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Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
08/09/2016 |
Data da última atualização: |
08/09/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ROCHA, G. A. F.; ALVES, D. P.; OLIVEIRA, J. C.; BROMMONSCHENKEL, S. H. |
Título: |
Identification and mapping of resistance genes to Phakopsora pachyrhizi in soybean (Glycine max L.) accession PI 594767-A. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Genetics and Molecular Research , Ribeirão Preto, SP, v. 15, n. 3, p. 1-15, 2016. |
Idioma: |
Inglês |
Conteúdo: |
he goal of this study was to study resistance inheritance in the soybean (Glycine max L.) accession PI 594767-A to the Phakopsora pachyrhizi isolate PPUFV02, and map the resistance gene(s) identified using microsatellite markers. Crosses between PI 594767-A and the susceptible cultivar ?Conquista? gave rise to the segregating subpopulations 26C-2 and 26C-5, which in the F2 generation were evaluated for their reactions to PPUFV02. In addition, analyses with microsatellite markers linked to the Rpp1-Rpp5 loci were also performed. The segregation pattern obtained in 26C-2 revealed that resistance was governed by a recessive gene; a 1:2:1 segregation pattern was observed in 26C-5, indicating control by a gene with partial dominance. This variability may have been caused because environmental conditions, particularly temperature, when 26C-5 was assessed were unfavorable for pathogen development, allowing the phenotypic expression of heterozygous alleles in PI 594767-A. A resistance gene was located in the soybean linkage group G, in the genomic region between Sct_187r2 and Sat_064 that contains the Rpp1 locus. Resistance in PI 594767-A is probably conferred by a new Rpp1 gene allele, because this accession has a haplotype for Sct_187r2 and Sat_064, which differs from haplotypes of accessions that also contain resistance alleles that map the Rpp1 locus. The use of Sct_187r2 and Sat_064 will facilitate the introgression of the resistance allele from PI 594767-A and its pyramiding with other resistance genes into genotypes with superior agronomic characteristics, in order to obtain cultivars with broad-spectrum resistance to P. pachyrhizi. Menoshe goal of this study was to study resistance inheritance in the soybean (Glycine max L.) accession PI 594767-A to the Phakopsora pachyrhizi isolate PPUFV02, and map the resistance gene(s) identified using microsatellite markers. Crosses between PI 594767-A and the susceptible cultivar ?Conquista? gave rise to the segregating subpopulations 26C-2 and 26C-5, which in the F2 generation were evaluated for their reactions to PPUFV02. In addition, analyses with microsatellite markers linked to the Rpp1-Rpp5 loci were also performed. The segregation pattern obtained in 26C-2 revealed that resistance was governed by a recessive gene; a 1:2:1 segregation pattern was observed in 26C-5, indicating control by a gene with partial dominance. This variability may have been caused because environmental conditions, particularly temperature, when 26C-5 was assessed were unfavorable for pathogen development, allowing the phenotypic expression of heterozygous alleles in PI 594767-A. A resistance gene was located in the soybean linkage group G, in the genomic region between Sct_187r2 and Sat_064 that contains the Rpp1 locus. Resistance in PI 594767-A is probably conferred by a new Rpp1 gene allele, because this accession has a haplotype for Sct_187r2 and Sat_064, which differs from haplotypes of accessions that also contain resistance alleles that map the Rpp1 locus. The use of Sct_187r2 and Sat_064 will facilitate the introgression of the resistance allele from PI 594767-A and its pyramiding w... Mostrar Tudo |
Palavras-Chave: |
Asian rust; Disease resistance; Genetic analysis; Genetic inheritance; Resistance genetic mapping. |
Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02386naa a2200217 a 4500 001 1125408 005 2016-09-08 008 2016 bl uuuu u00u1 u #d 100 1 $aROCHA, G. A. F. 245 $aIdentification and mapping of resistance genes to Phakopsora pachyrhizi in soybean (Glycine max L.) accession PI 594767-A.$h[electronic resource] 260 $c2016 520 $ahe goal of this study was to study resistance inheritance in the soybean (Glycine max L.) accession PI 594767-A to the Phakopsora pachyrhizi isolate PPUFV02, and map the resistance gene(s) identified using microsatellite markers. Crosses between PI 594767-A and the susceptible cultivar ?Conquista? gave rise to the segregating subpopulations 26C-2 and 26C-5, which in the F2 generation were evaluated for their reactions to PPUFV02. In addition, analyses with microsatellite markers linked to the Rpp1-Rpp5 loci were also performed. The segregation pattern obtained in 26C-2 revealed that resistance was governed by a recessive gene; a 1:2:1 segregation pattern was observed in 26C-5, indicating control by a gene with partial dominance. This variability may have been caused because environmental conditions, particularly temperature, when 26C-5 was assessed were unfavorable for pathogen development, allowing the phenotypic expression of heterozygous alleles in PI 594767-A. A resistance gene was located in the soybean linkage group G, in the genomic region between Sct_187r2 and Sat_064 that contains the Rpp1 locus. Resistance in PI 594767-A is probably conferred by a new Rpp1 gene allele, because this accession has a haplotype for Sct_187r2 and Sat_064, which differs from haplotypes of accessions that also contain resistance alleles that map the Rpp1 locus. The use of Sct_187r2 and Sat_064 will facilitate the introgression of the resistance allele from PI 594767-A and its pyramiding with other resistance genes into genotypes with superior agronomic characteristics, in order to obtain cultivars with broad-spectrum resistance to P. pachyrhizi. 653 $aAsian rust 653 $aDisease resistance 653 $aGenetic analysis 653 $aGenetic inheritance 653 $aResistance genetic mapping 700 1 $aALVES, D. P. 700 1 $aOLIVEIRA, J. C. 700 1 $aBROMMONSCHENKEL, S. H. 773 $tGenetics and Molecular Research , Ribeirão Preto, SP$gv. 15, n. 3, p. 1-15, 2016.
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Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
23/08/2001 |
Data da última atualização: |
23/08/2001 |
Autoria: |
TAGLIARI, P.S. |
Título: |
Agricultores familiares produzem a maca agroecologica. |
Ano de publicação: |
0 |
Fonte/Imprenta: |
Agropecuaria Catarinense, Florianopolis, v.14, n.2, p.26-31, jul. 2001. |
Idioma: |
Português |
Palavras-Chave: |
Agricultura familiar; Agroecologia; Maca. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00417naa a2200145 a 4500 001 1017789 005 2001-08-23 008 bl uuuu u00u1 u #d 100 1 $aTAGLIARI, P.S. 245 $aAgricultores familiares produzem a maca agroecologica. 260 $c0 653 $aAgricultura familiar 653 $aAgroecologia 653 $aMaca 773 $tAgropecuaria Catarinense, Florianopolis$gv.14, n.2, p.26-31, jul. 2001.
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