Data/hora: 10/06/2024 18:33:15

Provedor de dados: | 64
País: | Brazil
Título: | Oviposition preference and larval performance of sugarcane borer in eight sugarcane genotypes
Autores: | Pimentel,Guilherme Vieira; Tomaz,Adriano Cirino; Brasileiro,Bruno Portela; Peternelli,Luiz Alexandre; Barbosa,Márcio Henrique Pereira.
Data: | 2017-07-01
Ano: | 2017
Palavras-chave: | Saccharum spp.; Diatraea saccharalis; Host-plant resistance.
Resumo: | ABSTRACT The sugarcane borer Diatraea saccharalis Fabr. (Lepidoptera: Crambidae) is one of the most important pests of sugarcane in the Americas. The purpose of this study was to assess multiple resistance traits in eight sugarcane genotypes against D. saccharalis, including five commercial cultivars and three exotic germplasm with potential to serve as resistance sources against this pest. The oviposition preference was assessed by using both free-choice and non-choice tests. The performance of both early stage larvae feeding on the leaves and late stages larvae feeding within the stalks were also assessed. There were differences among genotypes for number of both eggs and egg cluster in the free-choice test while no differences in non-choice test were observed. There were also differences in survival of early stage larvae feeding on the leaves, foliar injury rating and stalk damage. The genotype IM76-228 was the least preferred for oviposition and it seems that leaf width had some influence on adults’ preference rather than greening of the leaves. IM76-228 and RB867515 causes higher mortality of early stage larvae feeding in the stalks while IM76-228 and RB985523 had lower damage in both leaves and stalks. The genotype IM76-228 was the most resistant to D. saccharalis and could serve as genes sources for resistance in sugarcane breeding programs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400439
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/1413-70542017414004317
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.41 n.4 2017
Fonte: | info:eu-repo/semantics/openAccess