|
|
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Meio-Norte. |
Data corrente: |
30/11/2015 |
Data da última atualização: |
26/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MENDES, R. F. M.; BRITTO, F. B.; FREIRE FILHO, F. R.; LIMA, P. S. da C. |
Afiliação: |
R. F. M. Mendes, Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga, 64049-550, Teresina, PI; F. B. Britto, Universidade Federal do Piauí, Campus Universitário Ministro Petrônio Portella, Ininga, 64049-550, Teresina, PI; FRANCISCO RODRIGUES FREIRE FILHO, CPATU; PAULO SARMANHO DA COSTA LIMA, CPAMN. |
Título: |
Genetic variability of indigenous cowpea genotypes as determined using inter-simple sequence repeats markers. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
African Journal of Biotechnology, Nairobi, v. 14, n. 36, p. 2652-2661, Sep. 2015. |
DOI: |
10.5897/AJB2015.14671 |
Idioma: |
Inglês |
Conteúdo: |
Cowpea [Vigna unguiculata (L.) Walp.] is cultivated widely by small farmers in the semiarid region of Northeastern Brazil for subsistence purposes, especially to complement the family income. However, owing to the limited availability of water in this region, there is an urgent need for novel highly productive drought-tolerant cultivars. The aim of the present study was to establish the genetic variability of 14 cowpea populations (60 indigenous genotypes from 13 microregions of Rio Grande do Norte and 4 domesticated cultivars produced by Embrapa) using inter-simple sequence repeats (ISSR) markers. The set of 13 selected primers generated a total of 257 loci, 247 (96.11%) of which were polymorphic, with sizes ranging between 200 and 2000 bp. Genetic similarities between accessions were estimated from Jaccard coefficients and genetic relationships were determined from the dendrogram constructed using the unweighted pair group method with arithmetic average (UPGMA) technique. Bayesian statistics coupled with the Markov chain Monte Carlo technique was applied to determine population structure, while the genetic variability was established by analysis of molecular variance. UPGMA analysis allowed the separation of the genotypes into three groups, but no relationship between the genetic and geographical distances was observed. The fixation index was considered intermediary (FST = 0.0818), the average heterozygosity was low (HS = 0.39) and the coefficient of endogamy was high (f = 92.6%). The results show the presence of genetic diversity among the studied populations and revealed that such variability could be attributed mainly to intra-population variability (91.82%). MenosCowpea [Vigna unguiculata (L.) Walp.] is cultivated widely by small farmers in the semiarid region of Northeastern Brazil for subsistence purposes, especially to complement the family income. However, owing to the limited availability of water in this region, there is an urgent need for novel highly productive drought-tolerant cultivars. The aim of the present study was to establish the genetic variability of 14 cowpea populations (60 indigenous genotypes from 13 microregions of Rio Grande do Norte and 4 domesticated cultivars produced by Embrapa) using inter-simple sequence repeats (ISSR) markers. The set of 13 selected primers generated a total of 257 loci, 247 (96.11%) of which were polymorphic, with sizes ranging between 200 and 2000 bp. Genetic similarities between accessions were estimated from Jaccard coefficients and genetic relationships were determined from the dendrogram constructed using the unweighted pair group method with arithmetic average (UPGMA) technique. Bayesian statistics coupled with the Markov chain Monte Carlo technique was applied to determine population structure, while the genetic variability was established by analysis of molecular variance. UPGMA analysis allowed the separation of the genotypes into three groups, but no relationship between the genetic and geographical distances was observed. The fixation index was considered intermediary (FST = 0.0818), the average heterozygosity was low (HS = 0.39) and the coefficient of endogamy was high (f =... Mostrar Tudo |
Palavras-Chave: |
Diversidade genética; Drought stress; Estresse hídrico; Genetic diversity; Melhoramento de planta; Plant improvement. |
Thesagro: |
Feijão de corda; Vigna Unguiculata. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/134270/1/ArtigoSarmanhoAfricanJournalBiotechnology.pdf
|
Marc: |
