Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Preliminary Study On Resistance Against Maize Weevil (Sitophilus Zeamais Motsch) In Tropical Maize Lines

Maize cultivar with resistant to maize weevil is desirable for overcoming storage difficulty and maintaining its seed quality. Using maize resistant cultivars is closely related to sustainable agriculture since they can avoid utilizing chemical pesticides; hence, it is considered to be much friendly to the environment. Preliminary study on the screening of resistant against this pathogen has been performed. Seed hardness, seed damage and seed weight losses were measured. Six lines namely S5Al-8, S5A1-58, S5A1-59, S5A1,-64, S5A1-69 and S5A1-92 were categorized as highly resistant lines, supposed these lines carry genes for insect resistant. Broad genetic and phenotypic variabilities were found for grain damage and grain weight loss. Phenotypic variability estimate for grain hardness was broad as well. Heritability estimates for grain damage and grain weight loss were medium. Grain hardness was found to be negatively correlated with grain damage and grain weight loss. The harder the seed the lower the seed damages and the lower the grain weight loss as well.