SciELO - Scientific Electronic Library Online

 
vol.48 número2Métodos diagnósticos usados na identificação de espécies do nematoide das galhas do BrasilPecanicultura: aspectos gerais da cultura índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Ciência Rural

versão On-line ISSN 1678-4596

Resumo

OLIVEIRA, Nádia Cristina de et al. Popcorn genotypes resistance to fall armyworm. Cienc. Rural [online]. 2018, vol.48, n.2, e20170378.  Epub 26-Fev-2018. ISSN 1678-4596.  http://dx.doi.org/10.1590/0103-8478cr20170378.

The aim of this study was to evaluate popcorn genotypes for resistance to the fall armyworm, Spodoptera frugiperda. The experiment used a completely randomized design with 30 replicates. The popcorn genotypes Aelton, Arzm 05 083, Beija-Flor, Colombiana, Composto Chico, Composto Gaúcha, Márcia, Mateus, Ufvm Barão Viçosa, Vanin, and Viviane were evaluated,along with the common maize variety Zapalote Chico. Newly hatched fall armyworm larvae were individually assessed with regard to biological development and consumption of food. The data were subjected to multivariate analyses of variance and genetic divergence among genotypes was evaluated through the clustering methods of Tocher based on generalized Mahalanobis distances and canonical variable analyses. Seven popcorn genotypes, namely, Aelton, Arzm 05 083, Composto Chico, Composto Gaúcha, Márcia, Mateus, and Viviane,were shown to form a cluster (cluster I) that had antibiosis as the mechanism of resistance to the pest. Cluster I genotypes and the Zapalote Chico genotype could be used for stacking genes for antibiosis and non-preference resistance.

Palavras-chave : antibiosis; nutrition index; plant breeding; Spodoptera frugiperda.

        · resumo em Português     · texto em Inglês     · Inglês ( pdf )