Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/45649
Title: Divergência genética entre subamostras de mandioca
Other Titles: Genetic divergence among cassava acessions
Keywords: Manihot esculenta
Pré-melhoramento
Análises biométricas
Pre-breeding
Biometrics analyses
Issue Date: 2010
Publisher: Instituto Agronômico de Campinas (IAC)
Citation: NICK, C. et al. Divergência genética entre submostras de mandioca. Bragantia, Campinas, v. 69, n. 2, p. 289-298, 2010. DOI: 10.1590/S0006-87052010000200005.
Abstract: The objective of the present study was to estimate the genetic diversity among 75 F1 clones, 19 landraces and six commercial cultivars and to suggest on the basis of dissimilarity and the agronomic performance the accessions potential by use full as cultivars or for breeding programs. In addition this study aimed at to estimate the relative contribution of phenotypic traits for the diversity. The accessions were evaluated using seven quantitative traits related to shoot and roots production in experimental trial conducted in Lavras, Minas Gerais State. The design was a simple lattice 10x10, in which plots of 2.4 m2, and four useful plants. The genetic diversity was expressed by the generalized Mahalanobis distance, with subsequent grouping of the accessions by Tocher's optimization procedure. The relative contribution of traits to the diversity based method of Singh (1981). There are genetic differences between the accessions studied. The accessions 60, 61, 66 and 67 are potentially useful to participate in phases in a breeding program. The yield of shoots biomass and roots number per plant were more important for accession discrimination.
URI: http://repositorio.ufla.br/jspui/handle/1/45649
Appears in Collections:DAG - Artigos publicados em periódicos

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