Data/hora: 09/06/2024 09:40:37

Provedor de dados: | Bragantia
País: | Brazil
Título: | Evaluation of forage grass resistance to Mahanarva fimbriolata (Stål)
Autores: | Grisoto,Eliane; Vendramim,José Djair; Lourenção,André Luiz; Usberti,José Alfredo; Olinda,Ricardo Alves de.
Data: | 2018-03-01
Ano: | 2018
Palavras-chave: | Spittlebug; Antibiosis; Brachiaria; Host plant resistance.
Resumo: | ABSTRACT The aim of this study was to select forage grasses with potential resistance to Mahanarva fimbriolata by assessing effects on insect. No-choice assays were conducted with 12 genotypes and laboratory-reared insects. The following parameters were assessed: mortality and duration of the nymphal stage; adult weight and longevity; pre-oviposition period; number of eggs/female; viability and duration of the embryonic period. As main result it was verified that the mortality of nymphs reared on Panicum maximum cv. Paredão is almost complete and that this forage grass may be characterized as resistant to this insect by antibiosis. Further, the grasses can be divided into three groups following a cluster analysis: P. maximum cv. Aries, Setaria sphacelata cv. Kazungula, Brachiaria humidicola, A. gayanus and P. maximum cv. Aruana, which are insect-resistant grasses; Brachiaria decumbens cv. Basilisk, B. dictyoneura, B. brizantha cv. MG-4 and B. ruziziensis, which are moderately resistant grasses; and B. brizantha MG-5 and B. brizantha ecotype BB185, which are susceptible grasses.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100107
Editor: | Instituto Agronômico de Campinas
Relação: | 10.1590/1678-4499.2016280
Formato: | text/html
Fonte: | Bragantia  v.77 n.1 2018
Fonte: | info:eu-repo/semantics/openAccess