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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
10/05/2013 |
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Data da última atualização: |
16/07/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, C. A. F.; GAMA, R. N. C. de S. |
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Afiliação: |
CARLOS ANTONIO FERNANDES SANTOS, CPATSA; RENATA NATÁLIA CÂNDIDO DE SOUZA GAMA. |
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Título: |
An AFLP estimation of the outcrossing rate of Spondias tuberosa (Anacardiaceae), an endemic species to the Brazilian Semiarid region. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Revista de Biologia Tropical, v. 61, n. 2, p. 577-582, jun. 2013. |
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Idioma: |
Português |
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Conteúdo: |
The umbu tree (Spondias tuberosa) is one of the most important endemic species to the Brazilian tropical semiarid region. The umbu tree has edible fruits with a peculiar flavor that are consumed in natura or in a semi-industrialized form, such as jams, candies and juices. The majority of endemic species to Brazilian semiarid region have not been studied or sampled to form germplasm collections, which increases the risk of losing genetic variability of the adapted species to xerophytic conditions. The aim of this study was to estimate outcrossing rates in S. tuberosa using a multilocus mixed model in order to guide genetic resources and breeding programs of this species. DNA samples were extracted from 92 progenies of umbu trees, which were distributed among 12 families. These trees were planted by seed in 1991 in Petrolina, PE, Brazil. The experimental design was a randomized block, with a total of 42 progenies sampled in three regions. The experimental units were composed by five plants and five replications. The outcrossing rate was estimated by the multilocus model, which is available in the MLTR software, and was based on 17 polymorphic AFLP bands obtained from AAA_CTG and AAA_CTC primer combinations. The observed heterozygotes ranged from 0.147 to 0.499, with a maximum frequency estimated for the AAA_CTC_10 amplicon. The multilocus outcrossing estimation ( ) was 0.804±0.072, while the single-locus ( ) was 0.841±0.079, which suggests that S. tuberosa is predominantly an outcrossing species. The difference between and was -0.037±0.029, which indicates that biparental inbreeding was nearly absent. The mean inbreeding coefficient or fixation index ( ) among maternal plants was - 0.103±0.045, and the expected was 0.108, which indicates that there was no excess of heterozygotes in the maternal population. The outcrossing estimates obtained in the present study indicate that S. tuberosa is an pen-pollinated species. Biometrical models applied to this species should therefore take into account the deviation from random outcrossing to estimate genetic parameters and the constitution of broad germplasm samples to preserve the genetic variability of the species. Outcrossing rates based on AFLP and the mixed-mating model should be applied to other studies of plant species in the Brazilian semiarid region. MenosThe umbu tree (Spondias tuberosa) is one of the most important endemic species to the Brazilian tropical semiarid region. The umbu tree has edible fruits with a peculiar flavor that are consumed in natura or in a semi-industrialized form, such as jams, candies and juices. The majority of endemic species to Brazilian semiarid region have not been studied or sampled to form germplasm collections, which increases the risk of losing genetic variability of the adapted species to xerophytic conditions. The aim of this study was to estimate outcrossing rates in S. tuberosa using a multilocus mixed model in order to guide genetic resources and breeding programs of this species. DNA samples were extracted from 92 progenies of umbu trees, which were distributed among 12 families. These trees were planted by seed in 1991 in Petrolina, PE, Brazil. The experimental design was a randomized block, with a total of 42 progenies sampled in three regions. The experimental units were composed by five plants and five replications. The outcrossing rate was estimated by the multilocus model, which is available in the MLTR software, and was based on 17 polymorphic AFLP bands obtained from AAA_CTG and AAA_CTC primer combinations. The observed heterozygotes ranged from 0.147 to 0.499, with a maximum frequency estimated for the AAA_CTC_10 amplicon. The multilocus outcrossing estimation ( ) was 0.804±0.072, while the single-locus ( ) was 0.841±0.079, which suggests that S. tuberosa is predominantly an ... Mostrar Tudo |
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Palavras-Chave: |
AFLP; Genetic variability; Melhoramento genético; Planta nativa; Sistema reprodutivo; Spondia tuberosa; Variabilidade genética. |
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Thesagro: |
Caatinga; Umbu. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/82652/1/Carlos-Antonio-2013.pdf
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Marc: |
LEADER 03109naa a2200241 a 4500
001 1957559
005 2013-07-16
008 2013 bl uuuu u00u1 u #d
100 1 $aSANTOS, C. A. F.
245 $aAn AFLP estimation of the outcrossing rate of Spondias tuberosa (Anacardiaceae), an endemic species to the Brazilian Semiarid region.$h[electronic resource]
260 $c2013
520 $aThe umbu tree (Spondias tuberosa) is one of the most important endemic species to the Brazilian tropical semiarid region. The umbu tree has edible fruits with a peculiar flavor that are consumed in natura or in a semi-industrialized form, such as jams, candies and juices. The majority of endemic species to Brazilian semiarid region have not been studied or sampled to form germplasm collections, which increases the risk of losing genetic variability of the adapted species to xerophytic conditions. The aim of this study was to estimate outcrossing rates in S. tuberosa using a multilocus mixed model in order to guide genetic resources and breeding programs of this species. DNA samples were extracted from 92 progenies of umbu trees, which were distributed among 12 families. These trees were planted by seed in 1991 in Petrolina, PE, Brazil. The experimental design was a randomized block, with a total of 42 progenies sampled in three regions. The experimental units were composed by five plants and five replications. The outcrossing rate was estimated by the multilocus model, which is available in the MLTR software, and was based on 17 polymorphic AFLP bands obtained from AAA_CTG and AAA_CTC primer combinations. The observed heterozygotes ranged from 0.147 to 0.499, with a maximum frequency estimated for the AAA_CTC_10 amplicon. The multilocus outcrossing estimation ( ) was 0.804±0.072, while the single-locus ( ) was 0.841±0.079, which suggests that S. tuberosa is predominantly an outcrossing species. The difference between and was -0.037±0.029, which indicates that biparental inbreeding was nearly absent. The mean inbreeding coefficient or fixation index ( ) among maternal plants was - 0.103±0.045, and the expected was 0.108, which indicates that there was no excess of heterozygotes in the maternal population. The outcrossing estimates obtained in the present study indicate that S. tuberosa is an pen-pollinated species. Biometrical models applied to this species should therefore take into account the deviation from random outcrossing to estimate genetic parameters and the constitution of broad germplasm samples to preserve the genetic variability of the species. Outcrossing rates based on AFLP and the mixed-mating model should be applied to other studies of plant species in the Brazilian semiarid region.
