Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/25521
Tipo: Artigo
Título: Selection and genetic parameters for interpopulation hybrids between kouilou and robusta coffee
Autor(es): Carvalho, Humberto Fanelli
Silva, Felipe Lopes da
Resende, Marcos Deon Vilela de
Bhering, Leonardo Lopes
Abstract: Selection of hybrid coffee plants coming from crosses between divergent populations is particularly relevant for the success of breeding programs. This study aimed to outline the best selection strategy in a hybrid population of Coffea canephora var. kouilou and robusta by estimating intrapopulation genetic parameters. Twenty full-sib progenies obtained by North Caroline II were installed in a randomized complete blocks design, with one plant per elementary plot. The following traits were evaluated: vegetative vigor, reaction to rust, plant height, diameter of canopy projection, maturity time, and bean yield. Significant individual genotypic variance and heritability estimates lead to an effective selection. The multi-trait selection index carried out between progenies and at individual level provided 5% and 40% gain, respectively. Thus, intrapopulation selection in a hybrid population is a viable strategy for the selection of superior individuals to compose new crosses and clones for cultivars in the breeding program of C. canephora, even with unbalanced data.
Palavras-chave: Mixed models
Multi-trait index
Intrapopulation selection
Coffea canephora
Editor: Bragantia
Tipo de Acesso: Open Access
URI: http://dx.doi.org/10.1590/1678-4499.2018124
http://www.locus.ufv.br/handle/123456789/25521
Data do documento: 11-Jan-2019
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