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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
26/11/2009 |
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Data da última atualização: |
04/08/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOREIRA, J. U. V.; BENTO, D. A. V.; SOUZA, A. P. de; SOUZA JÚNIOR, C. L. de. |
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Afiliação: |
JOSE UBIRAJARA VIEIRA MOREIRA, CNPSo; DYEME ANTONIO VIEIRA BENTO, USP; ANETE PEREIRA DE SOUZA, USP; CLÁUDIO LOPES DE SOUZA JUNIOR, UNICAMP. |
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Título: |
QTL mapping for reaction to Phaeosphaeria leaf spot in a tropical maize population. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Theorethical and Applied Genetics, New York, v. 119, n. 8, p. 1361-1369, 2009. |
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ISSN: |
0040-5752 |
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DOI: |
10.1007/s00122-009-1140-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Phaeosphaeria leaf spot (PLS) is an important disease in tropical and subtropical maize (Zea mays, L.) growing areas, but there is limited information on its inheritance. Thus, this research was conducted to study the inheritance of the PLS disease in tropical maize by using QTL mapping and to assess the feasibility of using marker-assisted selection aimed to develop genotypes resistance to this disease. Highly susceptible L14-04B and highly resistant L08-05F inbred lines were crossed to develop an F(2) population. Two-hundred and fifty six F(2) plants were genotyped with 143 microsatellite markers and their F(2:3) progenies were evaluated at seven environments. Ten plants per plot were evaluated 30 days after silk emergence following a rating scale, and the plot means were used for analyses. The heritability coefficient on a progeny mean basis was high (91.37%), and six QTL were mapped, with one QTL on chromosomes 1, 3, 4, and 6, and two QTL on chromosome 8. The gene action of the QTL ranged from additive to partial dominance, and the average level of dominance was partial dominance; also a dominance x dominance epistatic effect was detected between the QTL mapped on chromosome 8. The phenotypic variance explained by each QTL ranged from 2.91 to 11.86%, and the joint QTL effects explained 41.62% of the phenotypic variance. The alleles conditioning resistance to PLS disease of all mapped QTL were in the resistant parental inbred L08-05F. Thus, these alleles could be transferred to other elite maize inbreds by marker-assisted backcross selection to develop hybrids resistant to PLS disease. MenosPhaeosphaeria leaf spot (PLS) is an important disease in tropical and subtropical maize (Zea mays, L.) growing areas, but there is limited information on its inheritance. Thus, this research was conducted to study the inheritance of the PLS disease in tropical maize by using QTL mapping and to assess the feasibility of using marker-assisted selection aimed to develop genotypes resistance to this disease. Highly susceptible L14-04B and highly resistant L08-05F inbred lines were crossed to develop an F(2) population. Two-hundred and fifty six F(2) plants were genotyped with 143 microsatellite markers and their F(2:3) progenies were evaluated at seven environments. Ten plants per plot were evaluated 30 days after silk emergence following a rating scale, and the plot means were used for analyses. The heritability coefficient on a progeny mean basis was high (91.37%), and six QTL were mapped, with one QTL on chromosomes 1, 3, 4, and 6, and two QTL on chromosome 8. The gene action of the QTL ranged from additive to partial dominance, and the average level of dominance was partial dominance; also a dominance x dominance epistatic effect was detected between the QTL mapped on chromosome 8. The phenotypic variance explained by each QTL ranged from 2.91 to 11.86%, and the joint QTL effects explained 41.62% of the phenotypic variance. The alleles conditioning resistance to PLS disease of all mapped QTL were in the resistant parental inbred L08-05F. Thus, these alleles could be transfer... Mostrar Tudo |
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Thesagro: |
Doença de planta; Genótipo; Milho; Seleção genética; Seleção genótipa; Zea Mays. |
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Thesaurus Nal: |
Corn; Foliar diseases; Marker-assisted selection; Plant diseases and disorders. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
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001 1576297
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008 2009 bl uuuu u00u1 u #d
022 $a0040-5752
024 7 $a10.1007/s00122-009-1140-0$2DOI
100 1 $aMOREIRA, J. U. V.
245 $aQTL mapping for reaction to Phaeosphaeria leaf spot in a tropical maize population.
260 $c2009
520 $aPhaeosphaeria leaf spot (PLS) is an important disease in tropical and subtropical maize (Zea mays, L.) growing areas, but there is limited information on its inheritance. Thus, this research was conducted to study the inheritance of the PLS disease in tropical maize by using QTL mapping and to assess the feasibility of using marker-assisted selection aimed to develop genotypes resistance to this disease. Highly susceptible L14-04B and highly resistant L08-05F inbred lines were crossed to develop an F(2) population. Two-hundred and fifty six F(2) plants were genotyped with 143 microsatellite markers and their F(2:3) progenies were evaluated at seven environments. Ten plants per plot were evaluated 30 days after silk emergence following a rating scale, and the plot means were used for analyses. The heritability coefficient on a progeny mean basis was high (91.37%), and six QTL were mapped, with one QTL on chromosomes 1, 3, 4, and 6, and two QTL on chromosome 8. The gene action of the QTL ranged from additive to partial dominance, and the average level of dominance was partial dominance; also a dominance x dominance epistatic effect was detected between the QTL mapped on chromosome 8. The phenotypic variance explained by each QTL ranged from 2.91 to 11.86%, and the joint QTL effects explained 41.62% of the phenotypic variance. The alleles conditioning resistance to PLS disease of all mapped QTL were in the resistant parental inbred L08-05F. Thus, these alleles could be transferred to other elite maize inbreds by marker-assisted backcross selection to develop hybrids resistant to PLS disease.
650 $aCorn
650 $aFoliar diseases
650 $aMarker-assisted selection
650 $aPlant diseases and disorders
650 $aDoença de planta
650 $aGenótipo
650 $aMilho
650 $aSeleção genética
650 $aSeleção genótipa
650 $aZea Mays
700 1 $aBENTO, D. A. V.
700 1 $aSOUZA, A. P. de
700 1 $aSOUZA JÚNIOR, C. L. de
773 $tTheorethical and Applied Genetics, New York$gv. 119, n. 8, p. 1361-1369, 2009.
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Embrapa Soja (CNPSO) |
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| Registros recuperados : 31 | |
| 10. |  | CEPEDA, M. C.; SOUZA JUNIOR, C. L. de; PANDEY, S.; LEON, L. N. Efeitos gênicos e oscilação genética associados a seleção recorrente intrapopulacional na população de milho SA3. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 8, p. 1585-93, ago. 2000. Título em inglês: Genic and genetic drift effects associated with intrapopulation recurrent selection in the SA3 maize population.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 15. | | PINTO, R. de M. C.; LIMA NETO, F. P.; SOUZA JUNIOR, C. L. de. Estimativa do número apropriado de progênies S1, para a seleção recorrente em milho. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 1, p. 63-73, jan. 2000. Título em inglês: Estimates of the number of S1 progenies for recurrent selection in maize.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 31 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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