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Registro Completo |
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Biblioteca(s): |
Embrapa Café; Embrapa Unidades Centrais. |
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Data corrente: |
27/05/2009 |
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Data da última atualização: |
16/03/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAPUCHO, A. S.; CAIXETA, E. T.; ZAMBOLIM, E. M.; ZAMBOLIM, L. |
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Afiliação: |
ALEXANDRE SANDRI CAPUCHO, UNIVERSIDADE FEDERAL DE VIÇOSA; EVELINE TEIXEIRA CAIXETA, SAPC; EUNIZE MACIEL ZAMBOLIM, UNIVERSIDADE FEDERAL DE VIÇOSA; LAÉRCIO ZAMBOLIM, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Herança da resistência do Híbrido de Timor UFV 443-03 à ferrugem-do-cafeeiro. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v.44, n. 3, p. 276-282, mar. 2009. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi caracterizar a herança da resistência do Híbrido de Timor UFV 443-03 à ferrugem-do-cafeeiro (Hemileia vastatrix). Para isso, a raça II e o patótipo 001 de ferrugem foram inoculados em 246 plantas da população F2, 115 plantas do retrocruzamento suscetível (RCS) e 87 plantas do retrocruzamento resistente (RCR), originadas do cruzamento entre o genótipo suscetível cv. Catuaí Amarelo IAC 64 e a fonte de resistência Híbrido de Timor UFV 443-03. Para ambos os inóculos, a cv. Catuaí Amarelo IAC 64 foi suscetível, enquanto o Híbrido de Timor UFV 443-03, a planta representante da geração F1 e as plantas do RCR foram resistentes. As plantas F2, quando inoculadas com a raça II, apresentaram dois padrões de segregação significativos: 15:1 e 61:3. A herança da resistência foi confirmada pela inoculação das plantas do RCS, que segregaram na proporção de 3:1, padrão esperado para herança condicionada por dois genes. A hipótese de segregação 7:1 para três genes foi rejeitada. Resultados semelhantes foram obtidos para o patótipo 001. Dois genes dominantes e independentes conferem a resistência genética do Híbrido de Timor UFV 443-03 à raça II e ao patótipo 001 de H. vastatrix. |
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Palavras-Chave: |
diseases resistance; genetic inheritance; herança genética; resistência a doenças; resistência vertical. |
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Thesagro: |
Coffea Arábica; Hemileia Vastatrix. |
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Thesaurus Nal: |
vertical resistance. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29638/1/Heranca-da-resistencia.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/28055/1/Heranca-da-resistencia.pdf
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Marc: |
LEADER 02017naa a2200253 a 4500
001 1881049
005 2011-03-16
008 2009 bl uuuu u00u1 u #d
100 1 $aCAPUCHO, A. S.
245 $aHerança da resistência do Híbrido de Timor UFV 443-03 à ferrugem-do-cafeeiro.
260 $c2009
520 $aO objetivo deste trabalho foi caracterizar a herança da resistência do Híbrido de Timor UFV 443-03 à ferrugem-do-cafeeiro (Hemileia vastatrix). Para isso, a raça II e o patótipo 001 de ferrugem foram inoculados em 246 plantas da população F2, 115 plantas do retrocruzamento suscetível (RCS) e 87 plantas do retrocruzamento resistente (RCR), originadas do cruzamento entre o genótipo suscetível cv. Catuaí Amarelo IAC 64 e a fonte de resistência Híbrido de Timor UFV 443-03. Para ambos os inóculos, a cv. Catuaí Amarelo IAC 64 foi suscetível, enquanto o Híbrido de Timor UFV 443-03, a planta representante da geração F1 e as plantas do RCR foram resistentes. As plantas F2, quando inoculadas com a raça II, apresentaram dois padrões de segregação significativos: 15:1 e 61:3. A herança da resistência foi confirmada pela inoculação das plantas do RCS, que segregaram na proporção de 3:1, padrão esperado para herança condicionada por dois genes. A hipótese de segregação 7:1 para três genes foi rejeitada. Resultados semelhantes foram obtidos para o patótipo 001. Dois genes dominantes e independentes conferem a resistência genética do Híbrido de Timor UFV 443-03 à raça II e ao patótipo 001 de H. vastatrix.
650 $avertical resistance
650 $aCoffea Arábica
650 $aHemileia Vastatrix
653 $adiseases resistance
653 $agenetic inheritance
653 $aherança genética
653 $aresistência a doenças
653 $aresistência vertical
700 1 $aCAIXETA, E. T.
700 1 $aZAMBOLIM, E. M.
700 1 $aZAMBOLIM, L.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv.44, n. 3, p. 276-282, mar. 2009.
