Clonal selection in S0 and S1 peach trees evaluated in a subtropical environment.

• Autor(a) principal: SILVA, J. O. da C. e
• Data de Publicação: 2021
• Outros Autores: BRUCKNER, C. H., CARNEIRO, P. C. S., RESENDE, M. D. V. de, ALVES, R. S., RIBEIRO, M. R., SILVA, D. F. P. da
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139209; https://doi.org/10.1590/1984-70332021v21n1a1
• topic: Seleção Genética; Pêssego; Clone; Prunus persica var. nucipersica; Fruit trees; Statistical models; Multivariate analysis; Selection methods; Peaches

The aims of this study were to estimate genetic parameters, predict genotypic values, and analyze the genotypic divergence in S0 and S1 peach trees evaluated in a subtropical environment by the mixed model methodology. For this, twenty-two clones were evaluated for plant and fruit traits. Genotypic variance among clones was significant. The individual broad-sense heritabilities ranged from 0.11 to 0.84, and the individual repeatability coefficients ranged from 0.15 to 0.89. The genotypic coefficients of variation were higher than 10% for most of the traits. Clustering based on plant and fruit traits led to the formation of two and five mutually exclusive groups, respectively. Multivariate analysis of principal components indicated that some traits could be excluded from genetic evaluation. Considering the yield trait and the selection of five clones, predicted gain from selection was 70%, which shows the possibility of considerable genetic progress from clonal selection in peach trees.