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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
27/02/2024 |
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Data da última atualização: |
03/06/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARROS, J. R. A.; SANTOS, T. C. dos; SILVA, E. G. F.; SILVA, W. O. da; GUIMARÃES, M. J. M.; ANGELOTTI, F. |
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Afiliação: |
JULIANE RAFAELE ALVES BARROS, Foundation for the Support of Science and Technology of the State of Pernambuco, Recife, PE; TATIANE CEZARIO DOS SANTOS, State University of Feira de Santana, Feira de Santana, BA; ELIOENAI GOMES FREIRE SILVA; WESLLEY OLIVEIRA DA SILVA, State University of Feira de Santana, Feira de Santana, BA; MIGUEL JULIO MACHADO GUIMARÃES, Federal Institute of Education, Science and Technology of Maranhão, São Raimundo das Mangabeiras, MA; FRANCISLENE ANGELOTTI, CPATSA. |
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Título: |
Pollen viability, and the photosynthetic and enzymatic responses of cowpea (Vigna unguiculata (L.) Walp., Fabaceae) in the face of rising air temperature: a problem for food safety. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Agronomy, v. 14, 463, 2024. |
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DOI: |
https://doi.org/10.3390/agronomy14030463 |
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Idioma: |
Inglês |
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Conteúdo: |
Rising temperature affects agricultural production, causing food insecurity. Thus, the objective of this study was to evaluate how increased temperature influences pollen viability, photosynthetic and enzymatic responses, and their consequences on the final yield of cowpea cultivars. The cultivars BRS Acauã, BRS Guariba, BRS Gurguéia, and BRS Pajeú were used, kept in growth chambers under two temperature regimes: 24.8–30.8–37.8 ◦C and 20–26–33 ◦C. The cultivars BRS Acauã, BRS Guariba, and BRS Pajeú showed prolonged flowering and greater flower abortion, at 23.58%, 34.71%, and 25.55%, respectively, under an increase of 4.8 ◦C in temperature. This increase also reduced the viability of BRS Acauã and BRS Pajeú pollen by 34 and 7%, respectively. Heating increased stomatal opening and transpiration but reduced chlorophyll content. The enzymatic response varied according to cultivars and temperature. Changes in photosynthetic and enzymatic activities contribute to reducing pollen viability and productivity. BRS Acauã was the most affected, with an 82% reduction in the number of seeds and a 70% reduction in production. BRS Gurguéia maintained its production, even with an increase of 4.8 ◦C, and can be selected as a cultivar with the potential to tolerate high temperatures as it maintained pollen viability, with less flower abortion, with the synchrony of physiological and biochemical responses and, consequently, greater production. |
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Palavras-Chave: |
Atividade fisiológica; BRS Acauã; BRS Guariba; BRS Gurguéia; BRS Pajeú; Estresse oxidativo; Estresse por calor; Feijão-caupi; Temperatura do ar; Viabilidade do pollen. |
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Thesagro: |
Feijão; Produção Agrícola; Segurança Alimentar; Vigna Unguiculata. |
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Thesaurus Nal: |
Cowpeas; Food safety; Heat stress; Oxidative stress. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1162315/1/Pollen-Viability-and-the-Photosynthetic-and-Enzymatic-2024.pdf
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Marc: |
LEADER 02726naa a2200409 a 4500
001 2162315
005 2024-06-03
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/agronomy14030463$2DOI
100 1 $aBARROS, J. R. A.
245 $aPollen viability, and the photosynthetic and enzymatic responses of cowpea (Vigna unguiculata (L.) Walp., Fabaceae) in the face of rising air temperature$ba problem for food safety.$h[electronic resource]
260 $c2024
520 $aRising temperature affects agricultural production, causing food insecurity. Thus, the objective of this study was to evaluate how increased temperature influences pollen viability, photosynthetic and enzymatic responses, and their consequences on the final yield of cowpea cultivars. The cultivars BRS Acauã, BRS Guariba, BRS Gurguéia, and BRS Pajeú were used, kept in growth chambers under two temperature regimes: 24.8–30.8–37.8 ◦C and 20–26–33 ◦C. The cultivars BRS Acauã, BRS Guariba, and BRS Pajeú showed prolonged flowering and greater flower abortion, at 23.58%, 34.71%, and 25.55%, respectively, under an increase of 4.8 ◦C in temperature. This increase also reduced the viability of BRS Acauã and BRS Pajeú pollen by 34 and 7%, respectively. Heating increased stomatal opening and transpiration but reduced chlorophyll content. The enzymatic response varied according to cultivars and temperature. Changes in photosynthetic and enzymatic activities contribute to reducing pollen viability and productivity. BRS Acauã was the most affected, with an 82% reduction in the number of seeds and a 70% reduction in production. BRS Gurguéia maintained its production, even with an increase of 4.8 ◦C, and can be selected as a cultivar with the potential to tolerate high temperatures as it maintained pollen viability, with less flower abortion, with the synchrony of physiological and biochemical responses and, consequently, greater production.
