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Registro Completo |
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
03/02/2010 |
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Data da última atualização: |
03/02/2010 |
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Autoria: |
SHAW, D. V.; GORDON, T. R.; LARSON, K. D.; GUBLER, W. D.; HANSEN, J.; KIRKPATRICK, S. C. |
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Título: |
Strawberry breeding improves genetic resistance to Verticillium wilt. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
California Agriculture, Oakland, v. 64, n. 1, p. 37-41, jan./mar. 2010. |
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Descrição Física: |
il., color. |
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Idioma: |
Inglês |
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Conteúdo: |
Since 1994, more than 480 genotypes from the UC strawberry breeding program have been screened for resistance to Verticillium dahliae Kleb., an important soil pathogen of strawberry. Genotypes for parents of subsequent generations have been chosen using a multiple-trait strategy that incorporates their Verticillium resistance rating. This selection strategy has increased resistance scores for the parents by 60%, and increased the percentage of moderately resistant genotypes from 35.0% in the original germplasm to 78.5% in those used as parents for the most recent crosses. Selection has reduced genetic variation for the resistance score, and genotypic coefficients of variation (GCV) decreased in the breeding population from 34.4% to 11.6% from 1994 to 2008. Inspection of genotypic scores suggests that the GCV change pattern may not be due to a scarcity of variation, but rather to limitations in the detection test. Our results suggest the need for broader testing of the more-resistant types identified in naturally infested soils and improved understanding of resistance mechanisms. Ultimately, this work seeks to provide a Verticillium-resistant cultivar to growers if access to effective soil fumigants becomes more limited. |
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Palavras-Chave: |
Melhoramento genético. |
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Thesagro: |
Doença de planta; Fruticultura; Fungo; Morango; Resistência; Variedade. |
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Thesaurus Nal: |
California; Verticillium wilt. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02045naa a2200301 a 4500
001 1632047
005 2010-02-03
008 2010 bl uuuu u00u1 u #d
100 1 $aSHAW, D. V.
245 $aStrawberry breeding improves genetic resistance to Verticillium wilt.
260 $c2010
300 $cil., color.
520 $aSince 1994, more than 480 genotypes from the UC strawberry breeding program have been screened for resistance to Verticillium dahliae Kleb., an important soil pathogen of strawberry. Genotypes for parents of subsequent generations have been chosen using a multiple-trait strategy that incorporates their Verticillium resistance rating. This selection strategy has increased resistance scores for the parents by 60%, and increased the percentage of moderately resistant genotypes from 35.0% in the original germplasm to 78.5% in those used as parents for the most recent crosses. Selection has reduced genetic variation for the resistance score, and genotypic coefficients of variation (GCV) decreased in the breeding population from 34.4% to 11.6% from 1994 to 2008. Inspection of genotypic scores suggests that the GCV change pattern may not be due to a scarcity of variation, but rather to limitations in the detection test. Our results suggest the need for broader testing of the more-resistant types identified in naturally infested soils and improved understanding of resistance mechanisms. Ultimately, this work seeks to provide a Verticillium-resistant cultivar to growers if access to effective soil fumigants becomes more limited.
650 $aCalifornia
650 $aVerticillium wilt
650 $aDoença de planta
650 $aFruticultura
650 $aFungo
650 $aMorango
650 $aResistência
650 $aVariedade
653 $aMelhoramento genético
700 1 $aGORDON, T. R.
700 1 $aLARSON, K. D.
700 1 $aGUBLER, W. D.
700 1 $aHANSEN, J.
700 1 $aKIRKPATRICK, S. C.
773 $tCalifornia Agriculture, Oakland$gv. 64, n. 1, p. 37-41, jan./mar. 2010.
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| 62. |  | SPERA, S. T.; SANTOS, H. P. dos; FONTANELI, R. S.; TOMM, G. O. Atributos físicos de um Hapludox em função de sistemas de produção integração lavoura-pecuária (ILP), sob plantio direto. Acta Scientiarum. Agronomy, Maringá, v. 32, n. 1, p. 37-44, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
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| 66. | | SPERA, S. T.; SANTOS, H. P. dos; TOMM, G. O.; KOCHHANN, R. A.; ÁVILA, A. Atributos físicos do solo em sistemas de manejo de solo e de rotação de culturas. Bragantia, Campinas, v. 68, n. 4, p. 1079-1093, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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| 68. | | CARDOSO, E. L.; SPERA, S. T.; PELLEGRIN, L. A.; OLIVEIRA, H. de; SPERA, M. R. N. Caracterizacao e potencial agricola dos solos do assentamento Urucum, Corumba-MS. In: REUNIAO BRASILEIRA DE MANEJO E CONSERVACAO DO SOLO E DA AGUA, 14., 2002, Cuiaba, MT. Anais... Cuiaba: SBCS: UFMT, 2002. 1 CD-ROM. Secao Autores.| Biblioteca(s): Embrapa Pantanal. |
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| 71. | | REATTO, A.; SPERA, S. T.; CORREIA, MARTINS, E. de S.; MILHOMEN, A. Caracterizacao de solos sob matas de galeria no Distrito Federal. In: CONGRESSO NACIONAL DE BOTANICA, 51., 2000, Brasilia, DF. Resumos.Brasilia: Sociedade Botanica do Brasil, 2000. p. 286.| Biblioteca(s): Embrapa Cerrados. |
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