Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/21469
Tipo: | Artigo |
Título: | High-density genetic mapping for coffee leaf rust resistance |
Autor(es): | Loureiro, Marcelo Ehlers Diola, Valdir Brito, Giovani Greigh de Caixeta, Eveline Teixeira Maciel-Zambolim, Eunize Sakiyama, Ney Sussumu |
Abstract: | Coffee leaf rust caused by the fungus Hemileia vastatrix causes considerable economic losses for coffee producers. Although agrochemical products can provide sufficient disease control, the use of resistant cultivars is a safer alternative. This resistance may be constrained by one or a few genetic factors, mainly those found in material originating from interspecific hybrids. In this study, the genetic analysis of an F 2 population consisting of 224 plants derived from a crossing of Híbrido de Timor UFV 427-15 (resistant) with Catuaí Amarelo IAC 30 (susceptible) showed that a dominant gene confers the resistance of coffee to race II of H. vastatrix. From a genetic map saturated with 25 amplified fragment length polymorphism (AFLP) markers linked to the resistance gene, we developed a high-density genetic map with six sequence-characterized amplified region (SCAR) markers delimiting a chromosomal region of 9.45 cM and flanking the dominant gene at 0.7 and 0.9 cM. This is the first saturated and high-density genetic map obtained from this region containing the resistance gene. The results of this study are of great importance for the introduction of molecular markers for marker-assisted selection; they will also facilitate studies related to the cloning, structure, and function of race-specific genes involved in the resistance of coffee trees to H. vastatrix. |
Palavras-chave: | Coffea arabica Hemileia vastatrix Dominant resistance gene High-density genetic map |
Editor: | Tree Genetics & Genomes |
Tipo de Acesso: | Springer-Verlag 2011 |
URI: | http://dx.doi.org/10.1007/s11295-011-0406-2 http://www.locus.ufv.br/handle/123456789/21469 |
Data do documento: | 10-Jun-2011 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
artigo.pdf Until 2100-12-31 | texto completo | 566,79 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.