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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
20/04/1999 |
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Data da última atualização: |
20/04/1999 |
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Autoria: |
ARAUJO, A. P.; TEIXEIRA, M. G.; ALMEIDA, D. L. de. |
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Título: |
Variability of traits associated with phosphorus efficiency in wild and cultivated genotypes of common bean. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Plant and Soil, Netherlands, v. 203, p. 173-182, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
Genetic variation in plant growth under limited phosphorus (P) supply is necessary to obtain more productive cultivars on low P-available soils. Two pot experiments were conducted to evaluate the variability of some traits associated with efficiency of P absorption and utilization in wild and cultivated genotypes of common bean (Phaseolus vulgaris L.) under biological N2 fixation. At two P levels (20 and 80 mg P kg-1 soil, P1 and P2, respectively), 20 wild and 6 cultivated genotypes were grown in Experiment 1, and 4 wild and 27 cultivated genotypes were grown in Experiment 2. Plants were harvested at flowering, but in Experiment 1 wild accessions that did not flower were harvested at the beginning of leaf senescence. In Experiment 1, part of the genotypic variability of wild accessions was attributed to a less homogeneous ontogenetic stage at harvest, whereas in Experiment 2 some variation in biomass production was due to distinct phenologies of cultivated genotypes. Wild lines did not seem more tolerant to low P conditions, but the genotypic variation observed suggests these materials as a source of genetic diversity. Part of the variation in the root area and root efficiency ratio (total P content: root area) was compensatory, resulting in narrow genotypic differences in the total P content. The total P content and root efficiency ratio presented a wider amplitude of variation at P2 than at P1, and P uptake was more influenced by P supply than root production. Since the genotype x P level interaction was not significant for shoot biomass and shoot P concentration in Experiment 2, P utilization efficiency may be a useful selection criterion for cultivars between limited and adequate P supply. Within the sample of genetic variability for traits related to P efficiency among wild and cultivated genotypes of common bean. MenosGenetic variation in plant growth under limited phosphorus (P) supply is necessary to obtain more productive cultivars on low P-available soils. Two pot experiments were conducted to evaluate the variability of some traits associated with efficiency of P absorption and utilization in wild and cultivated genotypes of common bean (Phaseolus vulgaris L.) under biological N2 fixation. At two P levels (20 and 80 mg P kg-1 soil, P1 and P2, respectively), 20 wild and 6 cultivated genotypes were grown in Experiment 1, and 4 wild and 27 cultivated genotypes were grown in Experiment 2. Plants were harvested at flowering, but in Experiment 1 wild accessions that did not flower were harvested at the beginning of leaf senescence. In Experiment 1, part of the genotypic variability of wild accessions was attributed to a less homogeneous ontogenetic stage at harvest, whereas in Experiment 2 some variation in biomass production was due to distinct phenologies of cultivated genotypes. Wild lines did not seem more tolerant to low P conditions, but the genotypic variation observed suggests these materials as a source of genetic diversity. Part of the variation in the root area and root efficiency ratio (total P content: root area) was compensatory, resulting in narrow genotypic differences in the total P content. The total P content and root efficiency ratio presented a wider amplitude of variation at P2 than at P1, and P uptake was more influenced by P supply than root production. Since the ge... Mostrar Tudo |
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Palavras-Chave: |
Genotypes; N; Root nodulation. |
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Thesagro: |
Genética; Genótipo; Nitrogênio; Nodulação. |
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Thesaurus Nal: |
genetics; nitrogen. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02536naa a2200253 a 4500
001 1621040
005 1999-04-20
008 1998 bl uuuu u00u1 u #d
100 1 $aARAUJO, A. P.
245 $aVariability of traits associated with phosphorus efficiency in wild and cultivated genotypes of common bean.
