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 | Acesso ao texto completo restrito à biblioteca da Embrapa Tabuleiros Costeiros. Para informações adicionais entre em contato com cpatc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
03/12/2014 |
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Data da última atualização: |
03/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BELICUAS, P. R.; AGUIAR, A. M.; BENTO, D. A. V.; CAMARA, T. M. M.; SOUZA JUNIOR, C. L. de. |
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Afiliação: |
TASSIANO MAXWELL MARINHO CAMARA, CPATC. |
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Título: |
Inheritance of the stay-green trait in tropical maize. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Euphytica, Wageningen, Holanda, v. 196, n. 3,2014. |
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ISSN: |
0014-2336 |
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DOI: |
10.1007/s10681-014-1106-4 |
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Idioma: |
Português |
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Conteúdo: |
Stay-green maize genotypes have been associated with tolerance to biotic and abiotic stresses, including tolerance to drought, and to stalk and root lodging, but there is limited information on its inheritance. Thus, this research was conducted to study the inheritance of the stay-green trait using both conventional analysis and QTL mapping of the Design III in a tropical maize population developed from two inbred lines genetically divergent for this trait. Two-hundred and fifty F2 plants were genotyped with 177 microsatellite markers, and their backcrossed proge-nies to both parental inbreds were evaluated at three locations. Ten plants per plot were assessed 120 days after sowing and the plot means scores for stay-green, adjusted for days to silking emergence, were used for analysis. The additive variance was larger than the dominance variance, the genetic by location interaction variance presented a high magnitude, and the heritability coefficient on a plant-basis a low magnitude. Seventeen QTL were mapped, most of them were clustered on four chromosomes and accounted for by 73.08 % of the genetic variance. About half of the QTL interacted with location, and the average level of dominance was partial dominance. The additive effects were larger than the dominance effects; the latter were not unidirectional, so that heterosis could not be exploited in crosses. Procedures for marker-assisted selection to increase the level o fstay-green are discussed and an approach is suggested for using both stable and non-stable QTL in a marker-assisted backcross program. MenosStay-green maize genotypes have been associated with tolerance to biotic and abiotic stresses, including tolerance to drought, and to stalk and root lodging, but there is limited information on its inheritance. Thus, this research was conducted to study the inheritance of the stay-green trait using both conventional analysis and QTL mapping of the Design III in a tropical maize population developed from two inbred lines genetically divergent for this trait. Two-hundred and fifty F2 plants were genotyped with 177 microsatellite markers, and their backcrossed proge-nies to both parental inbreds were evaluated at three locations. Ten plants per plot were assessed 120 days after sowing and the plot means scores for stay-green, adjusted for days to silking emergence, were used for analysis. The additive variance was larger than the dominance variance, the genetic by location interaction variance presented a high magnitude, and the heritability coefficient on a plant-basis a low magnitude. Seventeen QTL were mapped, most of them were clustered on four chromosomes and accounted for by 73.08 % of the genetic variance. About half of the QTL interacted with location, and the average level of dominance was partial dominance. The additive effects were larger than the dominance effects; the latter were not unidirectional, so that heterosis could not be exploited in crosses. Procedures for marker-assisted selection to increase the level o fstay-green are discussed and an approach is sugge... Mostrar Tudo |
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Palavras-Chave: |
Maize. |
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Thesagro: |
Milho. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02188naa a2200217 a 4500
001 2001458
005 2014-12-03
008 2014 bl uuuu u00u1 u #d
022 $a0014-2336
024 7 $a10.1007/s10681-014-1106-4$2DOI
100 1 $aBELICUAS, P. R.
