comparados pela probabilidade de erro a 5%. Pelos resultados observados, houve diferença significativa apenas na combinação de Asteca x Caantingueiro em 24h, demonstrando preferência de S. zeamais pelos grãos Asteca, esses resultados podem contribuir para estratégias de manejo e nas táticas de controle de pragas.