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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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Data corrente: |
05/01/2000 |
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Data da última atualização: |
11/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARTINS, P. R.; PARENTONI, S. N.; LOPES, M. A.; PAIVA, E. |
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Afiliação: |
SIDNEY NETTO PARENTONI, CNPMS. |
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Título: |
Eficiência de índices fenotípicos de comprimento de raiz seminal na avaliação de plantas individuais de milho quanto a tolerância ao alumínio. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 34, n. 10. p. 1897-1904, out. 1999. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi testar a eficiencia do comprimento relativo de raiz seminal (CRRS) e do comprimento liquido de raiz seminal (CLRS) como indicadores fenotipicos quanto a tolerancia ao aluminio na avaliacao de plantas individuais de milho. Plantulas de genotipos tolerantes e suscetiveis ao Al foram submetidas a solucao nutritiva contendo nivel toxico deste elemento, por um periodo de sete dias, apos o qual, determinaram-se os valores de CRRS e CLRS. Os resultados obtidos quando se utilizaram valores medios para CRRS e CLRS mostraram que ambos os indices foram capazes de discriminar com eficiencia os materiais tolerantes dos suscetiveis. Entretanto, quando foram utilizados os valores de CRRS e CLrs obtidos a partir de plantas individuais, observou-se a existencia de plantas tolerantes com valores tipicos de plantas suscetiveis, o que indica que a avaliacao fenotipica de plantas individuais pelos dois indices esta sujeita a erros significativos, principalmente na caracterizacao de plantas suscetiveis. Portanto, em estudos para mapeamento de "quantitative trait loci" (QTLs) ligados a tolerancia ao Al, nos quais utilizam-se estes indices fenotipicos, o mais apropriado e avaliar familias F3, onde e possivel obter valores medios para CRRS e CLRS e utilizar estas medias para representar os valores fenotipicos das respectivas plantas F2. |
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Palavras-Chave: |
Aluminium; Aluminum toxicity; Avaliacao; Avaliacao de plantulas; Evaluation; Maize; Nutrient solution; Plantulas; Seedlings evaluation; Toxidez de aluminio. |
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Thesagro: |
Alumínio; Milho; Solução Nutritiva; Toxidez; Zea Mays. |
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Thesaurus Nal: |
seedlings; toxicity. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/16569/1/PAB97251.pdf
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Marc: |
LEADER 02400naa a2200361 a 4500
001 1483405
005 2021-12-11
008 1999 bl uuuu u00u1 u #d
100 1 $aMARTINS, P. R.
245 $aEficiência de índices fenotípicos de comprimento de raiz seminal na avaliação de plantas individuais de milho quanto a tolerância ao alumínio.
260 $c1999
520 $aO objetivo deste trabalho foi testar a eficiencia do comprimento relativo de raiz seminal (CRRS) e do comprimento liquido de raiz seminal (CLRS) como indicadores fenotipicos quanto a tolerancia ao aluminio na avaliacao de plantas individuais de milho. Plantulas de genotipos tolerantes e suscetiveis ao Al foram submetidas a solucao nutritiva contendo nivel toxico deste elemento, por um periodo de sete dias, apos o qual, determinaram-se os valores de CRRS e CLRS. Os resultados obtidos quando se utilizaram valores medios para CRRS e CLRS mostraram que ambos os indices foram capazes de discriminar com eficiencia os materiais tolerantes dos suscetiveis. Entretanto, quando foram utilizados os valores de CRRS e CLrs obtidos a partir de plantas individuais, observou-se a existencia de plantas tolerantes com valores tipicos de plantas suscetiveis, o que indica que a avaliacao fenotipica de plantas individuais pelos dois indices esta sujeita a erros significativos, principalmente na caracterizacao de plantas suscetiveis. Portanto, em estudos para mapeamento de "quantitative trait loci" (QTLs) ligados a tolerancia ao Al, nos quais utilizam-se estes indices fenotipicos, o mais apropriado e avaliar familias F3, onde e possivel obter valores medios para CRRS e CLRS e utilizar estas medias para representar os valores fenotipicos das respectivas plantas F2.
650 $aseedlings
650 $atoxicity
650 $aAlumínio
650 $aMilho
650 $aSolução Nutritiva
650 $aToxidez
650 $aZea Mays
653 $aAluminium
653 $aAluminum toxicity
653 $aAvaliacao
653 $aAvaliacao de plantulas
653 $aEvaluation
653 $aMaize
653 $aNutrient solution
653 $aPlantulas
653 $aSeedlings evaluation
653 $aToxidez de aluminio
700 1 $aPARENTONI, S. N.
700 1 $aLOPES, M. A.
