Multivariate genetic divergence among sugarcane clones by multivariate analysis associated with mixed models

• Autor(a) principal: Lopes, Valéria Rosa
• Data de Publicação: 2014
• Outros Autores: Bespalhok Filho, Joao Carlos, Daros, Edelclaiton, Oliveira, Ricardo Augusto, Guerra, Edson Perez
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/12668
• topic: Saccharum officinarum; Genetic variability; Mix models; Principal components.; Saccharum officinarum; Variabilidade genética; Modelos mistos; Componentes principais.; Melhoramento Vegetal

This work had the aim to evaluate the genetic divergence in sugarcane clones using the methodology of graphic dispersion by principal components analysis associated to linear mixed models, indentifying the more divergent and productive genotypes with more precision, for a subsequent combination. 138 sugarcane clones of the RB97 series of the Sugarcane Breeding Program of the Universidade Federal do Parana, more two standard cultivars were evaluated in three environments, with two replications. The two first components explained 96% of the total variation, sufficiently for explaining the divergence found. The variable that contributed the most to de divergence was kilogram of brix per plot (BKP) followed by brix, mass of 10 stalks and number of stalks per plot. The more divergent sugarcane clones were RB975008, RB975112, RB975019, RB975153 and RB975067 and the more productive clones were RB975269, RB977533, RB975102, RB975317 and RB975038.