Produção Nacional
Revisado por pares
Genetic parameters, selection gains and associations between characters of Carya illinoinensis using mixed models
2024; Embrapa Informação Tecnológica; Volume: 59; Linguagem: Inglês
10.1590/s1678-3921.pab2024.v59.03777
ISSN1678-3921
AutoresLiana Carine dos Santos del Valle, Caroline Farias Barreto, Diógenes Cecchin Silveira, Carlos Roberto Martins, Roséli de Mello Farias, Marcelo Barbosa Malgarim,
Tópico(s)Genetic and phenotypic traits in livestock
ResumoAbstract The objective of this work was to estimate the genetic parameters of pecan (Carya illinoinensis) cultivars through mixed model analyses of data on vegetative growth, fruit production, and fruit quality traits. The study was conducted from 2021 to 2023, using the Barton, Desirable, Elliot, Mohawk, Jackson, Shoshoni, Stuart, and Success pecan cultivars, in the municipality of Santana do Livramento, in the state of Rio Grande do Sul, Brazil. The experimental design was completely randomized. Each replicate was composed of ten plants, totaling 80 plots. Nut vegetative growth, production, and quality were evaluated. The influence of the genotype x environment interaction on production traits and nut quality was confirmed. However, these effects were not observed on vegetative growth. Production per plant and productivity per hectare exhibited positive correlations with production efficiency in relation to canopy volume. For the vegetative and production traits, broad-sense individual heritability is low, suggesting a strong environmental influence. However, for the fruit quality traits, heritability is medium to high, indicating a greater genetic contribution and, therefore, a greater potential for response to selection.
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