700 1 $aPAIVA, E.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 34, n. 10. p. 1897-1904, out. 1999.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
21/10/2019 |
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Data da última atualização: |
21/10/2019 |
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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: |
PEDRI, E. C. M. de; HOOGERHEIDE, E. S. S.; TIAGO, A. V.; CARDOSO, E. dos S.; PINTO, J. M. A.; SANTOS, L. L.; YAMASHITA, O. M.; ROSSI, A. A. B. |
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Afiliação: |
ELIANE CRISTINA MORENO DE PEDRI, UNEMAT, Alta Floresta, MT; EULALIA SOLER SOBREIRA HOOGERHEIDE, CPAMT; AUANA VICENTE TIAGO, UNEMAT, Alta Floresta, MT; ELISA DOS SANTOS CARDOSO, UNEMAT, Alta Floresta, MT; JOYCE MENDES ANDRADE PINTO, CPAMT; L. L. SANTOS; OSCAR MITSUO YAMASHITA, UNEMAT, Alta Floresta, MT; ANA APARECIDA BANDINI ROSSI, UNEMAT, Alta Floresta, MT. |
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Título: |
Genetic diversity of cassava landraces cultivated in northern Mato Grosso State, Brazil, using microsatellite markers. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 18, n.3, gmr18135, 2019. gmr18315. |
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DOI: |
http://dx.doi.org/10.4238/gmr18315 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava (Manihot esculenta) is a traditional crop in tropical and subtropical regions that is used for human consumption and in animal feed. This studied cassava landraces cultivated in northern Mato Grosso State, Brazil, to detect the variability in family farms, aiming at the preservation and use potential of these genetic resources. A total of 120 M. esculenta individuals were evaluated at the rate of 40 per location (population), where each landrace was represented by 10 plants. The 14 microsatellite markers examined showed genetic diversity. The average polymorphic information content (PIC) was 0.621 and the average number of alleles per locus was seven. Genetic diversity parameters indicated that Ho was higher than He for the three populations, showing negative fixation indices and a lack of inbreeding. AMOVA revealed greater molecular variation within the populations (92%). Bayesian analysis and the UPGMA clustering method resulted in two main groups formed with the individuals distributed randomly; i.e., regardless of collection site (location). The gene flow found in this study is a consequence of the introduction and exchange of genetic material (landraces) performed by the farmers, who act on their farms as maintainers of local diversity. Manihot esculenta cultivation in northern Mato Grosso State ensure the on-farm conservation of genetic variability of the species and constitutes a source of genetic resources such as genes of resistance and adaptation, which can be exploited and utilized in breeding programs. MenosCassava (Manihot esculenta) is a traditional crop in tropical and subtropical regions that is used for human consumption and in animal feed. This studied cassava landraces cultivated in northern Mato Grosso State, Brazil, to detect the variability in family farms, aiming at the preservation and use potential of these genetic resources. A total of 120 M. esculenta individuals were evaluated at the rate of 40 per location (population), where each landrace was represented by 10 plants. The 14 microsatellite markers examined showed genetic diversity. The average polymorphic information content (PIC) was 0.621 and the average number of alleles per locus was seven. Genetic diversity parameters indicated that Ho was higher than He for the three populations, showing negative fixation indices and a lack of inbreeding. AMOVA revealed greater molecular variation within the populations (92%). Bayesian analysis and the UPGMA clustering method resulted in two main groups formed with the individuals distributed randomly; i.e., regardless of collection site (location). The gene flow found in this study is a consequence of the introduction and exchange of genetic material (landraces) performed by the farmers, who act on their farms as maintainers of local diversity. Manihot esculenta cultivation in northern Mato Grosso State ensure the on-farm conservation of genetic variability of the species and constitutes a source of genetic resources such as genes of resistance and adaptation, which can... Mostrar Tudo |
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Palavras-Chave: |
SSR. |
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Thesagro: |
Manihot Esculenta. |
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Thesaurus NAL: |
Cassava; Genetic variation; Manihot. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203235/1/2019-eulalia-hoogerheide-cassava-landraces-cultivated-northern-MT-using-microsatellite-markers.pdf
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Marc: |
LEADER 02408naa a2200277 a 4500
001 2113273
005 2019-10-21
008 2019 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4238/gmr18315$2DOI
100 1 $aPEDRI, E. C. M. de
245 $aGenetic diversity of cassava landraces cultivated in northern Mato Grosso State, Brazil, using microsatellite markers.$h[electronic resource]
260 $c2019
520 $aCassava (Manihot esculenta) is a traditional crop in tropical and subtropical regions that is used for human consumption and in animal feed. This studied cassava landraces cultivated in northern Mato Grosso State, Brazil, to detect the variability in family farms, aiming at the preservation and use potential of these genetic resources. A total of 120 M. esculenta individuals were evaluated at the rate of 40 per location (population), where each landrace was represented by 10 plants. The 14 microsatellite markers examined showed genetic diversity. The average polymorphic information content (PIC) was 0.621 and the average number of alleles per locus was seven. Genetic diversity parameters indicated that Ho was higher than He for the three populations, showing negative fixation indices and a lack of inbreeding. AMOVA revealed greater molecular variation within the populations (92%). Bayesian analysis and the UPGMA clustering method resulted in two main groups formed with the individuals distributed randomly; i.e., regardless of collection site (location). The gene flow found in this study is a consequence of the introduction and exchange of genetic material (landraces) performed by the farmers, who act on their farms as maintainers of local diversity. Manihot esculenta cultivation in northern Mato Grosso State ensure the on-farm conservation of genetic variability of the species and constitutes a source of genetic resources such as genes of resistance and adaptation, which can be exploited and utilized in breeding programs.
650 $aCassava
650 $aGenetic variation
650 $aManihot
650 $aManihot Esculenta
653 $aSSR
700 1 $aHOOGERHEIDE, E. S. S.
700 1 $aTIAGO, A. V.
700 1 $aCARDOSO, E. dos S.
700 1 $aPINTO, J. M. A.
700 1 $aSANTOS, L. L.
700 1 $aYAMASHITA, O. M.
700 1 $aROSSI, A. A. B.
773 $tGenetics and Molecular Research$gv. 18, n.3, gmr18135, 2019. gmr18315.
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Embrapa Agrossilvipastoril (CPAMT) |
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