|
|
Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
23/06/2016 |
Data da última atualização: |
26/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SARMENTO, J. L. R.; TORRES, R. A.; SOUSA, W. H.; LOBO, R. N. B.; ALBUQUERQUE, L. G.; LOPES, P. S.; SANTOS, N. P. S.; BIGNARD, A. B. |
Afiliação: |
Universidade Federal do Piauí (UFPI) - Teresina, PI, Brasil; Universidade Federal de Viçosa (UFV) - Viçosa, MG, Brasil; EMEPA - João Pessoa, PB, Brasil; RAIMUNDO NONATO BRAGA LOBO, CNPC; Universidade Estadual Paulista (UNESP) - Jaboticabal, SP, Brasil; UFV - Viçosa, MG, Brazil; UFPI - Bom Jesus, PI, Brasil; UNESP - Jaboticabal, SP, Brasil. |
Título: |
Random regression models for the estimation of genetic and environmental covariance functions for growth traits in Santa Ines sheep. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 15, n. 2, Jun. 2016 |
DOI: |
10.4238/gmr.15025749 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Polynomial functions of different orders were used to model random effects associated with weight of Santa Ines sheep from birth to 196 days. Fixed effects included in the models were contemporary groups, age of ewe at lambing, and fourth-order Legendre polynomials for age to represent the average growth curve. In the random part, functions of different orders were included to model variances associated with direct additive and maternal genetic effects and with permanent environmental effects of the animal and mother. Residual variance was fitted by a sixth-order ordinary polynomial for age. The higher the order of the functions, the better the model fit the data. According to the Akaike information criterion and likelihood ratio test, a continuous function of order, five, five, seven, and three for direct additive genetic, maternal genetic, animal permanent environmental, and maternal permanent environmental effects (k = 5573), respectively, was sufficient to model changes in (co)variances with age. However, a more parsimonious model of order three, three, five, and three (k = 3353) was suggested based on Schwarz's Bayesian information criterion for the same effects. Since it was a more flexible model, model k = 5573 provided inconsistent genetic parameter estimates when compared to the biologically expected result. Predicted breeding values obtained with models k = 3353 and k = 5573 differed, especially at young ages. Model k = 3353 adequately fit changes in variances and covariances with time, and may be used to describe changes in variances with age in the Santa Ines sheep studied. MenosAbstract: Polynomial functions of different orders were used to model random effects associated with weight of Santa Ines sheep from birth to 196 days. Fixed effects included in the models were contemporary groups, age of ewe at lambing, and fourth-order Legendre polynomials for age to represent the average growth curve. In the random part, functions of different orders were included to model variances associated with direct additive and maternal genetic effects and with permanent environmental effects of the animal and mother. Residual variance was fitted by a sixth-order ordinary polynomial for age. The higher the order of the functions, the better the model fit the data. According to the Akaike information criterion and likelihood ratio test, a continuous function of order, five, five, seven, and three for direct additive genetic, maternal genetic, animal permanent environmental, and maternal permanent environmental effects (k = 5573), respectively, was sufficient to model changes in (co)variances with age. However, a more parsimonious model of order three, three, five, and three (k = 3353) was suggested based on Schwarz's Bayesian information criterion for the same effects. Since it was a more flexible model, model k = 5573 provided inconsistent genetic parameter estimates when compared to the biologically expected result. Predicted breeding values obtained with models k = 3353 and k = 5573 differed, especially at young ages. Model k = 3353 adequately fit changes in vari... Mostrar Tudo |
Palavras-Chave: |
Correlação genética; Genetic parameters; Growth curve; Legendre polynomials; Polinômio ordinário; Polinômios de Legendre; Raça Santa Inês. |
Thesagro: |
Curva de crescimento; Genética animal; Melhoramento genético animal; Ovino; Parâmetro genético. |
Thesaurus Nal: |
Genetic correlation; growth traits; Sheep. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/144731/1/CNPC-2016-Random.pdf
|
Marc: |
