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| Registros recuperados : 3.347 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
19/06/1998 |
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Data da última atualização: |
11/07/2007 |
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Autoria: |
VALERIO, J. R.; SOUZA, A. P. de. |
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Afiliação: |
EMBRAPA. Centro Nacional de Pesquisa de Gado de Corte (Campo Grande, MS). |
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Título: |
Screeming tropical forage grasses for resistance the spittlebugs (Homoptera: Cercopidae). |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: INTERNATIONAL GRASSLAND CONGRESS, 18., 1997, Winnipeg, Saskatoon. Proceedings... [S.l.: s.n., 1997?]. |
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Páginas: |
p. 13-15 / 13-16. |
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Idioma: |
Inglês |
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Notas: |
CNPGC. |
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Conteúdo: |
Spittlebugs are the most damaging pasture pests in tropical America where extensive monocultures of Signal grasses, especially Brachiaria decumbens cv. Basilisk, have favored the buildup of spittlebug populations. Under severe spittlebug attack, the entire above-ground portion of the plant dries and eventually dies, thereby reducing the carrying capacity of infested pastures. Host plant resistance is a low-cost method of controlling spittlebugs. High level of spittlebug resistance is found in the cultivar Marandu (B. brizantha), but it requires more fertile soils. Brachiaria gerrnoplasm is being screened for spittlebug resistance. In the present study, 30 introductions of Brachiaria were evaluated for resistance to the spittlebug Zulia entreriana, based on the parameters: nymphal survival and nymphal period. The introduction CIAT 16309, a B. brizantha, was the only one selected as resistant in this test. Other 424 introductions and hybrids have already been screened. As a result 23 introductions and seven hybrids were found resistant. |
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Palavras-Chave: |
Basilisk; Cigarrinha-das-pastagens; Marandu; Selection; Spittlebugs; Variedade resistante. |
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Thesagro: |
Brachiaria Brizantha; Brachiaria Decumbens; Pastagem; Seleção; Zulia Entreriana. |
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Thesaurus NAL: |
pest resistance. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01929naa a2200301 a 4500
001 1321509
005 2007-07-11
008 1997 bl uuuu u00u1 u #d
100 1 $aVALERIO, J. R.
245 $aScreeming tropical forage grasses for resistance the spittlebugs (Homoptera$bCercopidae).
260 $c1997
300 $ap. 13-15 / 13-16.
500 $aCNPGC.
520 $aSpittlebugs are the most damaging pasture pests in tropical America where extensive monocultures of Signal grasses, especially Brachiaria decumbens cv. Basilisk, have favored the buildup of spittlebug populations. Under severe spittlebug attack, the entire above-ground portion of the plant dries and eventually dies, thereby reducing the carrying capacity of infested pastures. Host plant resistance is a low-cost method of controlling spittlebugs. High level of spittlebug resistance is found in the cultivar Marandu (B. brizantha), but it requires more fertile soils. Brachiaria gerrnoplasm is being screened for spittlebug resistance. In the present study, 30 introductions of Brachiaria were evaluated for resistance to the spittlebug Zulia entreriana, based on the parameters: nymphal survival and nymphal period. The introduction CIAT 16309, a B. brizantha, was the only one selected as resistant in this test. Other 424 introductions and hybrids have already been screened. As a result 23 introductions and seven hybrids were found resistant.
650 $apest resistance
650 $aBrachiaria Brizantha
650 $aBrachiaria Decumbens
650 $aPastagem
650 $aSeleção
650 $aZulia Entreriana
653 $aBasilisk
653 $aCigarrinha-das-pastagens
653 $aMarandu
653 $aSelection
653 $aSpittlebugs
653 $aVariedade resistante
700 1 $aSOUZA, A. P. de
773 $tIn: INTERNATIONAL GRASSLAND CONGRESS, 18., 1997, Winnipeg, Saskatoon. Proceedings... [S.l.: s.n., 1997?].
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