| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
|
Data corrente: |
16/11/2017 |
|
Data da última atualização: |
23/01/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
KAHWAGE, P. R.; ESTEVES, S. N.; JACINTO, M. A. C.; BARIONI JUNIOR, W.; PEZZOPANE, J. R. M.; PANTOJA, M. H. de A.; BOSI, C.; MIGUEL, M. C. V.; MAHLMEISTER, K.; GARCIA, A. R. |
|
Afiliação: |
Priscila Reis Kahwage, UFPA; SERGIO NOVITA ESTEVES, CPPSE; MANUEL ANTONIO CHAGAS JACINTO, CPPSE; WALDOMIRO BARIONI JUNIOR, CPPSE; JOSE RICARDO MACEDO PEZZOPANE, CPPSE; Messy Hannear de Andrade Pantoja, UFPA; Cristian Bosi, Bolsista/Embrapa Pecuária Sudeste; Maria Carolina Villani Miguel, UNICEP; Kaue Mahlmeister, Bolsista/Embrapa Pecuária Sudeste; ALEXANDRE ROSSETTO GARCIA, CPPSE. |
|
Título: |
High systemic and testicular thermolytic efficiency during heat tolerance test reflects better semen quality in rams of tropical breeds. |
|
Ano de publicação: |
2017 |
|
Fonte/Imprenta: |
International Journal of Biometeorology, v. 61, p. 1819-1829, 2017. |
|
DOI: |
10.1007/s00484-017-1367-4 |
|
Idioma: |
Inglês |
|
Conteúdo: |
This study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1?animals maintained in the shade (11 to 12 h); period 2?animals exposed to sunlight (12 to 13 h); and period 3?animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period. The index of capacity of tolerance to insolation (ICTI), which indicates the animals? level of adaptability, was calculated for each animal. Semen quality and testicular parenchyma integrity were assessed before and after the thermal challenge. Statistical analyses were performed at 5% significance. In period 1, the variables had baseline values for both genotypes. In period 2, the variables involved in thermolysis significantly increased (P < 0.05), which matches a thermal discomfort situation. In period 3, the variables returned to baseline values and some values were lower than those in period 1. Semen quality and testicular parenchyma integrity suffered no negative effects with the thermal challenge. IRT ocular and IRT testicular were positively correlated (P < 0.05). It is concluded that MN and SIN rams had efficient thermolytic mechanisms that favor preserving gonadal functionality. The animals were considered resilient to a thermal challenge. In addition, infrared thermography was an efficient tool to verify body and testicular thermoregulation. MenosThis study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1?animals maintained in the shade (11 to 12 h); period 2?animals exposed to sunlight (12 to 13 h); and period 3?animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period. The index of capacity of tolerance to insolation (ICTI), which indicates the animals? level of adaptability, was calculated for each animal. Semen quality and testicular parenchyma integrity were assessed before and after the thermal challenge. Statistical analyses were performed at 5% significance. In period 1, the variables had baseline values for both genotypes. In period 2, the variables involved in thermolysis significantly increased (P < 0.05), which matches a thermal discomfort situation. In period 3, the variables returned to baseline values and some values were lower than those in period 1. Semen quality and testicular parenchyma integrity suffered no negative effects with the thermal challenge. IRT ocular and IRT testicular were positively correlated (P < 0.05). It is concluded that MN and SIN rams had efficient thermolytic mechanisms that favor preserving gonadal functionality. The animals were ... Mostrar Tudo |
|
Palavras-Chave: |
Infrared thermography. |
|
Thesaurus Nal: |
thermal stress; thermoregulation. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02546naa a2200277 a 4500
001 2079866
005 2018-01-23
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1007/s00484-017-1367-4$2DOI
100 1 $aKAHWAGE, P. R.
245 $aHigh systemic and testicular thermolytic efficiency during heat tolerance test reflects better semen quality in rams of tropical breeds.$h[electronic resource]
260 $c2017
520 $aThis study aimed to assess the capacity of Morada Nova (MN) and Santa Inês (SIN) rams to maintain body and testicular homeothermy under thermal challenge. For 5 days in the summer, 16 males (SIN = 7 and MN = 9) underwent a heat tolerance test, i.e., period 1?animals maintained in the shade (11 to 12 h); period 2?animals exposed to sunlight (12 to 13 h); and period 3?animals returned to the shade (13 to 14 h). The respiratory rate, heart rate, rectal temperature, and infrared surface temperatures (IRT) of the trunk, back, eyeball, and testicles were assessed in each period. The index of capacity of tolerance to insolation (ICTI), which indicates the animals? level of adaptability, was calculated for each animal. Semen quality and testicular parenchyma integrity were assessed before and after the thermal challenge. Statistical analyses were performed at 5% significance. In period 1, the variables had baseline values for both genotypes. In period 2, the variables involved in thermolysis significantly increased (P < 0.05), which matches a thermal discomfort situation. In period 3, the variables returned to baseline values and some values were lower than those in period 1. Semen quality and testicular parenchyma integrity suffered no negative effects with the thermal challenge. IRT ocular and IRT testicular were positively correlated (P < 0.05). It is concluded that MN and SIN rams had efficient thermolytic mechanisms that favor preserving gonadal functionality. The animals were considered resilient to a thermal challenge. In addition, infrared thermography was an efficient tool to verify body and testicular thermoregulation.