LEADER 02529naa a2200265 a 4500 001 2030738 005 2022-05-26 008 2015 bl uuuu u00u1 u #d 024 7 $a10.5897/AJB2015.14671$2DOI 100 1 $aMENDES, R. F. M. 245 $aGenetic variability of indigenous cowpea genotypes as determined using inter-simple sequence repeats markers. 260 $c2015 520 $aCowpea [Vigna unguiculata (L.) Walp.] is cultivated widely by small farmers in the semiarid region of Northeastern Brazil for subsistence purposes, especially to complement the family income. However, owing to the limited availability of water in this region, there is an urgent need for novel highly productive drought-tolerant cultivars. The aim of the present study was to establish the genetic variability of 14 cowpea populations (60 indigenous genotypes from 13 microregions of Rio Grande do Norte and 4 domesticated cultivars produced by Embrapa) using inter-simple sequence repeats (ISSR) markers. The set of 13 selected primers generated a total of 257 loci, 247 (96.11%) of which were polymorphic, with sizes ranging between 200 and 2000 bp. Genetic similarities between accessions were estimated from Jaccard coefficients and genetic relationships were determined from the dendrogram constructed using the unweighted pair group method with arithmetic average (UPGMA) technique. Bayesian statistics coupled with the Markov chain Monte Carlo technique was applied to determine population structure, while the genetic variability was established by analysis of molecular variance. UPGMA analysis allowed the separation of the genotypes into three groups, but no relationship between the genetic and geographical distances was observed. The fixation index was considered intermediary (FST = 0.0818), the average heterozygosity was low (HS = 0.39) and the coefficient of endogamy was high (f = 92.6%). The results show the presence of genetic diversity among the studied populations and revealed that such variability could be attributed mainly to intra-population variability (91.82%). 650 $aFeijão de corda 650 $aVigna Unguiculata 653 $aDiversidade genética 653 $aDrought stress 653 $aEstresse hídrico 653 $aGenetic diversity 653 $aMelhoramento de planta 653 $aPlant improvement 700 1 $aBRITTO, F. B. 700 1 $aFREIRE FILHO, F. R. 700 1 $aLIMA, P. S. da C. 773 $tAfrican Journal of Biotechnology, Nairobi$gv. 14, n. 36, p. 2652-2661, Sep. 2015.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
19/03/2018 |
Data da última atualização: |
16/11/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SILVA, L. S. da; COSTA, F. de S.; OLIVEIRA, R. V. M. de. |
Afiliação: |
Laércio Silva da Silva, Fundação de Amparo a Pesquisa do Estado do Acre; FALBERNI DE SOUZA COSTA, CPAF-Acre; Railine Vitória Menezes de Oliveira, Universidade Federal do Acre (Ufac). |
Título: |
Relação dos teores de carbono e nitrogênio com a granulometria em sistemas de uso e manejo do solo no Estado do Acre. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 26., 2017, Rio Branco. Anais... Rio Branco: Ufac, 2018. |
Páginas: |
p. 431. |
ISBN: |
978-85-8236-078-1 |
Idioma: |
Português |
Conteúdo: |
A granulometria do solo pode informar sobre a proteção da sua matéria orgânica. Os Argissolos representam 38% da área do Estado do Acre, com predomínio dos Vermelhos Amarelos. Este trabalho apresenta informações adicionais da relação entre o COT e o NT e a granulometria de Argissolos em sistemas nativos (SN) e com uso do solo modificado (SM) no Acre. |
Palavras-Chave: |
Acre; Amazonia Occidental; Amazônia Ocidental; Fracción de arcilla; Fracción de arena; Fracción limo; Silte; Suelos arcillosos; Textura del suelo; Western Amazon. |
Thesagro: |
Areia; Argila; Argissolos; Granulometria; Solo. |
Thesaurus NAL: |
Clay fraction; Clay soils; Sand fraction; Silt fraction; Soil texture. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/174125/1/26530.pdf
|
Marc: |
LEADER 01529nam a2200397 a 4500 001 2089357 005 2023-11-16 008 2018 bl uuuu u00u1 u #d 020 $a978-85-8236-078-1 100 1 $aSILVA, L. S. da 245 $aRelação dos teores de carbono e nitrogênio com a granulometria em sistemas de uso e manejo do solo no Estado do Acre.$h[electronic resource] 260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 26., 2017, Rio Branco. Anais... Rio Branco: Ufac$c2018 300 $ap. 431. 520 $aA granulometria do solo pode informar sobre a proteção da sua matéria orgânica. Os Argissolos representam 38% da área do Estado do Acre, com predomínio dos Vermelhos Amarelos. Este trabalho apresenta informações adicionais da relação entre o COT e o NT e a granulometria de Argissolos em sistemas nativos (SN) e com uso do solo modificado (SM) no Acre. 650 $aClay fraction 650 $aClay soils 650 $aSand fraction 650 $aSilt fraction 650 $aSoil texture 650 $aAreia 650 $aArgila 650 $aArgissolos 650 $aGranulometria 650 $aSolo 653 $aAcre 653 $aAmazonia Occidental 653 $aAmazônia Ocidental 653 $aFracción de arcilla 653 $aFracción de arena 653 $aFracción limo 653 $aSilte 653 $aSuelos arcillosos 653 $aTextura del suelo 653 $aWestern Amazon 700 1 $aCOSTA, F. de S. 700 1 $aOLIVEIRA, R. V. M. de
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Acre (CPAF-AC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|