650 $aCowpeas
650 $aFood safety
650 $aHeat stress
650 $aOxidative stress
650 $aFeijão
650 $aProdução Agrícola
650 $aSegurança Alimentar
650 $aVigna Unguiculata
653 $aAtividade fisiológica
653 $aBRS Acauã
653 $aBRS Guariba
653 $aBRS Gurguéia
653 $aBRS Pajeú
653 $aEstresse oxidativo
653 $aEstresse por calor
653 $aFeijão-caupi
653 $aTemperatura do ar
653 $aViabilidade do pollen
700 1 $aSANTOS, T. C. dos
700 1 $aSILVA, E. G. F.
700 1 $aSILVA, W. O. da
700 1 $aGUIMARÃES, M. J. M.
700 1 $aANGELOTTI, F.
773 $tAgronomy$gv. 14, 463, 2024.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Cutter |
Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
28/11/2017 |
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Data da última atualização: |
29/11/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SANTOS, M. R. A. dos; AGUIAR, C. B.; MENDES, A. M. |
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Afiliação: |
MAURICIO REGINALDO ALVES DOS SANTOS, CPAF-Rondonia. |
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Título: |
Dedifferentiation and growth of friable calluses from stems of Capsicum chinense cv. Airetama. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
International Journal of Development Research, v. 7, n. 6, p.13062-13066, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
Chili peppers belong to the genus Capsicum and have been studied for their bioactivity, provided by secondary metabolites, which can be used for medicinal and agricultural purposes. Some Capsicum species have been submitted to in vitro cultivation systems of cell suspensions, which have been largely reported as safe and standardized methods of production of secondary compounds. The objective of this study was to determine a protocol for the establishment of cell suspensions from stems of the cultivar C. chinense cv. Airetama. For this, it was necessary to determine the combinations and concentrations of growth regulators for callus induction and to study the growth pattern of the calluses with a focus on the deceleration phase. In this phase the callus cells must be subcultured in a liquid medium in order to establish cell suspension cultivations. Stem explants were inoculated into media supplemented with 2,4-D and BA. The proliferation of callus cells and their growth pattern were evaluated. The highest callus cell proliferation occurred with the combination of 18.10 µM 2,4-D + 2.22 µM BA. The calluses were friable and whitish and their growth pattern followed a sigmoid shape. The deceleration phase started on the 42nd day. |
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Palavras-Chave: |
Callogenesis; Growlh curve. |
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Thesaurus NAL: |
secondary metabolites. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/167695/1/2017-IJDR-Airetama.pdf
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Marc: |
LEADER 01829naa a2200181 a 4500
001 2080950
005 2017-11-29
008 2017 bl uuuu u00u1 u #d
100 1 $aSANTOS, M. R. A. dos
245 $aDedifferentiation and growth of friable calluses from stems of Capsicum chinense cv. Airetama.$h[electronic resource]
260 $c2017
520 $aChili peppers belong to the genus Capsicum and have been studied for their bioactivity, provided by secondary metabolites, which can be used for medicinal and agricultural purposes. Some Capsicum species have been submitted to in vitro cultivation systems of cell suspensions, which have been largely reported as safe and standardized methods of production of secondary compounds. The objective of this study was to determine a protocol for the establishment of cell suspensions from stems of the cultivar C. chinense cv. Airetama. For this, it was necessary to determine the combinations and concentrations of growth regulators for callus induction and to study the growth pattern of the calluses with a focus on the deceleration phase. In this phase the callus cells must be subcultured in a liquid medium in order to establish cell suspension cultivations. Stem explants were inoculated into media supplemented with 2,4-D and BA. The proliferation of callus cells and their growth pattern were evaluated. The highest callus cell proliferation occurred with the combination of 18.10 µM 2,4-D + 2.22 µM BA. The calluses were friable and whitish and their growth pattern followed a sigmoid shape. The deceleration phase started on the 42nd day.
650 $asecondary metabolites
653 $aCallogenesis
653 $aGrowlh curve
700 1 $aAGUIAR, C. B.
700 1 $aMENDES, A. M.
773 $tInternational Journal of Development Research$gv. 7, n. 6, p.13062-13066, 2017.
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Embrapa Rondônia (CPAF-RO) |
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