Data/hora: 12/06/2024 03:33:09

Provedor de dados: | 74
País: | Brazil
Título: | Intraspecific genetic diversity of Drechslera tritici-repentis as detected by random amplified polymorphic DNA analysis
Autores: | Santos,Ana Maria Pujol Vieira dos; Matsumura,Aida T. Santos; Van Der Sand,Sueli Teresinha.
Data: | 2002-01-01
Ano: | 2002
Palavras-chave: | Drechslera tritici-repentis; RAPD; DNA; Polymorphism; Genetic diversity.
Resumo: | The phytopathogenic fungus Drechslera tritici-repentis causes tan spot, an important disease of wheat in the southern Brazilian state of Rio Grande do Sul. Twelve D. tritici-repentis isolates were obtained from wheat seeds from different locations in the state. Their colony morphology on potato dextrose agar and polymorphisms in genomic DNA by the random amplified polymorphic DNA (RAPD) method were investigated. For the RAPD method, 23 primers were tested of which nine were selected for use in the study of D. tritici-repentis polymorphisms. The degree of similarity between isolates was calculated using a simple matching coefficient and dendrograms constructed by the unweighted pair-group method with arithmetical averages (UPGMA). The morphological and RAPD analyses showed intraspecific polymorphisms within the isolates, but it was not possible to establish a relationship between these polymorphisms and the geographical regions from where the host seeds were collected.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200020
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572002000200020
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.25 n.2 2002
Fonte: | info:eu-repo/semantics/openAccess