Data/hora: 13/06/2024 01:31:30

Provedor de dados: | 74
País: | Brazil
Título: | AFLP marker linked to water-stress-tolerant bulks in barley (Hordeum vulgare L.)
Autores: | Altinkut,A.; Kazan,K.; Gozukirmizi,N.
Data: | 2003-01-01
Ano: | 2003
Palavras-chave: | Bulked segregant analysis; Drought; Hordeum vulgare; AFLP; Paraquat.
Resumo: | The amplified fragment length polymorphism (AFLP) assay is an efficient method for the identification of molecular markers, useful in the improvement of numerous crop species. Bulked Segregant Analysis (BSA) was used to identify AFLP markers associated with water-stress tolerance in barley, as this would permit rapid selection of water-stress tolerant genotypes in breeding programs. AFLP markers linked to water-stress tolerance was identified in two DNA pools (tolerant and sensitive), which were established using selected F2 individuals resulting from a cross between water-stress-tolerant and sensitive barley parental genotypes, based on their paraquat (PQ) tolerance, leaf size, and relative water content (RWC). All these three traits were previously shown to be associated with water-stress tolerance in segregating F2 progeny of the barley cross used in a previous study. AFLP analysis was then performed on these DNA pools, using 40 primer pairs to detect AFLP fragments that are present/absent, respectively, in the two pools and their parental lines. One separate AFLP fragment, which was present in the tolerant parent and in the tolerant bulk, but absent in the sensitive parent and in the sensitive bulk, was identified. Polymorphism of the AFLP marker was tested among tolerant and sensitive F2 individuals. The presence of this marker that is associated with water-stress tolerance will greatly enhance selection for paraquat and water-stress tolerant genotypes in future breeding programs.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000100013
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572003000100013
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.26 n.1 2003
Fonte: | info:eu-repo/semantics/openAccess