Data/hora: 09/06/2024 12:30:56

Provedor de dados: | 53
País: | Brazil
Título: | Selection and genetic parameters for interpopulation hybrids between kouilou and robusta coffee
Autores: | Carvalho,Humberto Fanelli; Silva,Felipe Lopes da; Resende,Marcos Deon Vilela de; Bhering,Leonardo Lopes.
Data: | 2019-03-01
Ano: | 2019
Palavras-chave: | Mixed models; Multi-trait index; Intrapopulation selection; Coffea canephora.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100052
Editor: | Instituto Agronômico de Campinas
Relação: | 10.1590/1678-4499.2018124
Formato: | text/html
Fonte: | Bragantia  v.78 n.1 2019
Fonte: | info:eu-repo/semantics/openAccess