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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
16/04/1997 |
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Data da última atualização: |
16/04/1997 |
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Autoria: |
LOPEZ, F. B.; SETTER, T. L.; McDAVID, C. R. |
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Título: |
Carbon dioxide and light responses of photosynthesis in cowpea and pigeonpea during water deficit and recovery. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Plant Physiology, v. 85, n. 4, p. 990-995, 1987. |
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Idioma: |
Inglês |
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Conteúdo: |
Greenhouse-grown pigeonpea (Cajanus cajan, [L.] Millsp.; cultivar UW-10) and cowpea (Vigna unguiculata [L.] Walp.; cultivar California No. 5) were well-watered (control) or subjected to low water potential by withholding water to compare their modes of adaptation to water-limited conditions. Leaf CO2 exchange rate (CER), leaf diffusive conductance to CO2 (gL), and CO2 concentration in the leaf intercellular air space (Ci) were determined at various CO2 concentrations and photon flux densities (PFD) of photosynthetically active radiation (400 to 700 nanometer). In cowpea, gL declined to less than 15% of controls and total water potential (Ww) at midafternoon declined to -0.8 megapascal after 5 days of withholding water, whereas gL in pigeonpea was about 40% ofcontrols even though midafternoon Ww was -1.9 megapascal. After 8 days of withholding water Ww at midafternoon declinet to -0.9 and -2.4 megapascals in cowpea and pigeonpea, respectively. The solute component of water potential (Ww) decreased substantially less in cowpea than pigeonpea. Photosynthetic CER at saturation photon flux density (PFD) and ambient external CO2 concentration (360 microliters per liter) on day 5 of withholding decreased by 83 and 55% in cowpea and pigeonpea, respectively. |
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Palavras-Chave: |
Caupi; Cowpea; Deficit hidrico. |
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Thesagro: |
Cajanus Cajan; Fotossíntese; Guandu; Vigna Unguiculata. |
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Thesaurus Nal: |
photosynthesis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01937naa a2200241 a 4500
001 1052519
005 1997-04-16
008 1987 bl --- 0-- u #d
100 1 $aLOPEZ, F. B.
245 $aCarbon dioxide and light responses of photosynthesis in cowpea and pigeonpea during water deficit and recovery.
260 $c1987
520 $aGreenhouse-grown pigeonpea (Cajanus cajan, [L.] Millsp.; cultivar UW-10) and cowpea (Vigna unguiculata [L.] Walp.; cultivar California No. 5) were well-watered (control) or subjected to low water potential by withholding water to compare their modes of adaptation to water-limited conditions. Leaf CO2 exchange rate (CER), leaf diffusive conductance to CO2 (gL), and CO2 concentration in the leaf intercellular air space (Ci) were determined at various CO2 concentrations and photon flux densities (PFD) of photosynthetically active radiation (400 to 700 nanometer). In cowpea, gL declined to less than 15% of controls and total water potential (Ww) at midafternoon declined to -0.8 megapascal after 5 days of withholding water, whereas gL in pigeonpea was about 40% ofcontrols even though midafternoon Ww was -1.9 megapascal. After 8 days of withholding water Ww at midafternoon declinet to -0.9 and -2.4 megapascals in cowpea and pigeonpea, respectively. The solute component of water potential (Ww) decreased substantially less in cowpea than pigeonpea. Photosynthetic CER at saturation photon flux density (PFD) and ambient external CO2 concentration (360 microliters per liter) on day 5 of withholding decreased by 83 and 55% in cowpea and pigeonpea, respectively.
650 $aphotosynthesis
650 $aCajanus Cajan
650 $aFotossíntese
650 $aGuandu
650 $aVigna Unguiculata
653 $aCaupi
653 $aCowpea
653 $aDeficit hidrico
700 1 $aSETTER, T. L.
700 1 $aMcDAVID, C. R.
773 $tPlant Physiology$gv. 85, n. 4, p. 990-995, 1987.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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| Registros recuperados : 11 | |
| 6. |  | ALVES, A.; FREGENE, M.; SETTER, T.; DUQUE, L.; FERGUSON, M.; MKAMILO, G. Identifying the physiological and genetic traits related to drought tolerance mechanisms in cassava. In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 142. S10-6.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
|   |
| 7. | | ALVES, A.; SETTER, T.; FREGENE, M.; FERGUSON, M.; DUQUE, L.; MUTEGI, R.; MKAMILO, G. Traits related to drought tolerance mechanisms in cassava. In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 53.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 8. | | MUTEGI, R.; FERGUSON, M.; MAASS, B. L.; MKAMILO, G.; KAMAU, J.; ADJEBENG-DANQUAH, J.; ALVES, A.; SETTER, T.; FREGENE, M. Field evaluation of cassava varieties under drought stress in Kenia, Tanzania and Ghana. In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 54.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 9. | | MUTEGI, R.; FERGUSON, M.; MAASS, B. L.; MKAMILO, G.; KAMAU, J.; ADJEBENG-DANQUAH, J.; ALVES, A.; SETTER, T.; FREGENE, M. Field evaluation of cassava varieties under drought stress in Kenya, Tanzania and Ghana. In: SCIENTIFIC MEETING OF THE GLOBAL CASSAVA PARTNERSHIP, 1., 2008, Ghent. Cassava: meeting the challenges of the new millennium. Ghent:: IPBO, 2008. p. 148. SP10-07.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 10. | | ALVES, A. A. C.; FREGENE, M.; FERGUSON, M.; SETTER, T.; CEBALLOS, H.; MKAMILO, G.; KANJU, E.; OSEI, C.; SOUZA, A.; RODRÍGUEZ, M. A. D.; SILVA, A. Identifying the physiological and genetic traits that make cassava one of the most drought tolerant crops. In: GENERATION CHALLENGE PROGRAMME. Project mid-year and final reports: competitive and commissioned projects: 2007. Mexico, DF: Generation Challenge Programme, 2007. p. 47-49.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
| |
| 11. | | ALVES, A.; DITA, M.; SOUZA, A.; SILVA, A. F.; FREGENE, M.; CEBALLOS, H.; SETTER, T.; DUQUE, L.; FERGUSON, M.; MUTEGI, R.; MKAMILO, G.; ADJEBENG-DANQUAH, J.; KAMAU, J. Identifying the physiological and genetic traits that make cassava one of the most drought tolerant crops. In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Project abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 30-31.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 11 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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