LEADER 02853naa a2200397 a 4500 001 2047794 005 2018-01-26 008 2016 bl uuuu u00u1 u #d 024 7 $a10.4238/gmr.15025749$2DOI 100 1 $aSARMENTO, J. L. R. 245 $aRandom regression models for the estimation of genetic and environmental covariance functions for growth traits in Santa Ines sheep.$h[electronic resource] 260 $c2016 520 $aAbstract: Polynomial functions of different orders were used to model random effects associated with weight of Santa Ines sheep from birth to 196 days. Fixed effects included in the models were contemporary groups, age of ewe at lambing, and fourth-order Legendre polynomials for age to represent the average growth curve. In the random part, functions of different orders were included to model variances associated with direct additive and maternal genetic effects and with permanent environmental effects of the animal and mother. Residual variance was fitted by a sixth-order ordinary polynomial for age. The higher the order of the functions, the better the model fit the data. According to the Akaike information criterion and likelihood ratio test, a continuous function of order, five, five, seven, and three for direct additive genetic, maternal genetic, animal permanent environmental, and maternal permanent environmental effects (k = 5573), respectively, was sufficient to model changes in (co)variances with age. However, a more parsimonious model of order three, three, five, and three (k = 3353) was suggested based on Schwarz's Bayesian information criterion for the same effects. Since it was a more flexible model, model k = 5573 provided inconsistent genetic parameter estimates when compared to the biologically expected result. Predicted breeding values obtained with models k = 3353 and k = 5573 differed, especially at young ages. Model k = 3353 adequately fit changes in variances and covariances with time, and may be used to describe changes in variances with age in the Santa Ines sheep studied. 650 $aGenetic correlation 650 $agrowth traits 650 $aSheep 650 $aCurva de crescimento 650 $aGenética animal 650 $aMelhoramento genético animal 650 $aOvino 650 $aParâmetro genético 653 $aCorrelação genética 653 $aGenetic parameters 653 $aGrowth curve 653 $aLegendre polynomials 653 $aPolinômio ordinário 653 $aPolinômios de Legendre 653 $aRaça Santa Inês 700 1 $aTORRES, R. A. 700 1 $aSOUSA, W. H. 700 1 $aLOBO, R. N. B. 700 1 $aALBUQUERQUE, L. G. 700 1 $aLOPES, P. S. 700 1 $aSANTOS, N. P. S. 700 1 $aBIGNARD, A. B. 773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 15, n. 2, Jun. 2016
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
08/09/2021 |
Data da última atualização: |
08/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
AVILA, R. G.; MAGALHAES, P. C.; SILVA, E. M. da; SOUZA, K. R. D. de; CAMPOS, C. N.; ALVARENGA, A. A. de; SOUZA, T. C. de. |
Afiliação: |
RONIEL GERALDO AVILA, Universidade Federal de Lavras; PAULO CESAR MAGALHAES, CNPMS; EDER MARCOS DA SILVA, Universidade Federal de Lavras; KAMILA REZENDE DAZIO DE SOUZA, Universidade Federal de Alfenas; CLEIDE NASCIMENTO CAMPOS, Universidade Federal de Lavras; AMAURI ALVES DE ALVARENGA, Universidae Federal de Lavras; THIAGO CORREA DE SOUZA, Universidade Federal de Alfenas. |
Título: |
Application of silicon to irrigated and water deficit sorghum plants increases yield via the regulation of primary, antioxidant, and osmoregulatory metabolism. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Agricultural Water Management, v. 255, 107004, 2021. |
Idioma: |
Inglês |
Conteúdo: |
Silicon (Si) supplementation is related to the induction of different tolerance mechanisms, leading to higher farm crop yields. The objective of this study was to elucidate the Si action mechanisms as a beneficial element in primary, antioxidant, and osmoregulatory metabolism in sorghum plants cultivated in soil under two different water availability conditions. Plants of the sorghum BRS332 genotype, sensitive to drought, were cultivated in pots in greenhouse conditions until harvest. At the pre-flowering stage, the following treatments were applied: field capacity (irrigated plants), water deficit, field capacity with Si application, and water deficit with Si application. Water deficit was conducted over 12 days, after which water potential and photosynthetic rate analyses, and leaf and root harvesting for biochemical analyses were performed. After the water deficit treatment, all plants were returned to normal irrigation until harvest, when the yield components were analyzed. Si supply occurred via fertilization at a concentration of 2 mM applied to the soil in a volume of 250 mL per day over 17 days, which corresponded to a supply on the five days preceding the beginning of stress, plus a 12-day supply during the stress period. Si alleviated the water deficit in plants, resulting in higher water potential, photosynthetic rate, grain biomass, and harvest index. Si increased the antioxidant enzymatic activity, and increased non-enzymatic antioxidants such as ascorbate and osmoregulatory substances, including proline, soluble