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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
19/02/2021 |
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Data da última atualização: |
16/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARROS, J. A. R.; GUIMARÃES, M. J. M.; SIMOES, W. L.; MELO, N. F. de; ANGELOTTI, F. |
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Afiliação: |
Juliane Rafaele Alves Barros; Miguel Julio Machado Guimarães; WELSON LIMA SIMOES, CPATSA; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISLENE ANGELOTTI, CPATSA. |
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Título: |
Water restriction in different phenological stages and increased temperature affect cowpea production. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Ciência e Agrotecnologia, v. 45, e022120, 2021. |
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DOI: |
http://dx.doi.org/10.1590/1413-705420214502212 |
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Idioma: |
Inglês |
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Conteúdo: |
Water deficit and high temperatures are abiotic factors that most limit plant growth and development. However, its effects depend on crop development stage and on stress duration and intensity. Thus, the objective of was to evaluate the development of cowpea subjected to water restriction in different phenological stages and to increase in air temperature. The experiment was conducted with the cultivar ?Carijó?, in growth chambers, in a 4 x 3 x 2 factorial arrangement, corresponding to levels of water availability (25, 50, 75, and 100%,), phenological stages (vegetative, flowering and pod filling) and temperature regimes (T°1: 20-26-33 °C e T°2: 24.8-30.8-37.8 °C), respectively. Reduction of water availability in the vegetative and flowering stages caused decrease in grain production. The percentage of aborted flowers was higher in plants maintained under an increased temperature of +4.8 °C, with consequent reduction in grain production. Higher water availability values favored shoot and root dry mass production. Increase of 4.8 °C did not affect shoot and root dry mass but reduced water use efficiency by about 83%. The highest enzymatic activities of CAT, GPX and SOD were found in plants subjected to the temperature of +4.8 °C. Only APX showed lower enzymatic activity with increasing temperature. The cv. ?Carijó? is more sensitive to the 4.8 °C increase in air temperature than to water deficits. |
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Palavras-Chave: |
Aumento da temperatura; Estágios fenológicos; Restrição hídrica. |
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Thesagro: |
Feijão; Fenologia; Temperatura; Vigna Unguiculata. |
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Thesaurus Nal: |
Abiotic stress; Oxidative stress; Phenology. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221343/1/Water-restriction-in-different-2021.pdf
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Marc: |
LEADER 02342naa a2200301 a 4500
001 2130154
005 2021-12-16
008 2021 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1413-705420214502212$2DOI
100 1 $aBARROS, J. A. R.
245 $aWater restriction in different phenological stages and increased temperature affect cowpea production.$h[electronic resource]
260 $c2021
520 $aWater deficit and high temperatures are abiotic factors that most limit plant growth and development. However, its effects depend on crop development stage and on stress duration and intensity. Thus, the objective of was to evaluate the development of cowpea subjected to water restriction in different phenological stages and to increase in air temperature. The experiment was conducted with the cultivar ?Carijó?, in growth chambers, in a 4 x 3 x 2 factorial arrangement, corresponding to levels of water availability (25, 50, 75, and 100%,), phenological stages (vegetative, flowering and pod filling) and temperature regimes (T°1: 20-26-33 °C e T°2: 24.8-30.8-37.8 °C), respectively. Reduction of water availability in the vegetative and flowering stages caused decrease in grain production. The percentage of aborted flowers was higher in plants maintained under an increased temperature of +4.8 °C, with consequent reduction in grain production. Higher water availability values favored shoot and root dry mass production. Increase of 4.8 °C did not affect shoot and root dry mass but reduced water use efficiency by about 83%. The highest enzymatic activities of CAT, GPX and SOD were found in plants subjected to the temperature of +4.8 °C. Only APX showed lower enzymatic activity with increasing temperature. The cv. ?Carijó? is more sensitive to the 4.8 °C increase in air temperature than to water deficits.
650 $aAbiotic stress
650 $aOxidative stress
650 $aPhenology
650 $aFeijão
650 $aFenologia
650 $aTemperatura
650 $aVigna Unguiculata
653 $aAumento da temperatura
653 $aEstágios fenológicos
653 $aRestrição hídrica
700 1 $aGUIMARÃES, M. J. M.
700 1 $aSIMOES, W. L.
700 1 $aMELO, N. F. de
700 1 $aANGELOTTI, F.
773 $tCiência e Agrotecnologia$gv. 45, e022120, 2021.
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Embrapa Semiárido (CPATSA) |
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