Data/hora: 29/05/2024 00:55:06

Provedor de dados: | Genetics and Molecular Biology
País: | Brazil
Título: | Comparison of similarity coefficients based on RAPD markers in the common bean
Autores: | Duarte,Jair Moura; Santos,João Bosco dos; Melo,Leonardo Cunha.
Data: | 1999-09-01
Ano: | 1999
Resumo: | The alterations caused by eight different similarity coefficients were evaluated in the clustering and ordination of 27 common bean (Phaseolus vulgaris L.) cultivars analyzed by RAPD markers. The Anderberg, simple matching, Rogers and Tanimoto, Russel and Rao, Ochiai, Jaccard, Sorensen-Dice, and Ochiai II's coefficients were tested. Comparisons among the coefficients were made through correlation analysis of genetic distances obtained by the complement of these coefficients, dendrogram evaluation (visual inspection and consensus fork index - CIC), projection efficiency in a two-dimensional space, and groups formed by Tocher's optimization procedure. The employment of different similarity coefficients caused few alterations in cultivar classification, since correlations among genetic distances were larger than 0.86. Nevertheless, the different similarity coefficients altered the projection efficiency in a two-dimensional space and formed different numbers of groups by Tocher's optimization procedure. Among these coefficients, Russel and Rao's was the most discordant and the Sorensen-Dice was considered the most adequate due to a higher projection efficiency in a two-dimensional space. Even though few structural changes were suggested in the most different groups, these coefficients altered some relationships between cultivars with high genetic similarity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571999000300024
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47571999000300024
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.22 n.3 1999
Fonte: | info:eu-repo/semantics/openAccess