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Relationship between Chemical and Physical Parameters of Maize Varieties and Susceptibility to Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)


Relationship between Chemical and Physical Parameters of Maize Varieties and Susceptibility to Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)



Southwestern Entomologist 34(2): 159-166



ISSN/ISBN: 0147-1724

DOI: 10.3958/059.034.0206

Fourteen varieties of maize were analyzed for physical and chemical characteristics to study their relationship with susceptibility to maize weevil, Sitophilus zeamais (Motschulsky). Free-choice and no-choice tests were carried out at 27 degrees C and 70% relative humidity. The susceptibility of maize varieties to attack by maize weevil was not related to grain hardness nor chemical composition. Insects selected softer and harder varieties for oviposition. The number of damaged grains was positively correlated with insect emergence. Germination was less in varieties susceptible to the insect. No alpha-amylase inhibitors were detected in the maize varieties.

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Accession: 066222917

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