Evaluation of resistance of corn hybrids against the attack of Sitophilus zeamais motschulsky (Coleoptera: Curculionidae) in stored kernels

Authors

  • Alberto Luiz Marsaro Júnior Empresa Brasileira de Pesquisa Agropecuária
  • Sonia Maria Noemberg Lazzari Universidade Federal do Paraná
  • Patrícia Kadozawa Universidade Estadual de Londrina
  • Elisa Yoko Hirooka Universidade Estadual de Londrina
  • Antônio Carlos Gerage Instituto Agronômico do Paraná

DOI:

https://doi.org/10.5433/1679-0359.2005v26n2p173

Keywords:

Insecta, Plant resistance, Stored corn, Maize weevil.

Abstract

Resistance of corn hybrids, cultivated or in phase of genetic improvement in Paraná, was evaluated against the attack of Sitophilus zeamais, main grain pest of corn storage. Samples of kernels of eleven hybrids of corn, IPD T1/3AC, IPD 029, IPT 4/029, AG 5011, IPS G/58, IPT 2/15, IPT 4/15, IPT T/23, IPT 5/T02, IPT 2/92 and IPT 9/13, were infested with adults of S. zeamais and maintained in BOD, at 27±1°C, 75±5% RH and 12 hours of photophase. After 30 days of infestation the following parameters of resistance were evaluated: susceptibility index, reduce of dry mass of the grains, number of emerged insects, biological cycle and adult mass. The most susceptible hybrids to the attack of S. zeamais were: IPD T1/3AC and IPD 029; while the most resistant were: IPT 4/029, AG 5011, IPS G/58, IPT 2/15 and IPT 4/15.

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Author Biographies

Alberto Luiz Marsaro Júnior, Empresa Brasileira de Pesquisa Agropecuária

Entomologista Embrapa Roraima, Br 174, Km 8, Distrito Industrial, 69301-970, CP 133, Boa Vista/RR.

Sonia Maria Noemberg Lazzari, Universidade Federal do Paraná

Depto. de Zoologia, Universidade Federal do Paraná, Jardim das Américas, 81531-980, CP 19020, Curitiba/PR.

Patrícia Kadozawa, Universidade Estadual de Londrina

Depto. Tecnologia Alimentos e Medicamentos, Universidade Estadual de Londrina, 86051-990, Londrina/PR.

Elisa Yoko Hirooka, Universidade Estadual de Londrina

Depto. Tecnologia Alimentos e Medicamentos, Universidade Estadual de Londrina, 86051-990, Londrina/PR.

Antônio Carlos Gerage, Instituto Agronômico do Paraná

Instituto Agronômico do Paraná, Londrina/PR.

Published

2005-06-30

How to Cite

Marsaro Júnior, A. L., Lazzari, S. M. N., Kadozawa, P., Hirooka, E. Y., & Gerage, A. C. (2005). Evaluation of resistance of corn hybrids against the attack of Sitophilus zeamais motschulsky (Coleoptera: Curculionidae) in stored kernels. Semina: Ciências Agrárias, 26(2), 173–178. https://doi.org/10.5433/1679-0359.2005v26n2p173

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