260 $c1998
520 $aGenetic variation in plant growth under limited phosphorus (P) supply is necessary to obtain more productive cultivars on low P-available soils. Two pot experiments were conducted to evaluate the variability of some traits associated with efficiency of P absorption and utilization in wild and cultivated genotypes of common bean (Phaseolus vulgaris L.) under biological N2 fixation. At two P levels (20 and 80 mg P kg-1 soil, P1 and P2, respectively), 20 wild and 6 cultivated genotypes were grown in Experiment 1, and 4 wild and 27 cultivated genotypes were grown in Experiment 2. Plants were harvested at flowering, but in Experiment 1 wild accessions that did not flower were harvested at the beginning of leaf senescence. In Experiment 1, part of the genotypic variability of wild accessions was attributed to a less homogeneous ontogenetic stage at harvest, whereas in Experiment 2 some variation in biomass production was due to distinct phenologies of cultivated genotypes. Wild lines did not seem more tolerant to low P conditions, but the genotypic variation observed suggests these materials as a source of genetic diversity. Part of the variation in the root area and root efficiency ratio (total P content: root area) was compensatory, resulting in narrow genotypic differences in the total P content. The total P content and root efficiency ratio presented a wider amplitude of variation at P2 than at P1, and P uptake was more influenced by P supply than root production. Since the genotype x P level interaction was not significant for shoot biomass and shoot P concentration in Experiment 2, P utilization efficiency may be a useful selection criterion for cultivars between limited and adequate P supply. Within the sample of genetic variability for traits related to P efficiency among wild and cultivated genotypes of common bean.
650 $agenetics
650 $anitrogen
650 $aGenética
650 $aGenótipo
650 $aNitrogênio
650 $aNodulação
653 $aGenotypes
653 $aN
653 $aRoot nodulation
700 1 $aTEIXEIRA, M. G.
700 1 $aALMEIDA, D. L. de
773 $tPlant and Soil, Netherlands$gv. 203, p. 173-182, 1998.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 177 | |
| 27. |  | GOMES, A. A.; ARAUJO, A. P.; ROSSIELLO, R. O. P.; PIMENTEL, C. Acumulação de biomassa, características fisiológicas e rendimento de grãos em cultivares de feijoeiro irrigado e sob sequeiro. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 10, p. 1927-1937, out. 2000. Título em inglês: Accumulation of biomass, physiological characteristics and grain yield of bean cultivars under irrigated and dry regimes.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 28. | | REIS, V. M.; OLIVEIRA, R. P.; SCHULTZ, N.; ARAÚJO, A. P.; URQUIAGA, S. Análise de crescimento e acúmulo de nutrientes pela variedade RB92579 de cana-de-açúcar plantada em um argissolo com e sem inoculação e aplicação de N-fertilizante. IBEMPA CONFERENCE, 2.; NATIONAL MEETING OF THE SPANISH SOCIETY OF NITROGEN FIXATION (SEFIN), 14; LATIN AMERICAN MEETING ON RHIZOBIOLOGY (ALAR), 26.; SPANISH-PORTUGUESE CONGRESS ON NITROGEN FIXATION, 3., 2013, Sevilla. Microorganisms for future agriculture: [works and papers...]. Sevilla: Universidad Sevilla, 2013.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 32. | | ROSSIELLO, R. O. P.; ARAÚJO. A. P.; MANZATTO, C. V.; FERNANDES, M. S. Comparação dos métodos fotoelétrico e da interseção na determinação de área, comprimento e raio médio radicular. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 5, p. 633-638, maio 1995. Título em inglês: Comparison of the photoelectric and the intersection methods of estimating root area, root lengh and mean root radius.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 34. | | LEITE, R. de A.; ARAGÃO, O. O. da S.; ARAUJO, A. P.; JESUS, E. da C. Avaliação de substrato para cultivo do feijoeiro comum em vasos de Leonard. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 36., 2017, Belém, PA. Amazônia e seus solos: peculiaridades e potencialidades. Belém, PA: SBCS, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 39. | | FERNANDES, P. R. T.; MACHADO, P. P. da C.; STRALIOTTO, R.; ARAÚJO, A. P. Mensuração do tamanho de nódulos de cultivares de Feijoeiro através da análise digital de imagens. In: REUNIÃO BRASILEIRA DE CIÊNCIA DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa, MG: SBCS, 2012. FERTBIO 2012.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 40. | | FERREIRA, C. D.; LEITE, R. de A.; ARAUJO, A. P.; JESUS, E. da C. Crescimento do feijoeiro em solo esterilizado por autoclavagem. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 36., 2017, Belém, PA. Amazônia e seus solos: peculiaridades e potencialidades. Belém, PA: SBCS, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 177 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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