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Registro original: |
Embrapa Café (CNPCa) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
07/03/2012 |
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Data da última atualização: |
12/04/2012 |
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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: |
LEMOS, N. G.; LUCCA e BRACCINI, A. de; ABDELNOOR, R. V.; OLIVEIRA, M. C. N. de; SUENAGA, K.; YAMANAKA, N. |
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Afiliação: |
Noelle Giacomini Lemos, UEM - JIRCAS; Alessandro de Lucca e Braccini, UEM; RICARDO VILELA ABDELNOOR, CNPSO; MARIA CRISTINA NEVES DE OLIVEIRA, CNPSO; Kazuhiro Suenaga, JIRCAS; Naoki Yamanaka, JIRCAS. |
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Título: |
Characterization of genes Rpp2, Rpp4, and Rpp5 for resistance to soybean rust. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Euphytica, Wageningen, v. 182, n. 1, p. 53-64, 2011. |
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DOI: |
10.1007/s10681-011-0465-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Asian rust, caused by the fungus Phakopsora pachyrhizi, is the most severe disease currently threatening soybean crops in Brazil. The development of resistant cultivars is a top priority. Genetic characterization of resistance genes is important for estimating the improvement when these genes are introduced into soybean plants and for planning breeding strategies against this disease. Here, we infected an F2 population of 140 plants derived from a cross between ?An-76?, a line carrying two resistance genes (Rpp2 and Rpp4), and ?Kinoshita?, a cultivar carrying Rpp5, with a Brazilian rust population. We scored six characters of rust resistance (lesion color [LC], frequency of lesions having uredinia [%LU], number of uredinia per lesion [NoU], frequency of open uredinia [%OU], sporulation level [SL], and incubation period [IP]) to identify the genetic contributions of the three genes to these characters. Furthermore, we selected genotypes carrying these three loci in homozygosis by marker-assisted selection and evaluated their genetic effect in comparison with their ancestors, An-76, PI230970, PI459025, Kinoshita and BRS184. All three genes contributed to the phenotypes of these characters in F2 population and when pyramided, they significantly contributed to increase the resistance in comparison to their ancestors. Rpp2, previously reported as being defeated by the same rust population, showed a large contribution to resistance, and its resistance allele seemed to be recessive. Rpp5 had the largest contribution among the three genes, especially to SL and NoU. Only Rpp5 showed a significant contribution to LC. No QTLs for IP were detected in the regions of the three genes. We consider that these genes could contribute differently to resistance to soybean rust, and that genetic background plays an important role in Rpp2 activity. All three loci together worked additively to increase resistance when they were pyramided in a single genotype indicating that the pyramiding strategy is one good breeding strategy to increase soybean rust resistance. MenosAsian rust, caused by the fungus Phakopsora pachyrhizi, is the most severe disease currently threatening soybean crops in Brazil. The development of resistant cultivars is a top priority. Genetic characterization of resistance genes is important for estimating the improvement when these genes are introduced into soybean plants and for planning breeding strategies against this disease. Here, we infected an F2 population of 140 plants derived from a cross between ?An-76?, a line carrying two resistance genes (Rpp2 and Rpp4), and ?Kinoshita?, a cultivar carrying Rpp5, with a Brazilian rust population. We scored six characters of rust resistance (lesion color [LC], frequency of lesions having uredinia [%LU], number of uredinia per lesion [NoU], frequency of open uredinia [%OU], sporulation level [SL], and incubation period [IP]) to identify the genetic contributions of the three genes to these characters. Furthermore, we selected genotypes carrying these three loci in homozygosis by marker-assisted selection and evaluated their genetic effect in comparison with their ancestors, An-76, PI230970, PI459025, Kinoshita and BRS184. All three genes contributed to the phenotypes of these characters in F2 population and when pyramided, they significantly contributed to increase the resistance in comparison to their ancestors. Rpp2, previously reported as being defeated by the same rust population, showed a large contribution to resistance, and its resistance allele seemed to be recessive... Mostrar Tudo |
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Palavras-Chave: |
Ferrugem asiática da soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02709naa a2200205 a 4500
001 1917892
005 2012-04-12
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1007/s10681-011-0465-3$2DOI
100 1 $aLEMOS, N. G.
245 $aCharacterization of genes Rpp2, Rpp4, and Rpp5 for resistance to soybean rust.$h[electronic resource]
260 $c2011
520 $aAsian rust, caused by the fungus Phakopsora pachyrhizi, is the most severe disease currently threatening soybean crops in Brazil. The development of resistant cultivars is a top priority. Genetic characterization of resistance genes is important for estimating the improvement when these genes are introduced into soybean plants and for planning breeding strategies against this disease. Here, we infected an F2 population of 140 plants derived from a cross between ?An-76?, a line carrying two resistance genes (Rpp2 and Rpp4), and ?Kinoshita?, a cultivar carrying Rpp5, with a Brazilian rust population. We scored six characters of rust resistance (lesion color [LC], frequency of lesions having uredinia [%LU], number of uredinia per lesion [NoU], frequency of open uredinia [%OU], sporulation level [SL], and incubation period [IP]) to identify the genetic contributions of the three genes to these characters. Furthermore, we selected genotypes carrying these three loci in homozygosis by marker-assisted selection and evaluated their genetic effect in comparison with their ancestors, An-76, PI230970, PI459025, Kinoshita and BRS184. All three genes contributed to the phenotypes of these characters in F2 population and when pyramided, they significantly contributed to increase the resistance in comparison to their ancestors. Rpp2, previously reported as being defeated by the same rust population, showed a large contribution to resistance, and its resistance allele seemed to be recessive. Rpp5 had the largest contribution among the three genes, especially to SL and NoU. Only Rpp5 showed a significant contribution to LC. No QTLs for IP were detected in the regions of the three genes. We consider that these genes could contribute differently to resistance to soybean rust, and that genetic background plays an important role in Rpp2 activity. All three loci together worked additively to increase resistance when they were pyramided in a single genotype indicating that the pyramiding strategy is one good breeding strategy to increase soybean rust resistance.
653 $aFerrugem asiática da soja
700 1 $aLUCCA e BRACCINI, A. de
700 1 $aABDELNOOR, R. V.
700 1 $aOLIVEIRA, M. C. N. de
700 1 $aSUENAGA, K.
700 1 $aYAMANAKA, N.
773 $tEuphytica, Wageningen$gv. 182, n. 1, p. 53-64, 2011.
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