Data/hora: 23/06/2024 10:09:22

Biblioteca(s): | Embrapa Gado de Corte.
Tipo da produção científica: | Artigo em Anais de Congresso / Nota Técnica
Data corrente: | 23/02/2010
Data da última atualização: | 23/02/2010
Autoria: | VALERIO, J. R.; VALLE, C. B. do; CHERMOUTH, k. da S.; SOUZA, M. S. de; PISTORI, M. G. B.; OLIVEIRA, M. da C. M.
Afiliação: | JOSE RAUL VALERIO, CNPGC; CACILDA BORGES DO VALLE, CNPGC; KATYUCE DA S. CHERMOUTH, Bolsista CNPq; MIRIAN S. DE SOUZA, UCDB; MELISSA G. B. PISTORI, UCDB; MARLENE DA C. M. OLIVEIRA, Técnico AGRAER - MS.
Título: | Selection of Brachiaria hybrids presenting antibiosis to the pasture spittlebug Notozulia entreriana (Berg)(Hemiptera: Cercopidae).
Ano de publicação: | 2009
Fonte/Imprenta: | In:SIMPÓSIO INTERNACIONAL SOBRE MELHORAMENTO DE FORRAGEIRAS, 2., 2009, Campo Grande, MS. [Anais]... Campo Grande, MS: Embrapa Gado de Corte, 2009. II SIMF. Comitê editorial: Liana Jank; Lucimara Chiari; Rosângela Maria Simeão Resende.
Páginas: | 3 p.
Descrição Física: | 1 CD-ROM.
Idioma: | Inglês
Notas: | Resumo M25.

Conteúdo:

The beef cattle husbandry in Brazil largely depends on forage grasses of the genus Brachiaria for meat production. Considering their good adaptation, particularly of B. decumbens to low-fertility acid soils, such grasses have been widely established, not only in Brazil, but also throughout Central and South America. Their introduction has increased the stocking rates of pasture lands, particularly in the savannas. The extensive monoculture of susceptible grasses, however, has favored the increase of populations of several spittlebug species, the most damaging pests of Brachiaria in tropical America. They may cause serious losses on millions of hectares of improved
pastures based on cultivars of several species of Brachiaria. These insects compete with grazing animals and can drastically reduce plant growth, dry matter production as well as forage quality (VALÉRIO; NAKANO, 1988). Such insect-plant system includes not only a diverse group of spittlebug species, but also, a group of forage grass species, which are under different management systems, in a broad range of ecological conditions. Except for a few cultivars, including the Marandu, some of the available commercial cultivars of Brachiaria are seriously attacked by the spittlebugs. In spite of their economic importance, much research still needs to be done.
Control efforts have been directed to host plant resistance, alternative that has been recognized as being of easy adoption and of low cost to farmers. Screening for spittlebug resistance has been conducted both at the International Center for Tropical Agriculture - CIAT (FERRUFINO; LAPOINTE, 1989; CARDONA et al. 2004) and at the Brazilian Agricultural Research Corporation – Embrapa (NILAKHE, 1987; COSENZA et al. 1989; VALÉRIO et al., 1997), and promising accessions have been
found. The objective of this work was to evaluate hybrids of the genus Brachiaria as to resistance to the spittlebug Notozulia entreriana.

Palavras-Chave: | Notozulia entreriana.
Thesagro: | Gramínea Forrageira; Melhoramento Genético Vegetal; Pastagem; Seleção; Variedade Resistente.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (12942-1) - UMT - PL - CD - CD-105 - SIM -  - DIS