Selection Strategy for Breeding Pepper Lines with Ornamental Potential

Selection Strategy for Breeding Pepper Lines with Ornamental Potential

Considering that effective selection strategies are essential for the development of new ornamental pepper cultivars, the objective of this work was to select superior partially endogamic lines (PEL) of pepper in a F<sub>2:3</sub> generation, using the combination of the genealogical met...

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Main Authors: Fátima de Souza Gomes, Samy Pimenta, Gabriela Cristina Alves Custódio, Wellington Silva Gomes, Joyce Costa Ribeiro, Nelson de Abreu Delvaux Júnior, Marlon Cristian Toledo Pereira, Monique Moreira Moulin, Willer Fagundes de Oliveira, Ana Karolyne Pereira Barbosa, Hélida Christhine de Freitas Monteiro, Ana Carolina Petri Gonçalves, Marcos Vinicius Bohrer Monteiro Siqueira
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Horticulturae
Subjects:
genetic parameters
multivariate analysis
ornamental pepper
REML/BLUP
simultaneous selection
Online Access:https://www.mdpi.com/2311-7524/11/7/789
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Summary:Considering that effective selection strategies are essential for the development of new ornamental pepper cultivars, the objective of this work was to select superior partially endogamic lines (PEL) of pepper in a F<sub>2:3</sub> generation, using the combination of the genealogical method with mixed linear models. The experiment consisted of four cycles: parents and generations F<sub>1</sub>, F<sub>2</sub> and F<sub>2:3</sub>. Qualitative (QLD) and quantitative (QTD) descriptors were evaluated. QLD were analyzed through descriptive statistics, and QTD were analyzed through estimates of genetic parameters and prediction of genetic values by REML/BLUP. Multivariate analysis was performed to group and select individuals based on QLD and QTD simultaneously. The descriptors number of flowers per axil, flower position, mature fruit color, fruit position, fruit brightness, and capsaicin in the placenta presented no variation within the F<sub>2:3</sub> population. The selection accuracy varied from high to very high, denoting a high experimental precision. Higher additive genetic action was detected for descriptors, considering the individual heritability in the strict sense and the additive heritability within the progeny. Forty-eight PELs were selected quantitatively and, considering QLD and QTD descriptors simultaneously, the number of individuals was reduced from 48 to 30 PELs. The combined strategies used enabled to establish the best strategy for an efficient selection of superior PEL of ornamental pepper.
ISSN:2311-7524

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