650 $athermal stress
650 $athermoregulation
653 $aInfrared thermography
700 1 $aESTEVES, S. N.
700 1 $aJACINTO, M. A. C.
700 1 $aBARIONI JUNIOR, W.
700 1 $aPEZZOPANE, J. R. M.
700 1 $aPANTOJA, M. H. de A.
700 1 $aBOSI, C.
700 1 $aMIGUEL, M. C. V.
700 1 $aMAHLMEISTER, K.
700 1 $aGARCIA, A. R.
773 $tInternational Journal of Biometeorology$gv. 61, p. 1819-1829, 2017.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Semiárido. |
|
Data corrente: |
14/06/2019 |
|
Data da última atualização: |
02/12/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
DANTAS, B. F.; MATIAS, J. R.; LOPES. A. P.; ARAGÃO, C. A. |
|
Afiliação: |
BARBARA FRANCA DANTAS, CPATSA; JANETE RODRIGUES MATIAS; ARMANDO PEREIRA LOPES; CARLOS ALBERTO ARAGÃO. |
|
Título: |
Physiological changes in seeds and seedlings of pumpkins submitted to salt stress. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Bioscience Journal, Uberlândia, v. 35, n. 3, p. 763-774, 2019. |
|
DOI: |
10.14393/BJ-v35n3a2019-41887 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Salinity is one of the most limiting environmental factors for plant growth in semi-arid regions.Excessofsalts reduces water potential, causes physiological drought and can influence germination and initial growth of plants. The objective of this work was to study physiological and metabolic changes in seeds and seedlings of pumpkin (Cucurbita pepo cultivars Caserta and Redonda and C. maxima cv. Coroa)in a saline condition of salt stress. Thus, we it was quantified germination parameters; seedlings growth; seeds and seedlings respiration; degradation of total soluble sugars, reducing sugars and total proteins in cotyledons and the activity ascorbate peroxidase (APX), glutathione-S-transferase (GST) and catalase (CAT) during germination and initial growth of the pumpkin species studied in saline conditions. The experimental design was totally randomized in a factorial scheme 6x3, with six electrical conductivities (0; 2; 4; 6; 8 e 10 dS.m-1) and three cultivars (Redonda, Caserta and Coroa). Salinity did not influence the rate of seed respiration during the germination, although seedlings respiration decreased, as well as its vigour. Total sugars were degraded, while there was accumulation of reducing sugars and proteins in cotyledons of germinating seeds in salt solutions. Increased electrical conductivity reduced APX activity in the embryo and CAT in cotyledons, but did not influence GST. Pumpkin seedlings showed low tolerance to salt stress |
|
Palavras-Chave: |
Estresse salino. |
|
Thesagro: |
Abóbora; Condutividade Eletrica; Cucúrbita Máxima; Cucúrbita Pepo; Cucurbitaceae; Hortaliça Cucurbitácea; Salinidade; Semente. |
|
Thesaurus NAL: |
Cucurbita; Pumpkins. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/198566/1/Dantas-et-al-2019-Bioscience-J.pdf
|
|
Marc: |
LEADER 02333naa a2200301 a 4500
001 2109869
005 2019-12-02
008 2019 bl uuuu u00u1 u #d
024 7 $a10.14393/BJ-v35n3a2019-41887$2DOI
100 1 $aDANTAS, B. F.
245 $aPhysiological changes in seeds and seedlings of pumpkins submitted to salt stress.$h[electronic resource]
260 $c2019
520 $aSalinity is one of the most limiting environmental factors for plant growth in semi-arid regions.Excessofsalts reduces water potential, causes physiological drought and can influence germination and initial growth of plants. The objective of this work was to study physiological and metabolic changes in seeds and seedlings of pumpkin (Cucurbita pepo cultivars Caserta and Redonda and C. maxima cv. Coroa)in a saline condition of salt stress. Thus, we it was quantified germination parameters; seedlings growth; seeds and seedlings respiration; degradation of total soluble sugars, reducing sugars and total proteins in cotyledons and the activity ascorbate peroxidase (APX), glutathione-S-transferase (GST) and catalase (CAT) during germination and initial growth of the pumpkin species studied in saline conditions. The experimental design was totally randomized in a factorial scheme 6x3, with six electrical conductivities (0; 2; 4; 6; 8 e 10 dS.m-1) and three cultivars (Redonda, Caserta and Coroa). Salinity did not influence the rate of seed respiration during the germination, although seedlings respiration decreased, as well as its vigour. Total sugars were degraded, while there was accumulation of reducing sugars and proteins in cotyledons of germinating seeds in salt solutions. Increased electrical conductivity reduced APX activity in the embryo and CAT in cotyledons, but did not influence GST. Pumpkin seedlings showed low tolerance to salt stress
650 $aCucurbita
650 $aPumpkins
650 $aAbóbora
650 $aCondutividade Eletrica
650 $aCucúrbita Máxima
650 $aCucúrbita Pepo
650 $aCucurbitaceae
650 $aHortaliça Cucurbitácea
650 $aSalinidade
650 $aSemente
653 $aEstresse salino
700 1 $aMATIAS, J. R.
700 1 $aLOPES. A. P.
700 1 $aARAGÃO, C. A.
773 $tBioscience Journal, Uberlândia$gv. 35, n. 3, p. 763-774, 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Semiárido (CPATSA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
