| |
|
|
| Registros recuperados : 162 | |
| Registros recuperados : 162 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Arroz e Feijão. |
|
Data corrente: |
08/09/1993 |
|
Data da última atualização: |
18/04/2024 |
|
Autoria: |
PEREIRA, P. A. A. |
|
Afiliação: |
PEDRO ANTONIO ARRAES PEREIRA, CNPAF. |
|
Título: |
Improvement of N2 fixation in common bean (Phaseolus vulgaris L.) at different levels of available phosphorus. |
|
Ano de publicação: |
1987 |
|
Fonte/Imprenta: |
Madison: University of Wisconsin, 1987. |
|
Páginas: |
151 p. |
|
Idioma: |
Inglês |
|
Notas: |
Tese Doutorado. |
|
Conteúdo: |
Phosphorus is one among several factors which affects N2 fixation, and besides N, a principal yield-limiting nutrient in many regions of the world. Since the host plant is an essential partner in symbiosis, knowledge of host genotypic variability for N2 fixation at different levels of P availability will be useful when breeding cultivars for enhanced N2 fixation. The objective of this study was to investigate the possibility of obtaining common bean (Phaseolus vulgaris L.) lines which can fix large amounts of N2 under different levels of available phosphorus. Experiments were conducted in a growth room using a sand-alumina system which was reproducible and well suited for studying N2 fixation under different levels of available P and in the field where a low-Nsoil was chosen. In the growth room studies, P availability strongly affected plant growth and traits related to N2 fixation. However, no beneficial response was detected on the growth of the 14 common bean lines with addition of mycorrhiza. Competition for P between nodules and pods was observed at latter stages of growth, although other factors also contributed to a decline in nitrogenase activity and reduced nodule dry weight during the reproductive stage. Nodules were the plant part richest in phosphorus, and nodule dry weight was affected more than nodule number by limiting P supply, perhaps indicating that growth of the nodules was the primary factor limiting N2 fixation at low P levels. Generally no significant interaction was detected for P levels..... MenosPhosphorus is one among several factors which affects N2 fixation, and besides N, a principal yield-limiting nutrient in many regions of the world. Since the host plant is an essential partner in symbiosis, knowledge of host genotypic variability for N2 fixation at different levels of P availability will be useful when breeding cultivars for enhanced N2 fixation. The objective of this study was to investigate the possibility of obtaining common bean (Phaseolus vulgaris L.) lines which can fix large amounts of N2 under different levels of available phosphorus. Experiments were conducted in a growth room using a sand-alumina system which was reproducible and well suited for studying N2 fixation under different levels of available P and in the field where a low-Nsoil was chosen. In the growth room studies, P availability strongly affected plant growth and traits related to N2 fixation. However, no beneficial response was detected on the growth of the 14 common bean lines with addition of mycorrhiza. Competition for P between nodules and pods was observed at latter stages of growth, although other factors also contributed to a decline in nitrogenase activity and reduced nodule dry weight during the reproductive stage. Nodules were the plant part richest in phosphorus, and nodule dry weight was affected more than nodule number by limiting P supply, perhaps indicating that growth of the nodules was the primary factor limiting N2 fixation at low P levels. Generally no significant i... Mostrar Tudo |
|
Palavras-Chave: |
FBN; Fixação; Fixacao biologica de nitrogenio; N; NBF; Nitrogen fixing bacteria; Nível; P. |
|
Thesagro: |
Adubação; Feijão; Fertilizante; Fósforo; Micorriza; Nitrogênio; Nutriente; Phaseolus Vulgaris. |
|
Thesaurus NAL: |
kidney beans; nitrogen; phosphorus. |
|
Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
|
Marc: |
LEADER 02465nam a2200361 a 4500
001 1191379
005 2024-04-18
008 1987 bl uuuu m 00u1 u #d
100 1 $aPEREIRA, P. A. A.
245 $aImprovement of N2 fixation in common bean (Phaseolus vulgaris L.) at different levels of available phosphorus.
260 $aMadison: University of Wisconsin$c1987
300 $a151 p.
500 $aTese Doutorado.
520 $aPhosphorus is one among several factors which affects N2 fixation, and besides N, a principal yield-limiting nutrient in many regions of the world. Since the host plant is an essential partner in symbiosis, knowledge of host genotypic variability for N2 fixation at different levels of P availability will be useful when breeding cultivars for enhanced N2 fixation. The objective of this study was to investigate the possibility of obtaining common bean (Phaseolus vulgaris L.) lines which can fix large amounts of N2 under different levels of available phosphorus. Experiments were conducted in a growth room using a sand-alumina system which was reproducible and well suited for studying N2 fixation under different levels of available P and in the field where a low-Nsoil was chosen. In the growth room studies, P availability strongly affected plant growth and traits related to N2 fixation. However, no beneficial response was detected on the growth of the 14 common bean lines with addition of mycorrhiza. Competition for P between nodules and pods was observed at latter stages of growth, although other factors also contributed to a decline in nitrogenase activity and reduced nodule dry weight during the reproductive stage. Nodules were the plant part richest in phosphorus, and nodule dry weight was affected more than nodule number by limiting P supply, perhaps indicating that growth of the nodules was the primary factor limiting N2 fixation at low P levels. Generally no significant interaction was detected for P levels.....
650 $akidney beans
650 $anitrogen
650 $aphosphorus
650 $aAdubação
650 $aFeijão
650 $aFertilizante
650 $aFósforo
650 $aMicorriza
650 $aNitrogênio
650 $aNutriente
650 $aPhaseolus Vulgaris
653 $aFBN
653 $aFixação
653 $aFixacao biologica de nitrogenio
653 $aN
653 $aNBF
653 $aNitrogen fixing bacteria
653 $aNível
653 $aP
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
