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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
11/02/2015 |
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Data da última atualização: |
11/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, T. L. P. O.; DESSAUNE, S. N.; MOREIRA, M. A.; BARROS, E. G. |
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Afiliação: |
THIAGO LIVIO PESSOA OLIV DE SOUZA, CNPAF; SUELEN NOGUEIRA DESSAUNE TAMEIRAO, CPAC; MAURILIO A. MOREIRA,, UNIVERSIDADE FEDERAL DE VIÇOSA; EVERALDO G. DE BARROS, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Soybean rust resistance sources and inheritance in the common bean (Phaseolus vulgaris L.). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 13, n. 3, p. 5626-5636, 2014. |
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DOI: |
http://dx.doi.org/10.4238/2014.July.25.18 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Soybean rust (SBR), caused by the fungus Phakopsora pachyrhizi, has been reported in common bean (Phaseolus vulgaris L.) cultivars and elite lines that were infected under controlled and natural field conditions in South Africa, the United States, Argentina, and Brazil. Although SBR is currently not a top priority problem for the common bean crop, many bean breeders are concerned about this disease because of the high severity and virulence diversity of P. pachyrhizi and its broad host range. In this study, a set of 44 P. vulgaris genotypes were tested for resistance to P. pachyrhizi; these genotypes included resistance sources to several fungal common bean diseases, carioca-, black- and red-seeded Brazilian cultivars, and elite lines that were developed by the main common bean breeding programs in Brazil. Twenty-four SBR resistance sources were identified. They presented the reddish-brown (RB) lesion type, characterizing resistance reactions. In addition to the RB lesion type, the PI181996 line presented the lowest disease severity mean score, considering its associated standard error value. For this reason, it was crossed with susceptible lines to study the inheritance of resistance. The results support the hypothesis that
resistance to SBR in PI181996 is monogenic and dominant. We propose that this SBR resistance gene, the first to be identified and characterized in common bean, might be designated as Pkp-1. |
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Thesagro: |
Feijão; Fungo; Melhoramento genético vegetal; Phakopsora pachyrhizi; Phaseolus vulgaris; Resistência genética; Variedade resistente. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02227naa a2200253 a 4500
001 2008508
005 2015-02-11
008 2014 bl --- 0-- u #d
024 7 $ahttp://dx.doi.org/10.4238/2014.July.25.18$2DOI
100 1 $aSOUZA, T. L. P. O.
245 $aSoybean rust resistance sources and inheritance in the common bean (Phaseolus vulgaris L.).
260 $c2014
520 $aAbstract: Soybean rust (SBR), caused by the fungus Phakopsora pachyrhizi, has been reported in common bean (Phaseolus vulgaris L.) cultivars and elite lines that were infected under controlled and natural field conditions in South Africa, the United States, Argentina, and Brazil. Although SBR is currently not a top priority problem for the common bean crop, many bean breeders are concerned about this disease because of the high severity and virulence diversity of P. pachyrhizi and its broad host range. In this study, a set of 44 P. vulgaris genotypes were tested for resistance to P. pachyrhizi; these genotypes included resistance sources to several fungal common bean diseases, carioca-, black- and red-seeded Brazilian cultivars, and elite lines that were developed by the main common bean breeding programs in Brazil. Twenty-four SBR resistance sources were identified. They presented the reddish-brown (RB) lesion type, characterizing resistance reactions. In addition to the RB lesion type, the PI181996 line presented the lowest disease severity mean score, considering its associated standard error value. For this reason, it was crossed with susceptible lines to study the inheritance of resistance. The results support the hypothesis that resistance to SBR in PI181996 is monogenic and dominant. We propose that this SBR resistance gene, the first to be identified and characterized in common bean, might be designated as Pkp-1.
650 $aFeijão
650 $aFungo
650 $aMelhoramento genético vegetal
650 $aPhakopsora pachyrhizi
650 $aPhaseolus vulgaris
650 $aResistência genética
650 $aVariedade resistente
700 1 $aDESSAUNE, S. N.
700 1 $aMOREIRA, M. A.
700 1 $aBARROS, E. G.
773 $tGenetics and Molecular Research$gv. 13, n. 3, p. 5626-5636, 2014.
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