245 $aInheritance of the stay-green trait in tropical maize.$h[electronic resource]
260 $c2014
520 $aStay-green maize genotypes have been associated with tolerance to biotic and abiotic stresses, including tolerance to drought, and to stalk and root lodging, but there is limited information on its inheritance. Thus, this research was conducted to study the inheritance of the stay-green trait using both conventional analysis and QTL mapping of the Design III in a tropical maize population developed from two inbred lines genetically divergent for this trait. Two-hundred and fifty F2 plants were genotyped with 177 microsatellite markers, and their backcrossed proge-nies to both parental inbreds were evaluated at three locations. Ten plants per plot were assessed 120 days after sowing and the plot means scores for stay-green, adjusted for days to silking emergence, were used for analysis. The additive variance was larger than the dominance variance, the genetic by location interaction variance presented a high magnitude, and the heritability coefficient on a plant-basis a low magnitude. Seventeen QTL were mapped, most of them were clustered on four chromosomes and accounted for by 73.08 % of the genetic variance. About half of the QTL interacted with location, and the average level of dominance was partial dominance. The additive effects were larger than the dominance effects; the latter were not unidirectional, so that heterosis could not be exploited in crosses. Procedures for marker-assisted selection to increase the level o fstay-green are discussed and an approach is suggested for using both stable and non-stable QTL in a marker-assisted backcross program.
650 $aMilho
653 $aMaize
700 1 $aAGUIAR, A. M.
700 1 $aBENTO, D. A. V.
700 1 $aCAMARA, T. M. M.
700 1 $aSOUZA JUNIOR, C. L. de
773 $tEuphytica, Wageningen, Holanda$gv. 196, n. 3,2014.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
21/10/2019 |
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Data da última atualização: |
16/11/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, M. V. N. d'; OLIVEIRA, L. C. de; ACUÑA, M. |
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Afiliação: |
MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC; LUIS CLAUDIO DE OLIVEIRA, CPAF-AC; Mario Acuña, Instituto Federal de Educação do Acre (Ifac). |
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Título: |
Forest growth dynamics of managed forests in the Southwestern Brazilian Amazon. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, v. 39, e201902043, p. 362, 2019. Special issue. |
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ISSN: |
1809-3647 (print) / 1983-2605 (online) |
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Idioma: |
Inglês |
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Notas: |
Abstracts of the XXV IUFRO World Congress. |
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Conteúdo: |
The objective of this work was to present the growth forest dynamics results obtained in two sites located in Acre and Amazonas states in the southwestern Brazilian Amazon. |
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Palavras-Chave: |
Acre; Amazonas; Desempeño del crecimiento; Extração seletiva; Madera tropical; Manejo de impacto reduzido; Manejo florestal; Reduced Impact Logging; Selective logging; Southwestern Amazon; Sudoeste da Amazônia. |
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Thesagro: |
Administração Florestal; Desenvolvimento Florestal; Essência Florestal; Exploração Florestal; Extração da Madeira; Taxa de Crescimento. |
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Thesaurus NAL: |
Forest management; Growth performance; Tropical wood. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203281/1/26882.pdf
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Marc: |
LEADER 01457nam a2200397 a 4500
001 2113335
005 2023-11-16
008 2019 bl uuuu u00u1 u #d
022 $a1809-3647 (print) / 1983-2605 (online)
100 1 $aOLIVEIRA, M. V. N. d'
245 $aForest growth dynamics of managed forests in the Southwestern Brazilian Amazon.$h[electronic resource]
260 $aPesquisa Florestal Brasileira, v. 39, e201902043, p. 362, 2019. Special issue.$c2019
500 $aAbstracts of the XXV IUFRO World Congress.
520 $aThe objective of this work was to present the growth forest dynamics results obtained in two sites located in Acre and Amazonas states in the southwestern Brazilian Amazon.
650 $aForest management
650 $aGrowth performance
650 $aTropical wood
650 $aAdministração Florestal
650 $aDesenvolvimento Florestal
650 $aEssência Florestal
650 $aExploração Florestal
650 $aExtração da Madeira
650 $aTaxa de Crescimento
653 $aAcre
653 $aAmazonas
653 $aDesempeño del crecimiento
653 $aExtração seletiva
653 $aMadera tropical
653 $aManejo de impacto reduzido
653 $aManejo florestal
653 $aReduced Impact Logging
653 $aSelective logging
653 $aSouthwestern Amazon
653 $aSudoeste da Amazônia
700 1 $aOLIVEIRA, L. C. de
700 1 $aACUÑA, M.
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Embrapa Acre (CPAF-AC) |
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