| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
20/08/2003 |
|
Data da última atualização: |
25/08/2023 |
|
Autoria: |
BÄNZIGER, M.; COOPER, M. |
|
Título: |
Breeding for low input conditions and consequences for participatory plant breeding: examples from tropical maize and wheat. |
|
Ano de publicação: |
2001 |
|
Fonte/Imprenta: |
Euphytica, v. 122, n. 3, p. 503-519, 2001. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Participatory plant breeding (PPB) has been suggested as an effective alternative to formal plant breeding (FPB) as a breeding strategy for achieving productivity gains under low input conditions. With genetic progress through PPB and FPB being determined by 1he same genetic variables, the likelihood of success of PPB approaches applied in low input target conditions was analyzed using two case studies from FPB that have resulted in significant productivity gains under low input conditions: (I) breeding tropical maize for low input conditions by CIMMYT, and (2) breeding of spring wheat for the highly variable low input rainfed farming systems in Australia. In both cases, genetic improvement was an outcome of long-term investment in a sustained research effort aimed at understanding the detail of the important environmental constraints to productivity and the plant requirements for improved adaptation to the identified constraints. followed up by the design and continued evaluation of efficient breeding strategies. The breeding strategies used differed between the two case studies but were consistent in their attention to the key determinants of response to selection: (I) ensuring adequate sources of genetic variation and high selection pressures for the important traits at all stages of the breeding program, (2) use of experimental procedures to achieve high levels of heritability in the breeding trials. and (3) testing strategies that achieved a high genetic correlation between performance of germplasm in the breeding trials and under on-farm conditions. The implications of the outcomes from these FPB case studies for realizing the positive motivations for adopting PPB strategies are discussed with particular reference for low input target environment conditions. . MenosParticipatory plant breeding (PPB) has been suggested as an effective alternative to formal plant breeding (FPB) as a breeding strategy for achieving productivity gains under low input conditions. With genetic progress through PPB and FPB being determined by 1he same genetic variables, the likelihood of success of PPB approaches applied in low input target conditions was analyzed using two case studies from FPB that have resulted in significant productivity gains under low input conditions: (I) breeding tropical maize for low input conditions by CIMMYT, and (2) breeding of spring wheat for the highly variable low input rainfed farming systems in Australia. In both cases, genetic improvement was an outcome of long-term investment in a sustained research effort aimed at understanding the detail of the important environmental constraints to productivity and the plant requirements for improved adaptation to the identified constraints. followed up by the design and continued evaluation of efficient breeding strategies. The breeding strategies used differed between the two case studies but were consistent in their attention to the key determinants of response to selection: (I) ensuring adequate sources of genetic variation and high selection pressures for the important traits at all stages of the breeding program, (2) use of experimental procedures to achieve high levels of heritability in the breeding trials. and (3) testing strategies that achieved a high genetic correlation bet... Mostrar Tudo |
|
Palavras-Chave: |
Interação genótipo x ambiente; Melhoramento de plantas. |
|
Thesagro: |
Milho; Trigo. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02369naa a2200181 a 4500
001 1529612
005 2023-08-25
008 2001 bl uuuu u00u1 u #d
100 1 $aBÄNZIGER, M.
245 $aBreeding for low input conditions and consequences for participatory plant breeding$bexamples from tropical maize and wheat.$h[electronic resource]
260 $c2001
520 $aParticipatory plant breeding (PPB) has been suggested as an effective alternative to formal plant breeding (FPB) as a breeding strategy for achieving productivity gains under low input conditions. With genetic progress through PPB and FPB being determined by 1he same genetic variables, the likelihood of success of PPB approaches applied in low input target conditions was analyzed using two case studies from FPB that have resulted in significant productivity gains under low input conditions: (I) breeding tropical maize for low input conditions by CIMMYT, and (2) breeding of spring wheat for the highly variable low input rainfed farming systems in Australia. In both cases, genetic improvement was an outcome of long-term investment in a sustained research effort aimed at understanding the detail of the important environmental constraints to productivity and the plant requirements for improved adaptation to the identified constraints. followed up by the design and continued evaluation of efficient breeding strategies. The breeding strategies used differed between the two case studies but were consistent in their attention to the key determinants of response to selection: (I) ensuring adequate sources of genetic variation and high selection pressures for the important traits at all stages of the breeding program, (2) use of experimental procedures to achieve high levels of heritability in the breeding trials. and (3) testing strategies that achieved a high genetic correlation between performance of germplasm in the breeding trials and under on-farm conditions. The implications of the outcomes from these FPB case studies for realizing the positive motivations for adopting PPB strategies are discussed with particular reference for low input target environment conditions. .
650 $aMilho
650 $aTrigo
653 $aInteração genótipo x ambiente
653 $aMelhoramento de plantas
700 1 $aCOOPER, M.
773 $tEuphytica$gv. 122, n. 3, p. 503-519, 2001.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Roraima. |
|
Data corrente: |
02/03/2011 |
|
Data da última atualização: |
02/03/2011 |
|
Tipo da produção científica: |
Artigo de Divulgação na Mídia |
|
Autoria: |
COSTA, N. de L.; GIANLUPPI, V.; MORAES, A. de. |
|
Afiliação: |
NEWTON DE LUCENA COSTA, CPAF-RR; VICENTE GIANLUPPI, CPAF-RR; UFPR. |
|
Título: |
Morfogênese de Mesosetum chaseae nos Lavrados de Roraima |
|
Ano de publicação: |
2010 |
|
Fonte/Imprenta: |
Agrolink, 2010. Disponível em: . Acesso em: 01 nov. 2010. |
|
Idioma: |
Português |
|
Thesagro: |
Forragem. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/28959/1/Agrolink-2010-6.pdf
|
|
Marc: |
LEADER 00462nam a2200133 a 4500
001 1879760
005 2011-03-02
008 2010 bl uuuu u00u1 u #d
100 1 $aCOSTA, N. de L.
245 $aMorfogênese de Mesosetum chaseae nos Lavrados de Roraima
260 $aAgrolink, 2010. Disponível em: <http://www.agrolink.com.br/colunistas/morfogenese-de-mesosetum>. Acesso em: 01 nov. 2010.$c2010
650 $aForragem
700 1 $aGIANLUPPI, V.
700 1 $aMORAES, A. de
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Roraima (CPAF-RR) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
