Title:	Estimates of genetic parameters, genetic variability, and selection in the S1 generation of peach.
Authors:	SILVA, J. O. da C. e BRUCKNER, C. H. CARNEIRO, P. C. S. RESENDE, M. D. V. de ALVES, R. S. SILVA, D. F. P. da
Affiliation:	JOSÉ OSMAR DA COSTA E SILVA, UFV; CLAUDIO HORST BRUCKNER, UFV; PEDRO CRESCÊNCIO SOUZA CARNEIRO, UFV; MARCOS DEON VILELA DE RESENDE, CNPCa; RODRIGO SILVA ALVES, UFV; DANIELLE FABÍOLA PEREIRA DA SILVA, UFG.
Date Issued:	2020
Citation:	Ciência Rural, v. 50, n. 10, e20190976, 2020.
Description:	The growing of peach in mild winter regions is made viable through the use of genotypes that have low need for cold conditions, and this is one of the main aims of breeding for these regions. Thus, the aims of this study were to estimate genetic parameters, evaluate genetic variability, and select families adapted to mild winter regions in the S1 generation of peach through mixed model methodology (REML/BLUP). For that purpose, 22 populations, 84 families, and 2090 individuals were evaluated for the following traits: bud burst rate (BR), node density (ND), plant height (PH), and trunk diameter (TD). Genetic variability was found for all the traits. Individual heritability in the broad sense was of low and medium magnitudes. The PH trait had positive genotypic correlation of high magnitude with TD. The ND trait had moderate negative genotypic correlation with PH and TD. Clustering by the Tocher method resulted in the formation of six mutually exclusive groups. Considering selection intensity of 25%, simultaneous selection for BR, ND, and TD led to predicted gains of 11.3% for BR, 9.7% for ND, -14.2% for PH, and -14.3% for TD, showing the great potential of the germplasm evaluated.
Thesagro:	Prunus Persica Melhoramento Vegetal Fruta Pêssego
NAL Thesaurus:	Fruit trees Plant breeding Peaches
DOI:	https://doi.org/10.1590/0103-8478cr20190976
Notes:	Título em português: Estimativas de parâmetros genéticos, variabilidade genética e seleção em geração S 1 de pessegueiros.
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (SAPC)