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Early selection in open-pollinated Eucalyptus families based on competition covariates PAB
Pavan,Bruno Ettore; Paula,Rinaldo César de; Perecin,Dilermando; Scarpinati,Edimar Aparecido; Candido,Liliam Silvia.
The objetive of this work was to evaluate the influence of intergenotypic competition in open-pollinated families of Eucalyptus and its effects on early selection efficiency. Two experiments were carried out, in which the timber volume was evaluated at three ages, in a randomized complete block design. Data from the three years of evaluation (experiment 1, at 2, 4, and 7 years; and experiment 2, at 2, 5, and 7 years) were analyzed using mixed models. The following were estimated: variance components, genetic parameters, selection gains, effective number, early selection efficiency, selection gain per unit time, and coincidence of selection with and without the use of competition covariates. Competition effect was nonsignificant for ages under three years,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Intergenotypic competition; Progeny tests; Selection methods.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000600483
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