Data/hora: 23/06/2024 13:22:40

Biblioteca(s): | Embrapa Agricultura Digital; Embrapa Gado de Leite.
Data corrente: | 16/07/2010
Data da última atualização: | 09/08/2022
Autoria: | SOUZA SOBRINHO, F. de; AUAD, A. M.; LEDO, F. J. da S.
Afiliação: | FAUSTO DE SOUZA SOBRINHO, CNPGL; ALEXANDER MACHADO AUAD, CNPGL; FRANCISCO JOSE DA SILVA LEDO, CNPGL.
Título: | Genetic variability in Brachiaria ruziziensis for resistance to spittlebugs.
Ano de publicação: | 2010
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, v. 10, p. 83-88, 2010.
Idioma: | Inglês
Conteúdo: | The aim of this study was to evaluate the resistance of B. ruziziensis clones to the spittlebug species Deois schach and Mahanarva spectabilis. Together with the cultivar Marandu (B. brizantha) and the progenies 77s, 85s and 106s as controls, 71 B. ruziziensis clones were evaluated in a randomized block design. Six spittlebug eggs about to hatch were artificially infested and 40 days later evaluated for the percentage of surviving nymphs and plant damage based on a rating scale. Analysis of variance identified significant differences for nymph survival and plant damage of both spittlebug species. Since nymph survival and damage scores of the clones 100, 95, 19, 42, 93, 4, 92, 47, 26, 63, and 58 were similar to Marandu, these can be considered resistant to insect pests. These results, besides demonstrating the existence of genetic variability for a possible selection, offer hope for an identification of B. ruziziensis spittlebug-resistant genotypes.
Palavras-Chave: | Forage breeding; Mahanarva spectabilis; Melhoramento de forrageiras; Plant resistance; Resistência de plantas.
Thesagro: | Deois Schach.

Categoria do assunto:

F Plantas e Produtos de Origem Vegetal
G Melhoramento Genético

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/884057/1/Genetic-variability-in-Brachiaria-ruziziensis-for-resistance-to-spittlebugs.pdf
Registro original: | Embrapa Gado de Leite (CNPGL)

Exemplares:

CNPTIA - (14916-1) - ADD - AP - PP -  -  -  - DIS
CNPGL - (18256-1) - UPC - AP - DD -  -  -  - DIS