Data/hora: 12/06/2024 02:34:26

Provedor de dados: 	64	
País: 	Brazil	
Título: 	Performance of the double-cross tomato hybrids from a partial diallel	
Autores: 	Matos,Rafael de; Resende,Juliano Tadeu Vilela de; Zeist,André Ricardo; Corte,Lígia Erpen-Dalla; Da-Silva,Paulo Roberto; Zeffa,Douglas Mariani.	
Data: 	2021-01-01	
Ano: 	2021	
Palavras-chave: 	Solanum lycopersicum; ISSR; Molecular markers; Plant breeding; Heterosis.	
Resumo: 	ABSTRACT Knowledge of the combining ability of genotypes, genetic diversity, and heterosis play the paramount role in obtaining double-cross hybrids with high productivity. This study was aimed at evaluating these parameters in tomato genotypes using partial diallel crosses among the commercial single-cross hybrids, which verified the possibility of using double-cross hybrids for commercial purposes. Tomato genotypes included 15 double-cross hybrids, their genitors, and two commercial genotypes as checks. Of the fifteen double-cross hybrids of tomato, two crosses exhibited superiority, such as Aguamiel × Compack and Dominador × Compack, mainly for the total and commercial fruit yields. The phenotypic expression of the trait is controlled by the genes with non-additive effects, whereas the genes with additive effects account for the genotypes of fruit mass, horizontal diameter, vertical diameter, and bunch insertion height. Regarding the genetic diversity, molecular analyses pointed out polymorphism for 79 percent of the evaluated loci evidencing a high genetic variability among the genitors. The heterosis values were low for most of the crosses, except for Forty × Plutão that represented 107 percent of heterosis for the total fruit yield. As compared with the commercial checks, the diallel cross generated superior quality hybrids, which inferred the possibility of obtaining double-cross hybrids of tomato with significant heterosis.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542021000100205	
Editor: 	Editora da Universidade Federal de Lavras	
Relação: 	10.1590/1413-7054202145027320	
Formato: 	text/html	
Fonte: 	Ciência e Agrotecnologia  v.45 2021	
Fonte: 	info:eu-repo/semantics/openAccess