650 $aCaatinga
650 $aUmbu
653 $aAFLP
653 $aGenetic variability
653 $aMelhoramento genético
653 $aPlanta nativa
653 $aSistema reprodutivo
653 $aSpondia tuberosa
653 $aVariabilidade genética
700 1 $aGAMA, R. N. C. de S.
773 $tRevista de Biologia Tropical$gv. 61, n. 2, p. 577-582, jun. 2013.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
15/04/2024 |
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Data da última atualização: |
15/04/2024 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, D. H. da C.; MONTEIRO, A. L. F.; NOGUEIRA, T. da S.; LANA, M. S.; SIQUEIRA, K. B.; GOLIATT, P. V. Z. C. |
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Afiliação: |
DARLAN HENRIQUE DA COSTA SILVA, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; ANNA LETÍCIA FRANCO MONTEIRO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; THALLYS DA SILVA NOGUEIRA, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; MANUELA SAMPAIO LANA, CNPGL; KENNYA BEATRIZ SIQUEIRA, CNPGL; PRISCILA VANESSA ZABALA CAPRILES GOLIATT, UNIVERSIDADE FEDERAL DE JUIZ DE FORA. |
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Título: |
Análise exploratória do interesse por marcas e produtos lácteos no Brasil. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
In: WORKSHOP DE INICIAÇÃO CIENTÍFICA DA EMBRAPA GADO DE LEITE, 28., 2023, Juiz de Fora. Anais... Juiz de Fora: Embrapa Gado de Leite, 2024. |
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Páginas: |
p. 10-12. |
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Série: |
(Embrapa Gado de Leite. Eventos Técnicos & Científicos, 1). |
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Idioma: |
Português |
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Notas: |
Pibic/Fapemig. |
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Conteúdo: |
A indústria de laticínios no Brasil tem enfrentado desafios significativos nos últimos tempos, reflexo de um consumidor cada vez mais informado e exigente. Diante disso, o objetivo central deste trabalho foi avaliar a preferência dos consumidores de lácteos por determinadas marcas e produtos disponíveis no mercado brasileiro. Para isso, foi empregada a ferramenta Observatório do Consumidor (OC), que analisou as postagens sobre lácteos no X/Twitter no Brasil no período de 07 de maio de 2020 a 03 de agosto de 2023. Os resultados indicaram que o consumidor brasileiro de lácteos demonstrou mais interesse por duas marcas: Nestle e Danone, evidenciando assim, a importância do valor criado pelas marcas. |
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Palavras-Chave: |
Inteligência artificial; Marca; Redes sociais. |
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Thesagro: |
Pesquisa de Mercado; Produto Derivado do Leite. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163619/1/Analise-exploratoria-do-interesse-por-marcas-e-produtos-lacteos.pdf
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Marc: |
LEADER 01638nam a2200265 a 4500
001 2163619
005 2024-04-15
008 2024 bl uuuu u00u1 u #d
100 1 $aSILVA, D. H. da C.
245 $aAnálise exploratória do interesse por marcas e produtos lácteos no Brasil.$h[electronic resource]
260 $aIn: WORKSHOP DE INICIAÇÃO CIENTÍFICA DA EMBRAPA GADO DE LEITE, 28., 2023, Juiz de Fora. Anais... Juiz de Fora: Embrapa Gado de Leite$c2024
300 $ap. 10-12.
490 $a(Embrapa Gado de Leite. Eventos Técnicos & Científicos, 1).
500 $aPibic/Fapemig.
520 $aA indústria de laticínios no Brasil tem enfrentado desafios significativos nos últimos tempos, reflexo de um consumidor cada vez mais informado e exigente. Diante disso, o objetivo central deste trabalho foi avaliar a preferência dos consumidores de lácteos por determinadas marcas e produtos disponíveis no mercado brasileiro. Para isso, foi empregada a ferramenta Observatório do Consumidor (OC), que analisou as postagens sobre lácteos no X/Twitter no Brasil no período de 07 de maio de 2020 a 03 de agosto de 2023. Os resultados indicaram que o consumidor brasileiro de lácteos demonstrou mais interesse por duas marcas: Nestle e Danone, evidenciando assim, a importância do valor criado pelas marcas.
650 $aPesquisa de Mercado
650 $aProduto Derivado do Leite
653 $aInteligência artificial
653 $aMarca
653 $aRedes sociais
700 1 $aMONTEIRO, A. L. F.
700 1 $aNOGUEIRA, T. da S.
700 1 $aLANA, M. S.
700 1 $aSIQUEIRA, K. B.
700 1 $aGOLIATT, P. V. Z. C.
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