and reducing sugars, and sucrose. Plants treated with Si showed lower damage to cell membranes (lower lipid peroxidation). The beneficial effects of Si also extended to plants that were not subjected to the water deficit treatment. Si uses the peroxide pathway as a signal to regulate metabolic responses. MenosSilicon (Si) supplementation is related to the induction of different tolerance mechanisms, leading to higher farm crop yields. The objective of this study was to elucidate the Si action mechanisms as a beneficial element in primary, antioxidant, and osmoregulatory metabolism in sorghum plants cultivated in soil under two different water availability conditions. Plants of the sorghum BRS332 genotype, sensitive to drought, were cultivated in pots in greenhouse conditions until harvest. At the pre-flowering stage, the following treatments were applied: field capacity (irrigated plants), water deficit, field capacity with Si application, and water deficit with Si application. Water deficit was conducted over 12 days, after which water potential and photosynthetic rate analyses, and leaf and root harvesting for biochemical analyses were performed. After the water deficit treatment, all plants were returned to normal irrigation until harvest, when the yield components were analyzed. Si supply occurred via fertilization at a concentration of 2 mM applied to the soil in a volume of 250 mL per day over 17 days, which corresponded to a supply on the five days preceding the beginning of stress, plus a 12-day supply during the stress period. Si alleviated the water deficit in plants, resulting in higher water potential, photosynthetic rate, grain biomass, and harvest index. Si increased the antioxidant enzymatic activity, and increased non-enzymatic antioxidants such as ascorbate and o... Mostrar Tudo |
Palavras-Chave: |
Peroxidação lipídica. |
Thesagro: |
Antioxidante; Biomassa; Carboidrato; Deficiência Hídrica; Grão; Peroxidase; Silício; Sorghum Bicolor. |
Thesaurus NAL: |
Biomass; Grain sorghum; Lipid peroxidation; Peroxidases. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02895naa a2200349 a 4500 001 2134119 005 2021-09-08 008 2021 bl uuuu u00u1 u #d 100 1 $aAVILA, R. G. 245 $aApplication of silicon to irrigated and water deficit sorghum plants increases yield via the regulation of primary, antioxidant, and osmoregulatory metabolism.$h[electronic resource] 260 $c2021 520 $aSilicon (Si) supplementation is related to the induction of different tolerance mechanisms, leading to higher farm crop yields. The objective of this study was to elucidate the Si action mechanisms as a beneficial element in primary, antioxidant, and osmoregulatory metabolism in sorghum plants cultivated in soil under two different water availability conditions. Plants of the sorghum BRS332 genotype, sensitive to drought, were cultivated in pots in greenhouse conditions until harvest. At the pre-flowering stage, the following treatments were applied: field capacity (irrigated plants), water deficit, field capacity with Si application, and water deficit with Si application. Water deficit was conducted over 12 days, after which water potential and photosynthetic rate analyses, and leaf and root harvesting for biochemical analyses were performed. After the water deficit treatment, all plants were returned to normal irrigation until harvest, when the yield components were analyzed. Si supply occurred via fertilization at a concentration of 2 mM applied to the soil in a volume of 250 mL per day over 17 days, which corresponded to a supply on the five days preceding the beginning of stress, plus a 12-day supply during the stress period. Si alleviated the water deficit in plants, resulting in higher water potential, photosynthetic rate, grain biomass, and harvest index. Si increased the antioxidant enzymatic activity, and increased non-enzymatic antioxidants such as ascorbate and osmoregulatory substances, including proline, soluble and reducing sugars, and sucrose. Plants treated with Si showed lower damage to cell membranes (lower lipid peroxidation). The beneficial effects of Si also extended to plants that were not subjected to the water deficit treatment. Si uses the peroxide pathway as a signal to regulate metabolic responses. 650 $aBiomass 650 $aGrain sorghum 650 $aLipid peroxidation 650 $aPeroxidases 650 $aAntioxidante 650 $aBiomassa 650 $aCarboidrato 650 $aDeficiência Hídrica 650 $aGrão 650 $aPeroxidase 650 $aSilício 650 $aSorghum Bicolor 653 $aPeroxidação lipídica 700 1 $aMAGALHAES, P. C. 700 1 $aSILVA, E. M. da 700 1 $aSOUZA, K. R. D. de 700 1 $aCAMPOS, C. N. 700 1 $aALVARENGA, A. A. de 700 1 $aSOUZA, T. C. de 773 $tAgricultural Water Management$gv. 255, 107004, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|