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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Genetic control of resistance on Mangifera indica to Ceratocystis wilt.
Autores:  ARRIELA, D. A. A.
GUIMARÃES, L. M. da S.
RESENDE, M. D. V. de
LIMA NETO, F. P.
SILVA, D. F. S. H. S.
SIQUEIRA, D. L. de
ALFENAS, A. C.
Data:  2017-01-19
Ano:  2016
Palavras-chave:  Espécie exótica
Ceratocystis wilt
Manga
Doença de planta
Fungo
Mangifera indica
Plant diseases and disorders
Resumo:  Ceratocystis wilt, caused by Ceratocystis fimbriata is one of the most serious limiting factors for mango production in Brazil. Despite efforts in the selection and the identification of mango cultivars resistant to Ceratocystis wilt, the genetic basis of the resistance remains unknown. Therefore, the objective of this study was to understand the inheritance of resistance to C. fimbriata by artificial inoculations of the pathogen in progenies of six commercial varieties of mango using ?Tommy Atkins? as the male parent. The cultivars ?Keitt?, ?Palmer?, ?Tommy Atkins? and ?Van Dyke? were confirmed as moderately resistant, whereas ?Coquinho?, ?Espada? and ?Haden? were susceptible. The results of the inoculation on the progenies of these cultivars revealed that the resistance in mango is polygenic with a prevalence of genes expressing the effects of dominance and epistasis. The genetic gain with the selection of the 10 more resistant plants was 46%, which indicated a 46% reduction in disease severity. In general, a low frequency of the alleles favorable to disease resistance was observed in the population studied, which suggests the need for the introduction of new sources of genetic materials carrying the genes responsible for resistance.

2016
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  0304-4238

56300

http://www.alice.cnptia.embrapa.br/handle/doc/1061193

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/155901/1/Pinheiro-Neto.pdf

http://dx.doi.org/10.1016/j.scienta.2016.09.001
Editor:  Scientia Horticulturae, v. 211, p. 312-318, Nov. 2016.
Relação:  Embrapa Semiárido - Artigo em periódico indexado (ALICE)
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