Genetic divergence in sesame based on morphological and agronomic traits
| Autor: | Nair Helena Castro Arriel, Antonio Orlando Di Mauro, Eder Ferreira Arriel, Sandra Helena Unêda-Trevisoli, Marcelo Marchi Costa, Ivana Marino Bárbaro, Franco Romero Silva Muniz |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Crop Breeding and Applied Biotechnology, Vol 7, Iss 3, Pp 253-261 (2007) |
| Druh dokumentu: | article |
| ISSN: | 1518-7853 1984-7033 |
| Popis: | The evaluation of diversity in germplasm collections is important for both plant breeders and germplasmcurators to optimize the use of the variability available. Diversity can be estimated by different genetic markers. The purposeof this study was to estimate the genetic divergence of 30 morphological and agronomic traits in 108 sesame genotypes bymultivariate analysis. The Cole-Rodgers index was used to establish the dissimilarity matrices. The principal componentanalysis identified the traits that contributed most to the divergence and the genotypes were clustered by Tocher’s optimization.Despite the narrow genetic basis, the markers were efficient to characterize the genotypes and identify the most similar groupsor duplicate and divergent genotypes. Greatest variation was found for the traits number of capsules per plant and grain yield. |
| Databáze: | Directory of Open Access Journals |
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