Data/hora: 09/06/2024 03:57:03

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Selection of Coffea canephora parents from the botanical varieties Conilon and Robusta for the production of intervarietal hybrids	
Autores: 	Oliveira,Leilane Nicolino Lamarão de; Rocha,Rodrigo Barros; Ferreira,Fábio Medeiros; Spinelli,Victor Mouzinho; Ramalho,André Rostand; Teixeira,Alexsandro Lara.	
Data: 	2018-01-01	
Ano: 	2018	
Palavras-chave: 	Coffea canephora; Genetic divergence; Heterosis.	
Resumo: 	ABSTRACT: The objective of this research was to quantify the genetic divergence of potential Coffea canephora parents, with the goal of developing progenies that associate the best traits of the Conilon and Robusta botanical varieties for hybrid vigor expression. Thus, 10 morphological and productive characteristics of 130 clones of Conilon and Robusta botanical varieties and their intervarietal hybrids were evaluated over 2 years. The experiment was conducted in a randomized block design with four replicates of four plants per plot. For selection of parents, the main component analysis was used to associate values with reference points obtained from the average of each botanical variety. The first two principal components allowed for the separation of the botanical varieties representing the variability contained in the original data with 76% for the first year and 69% for the second year. Although, the genotype × years interaction had significant effects, there were minor differences in the grouping from one year to the next, which is associated with the higher repeatability estimates observed in this study. It was observed that crosses with the 16-1-81I, 9-1-82L, and 13-1-61I parents of the botanical variety Robusta and the 167I, 890E, and 130I parents of the Conilon botanical variety presented greater potential for obtaining selection gains.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400402	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20170444	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.48 n.4 2018	
Fonte: 	info:eu-repo/semantics/openAccess