Multiple Traits Selection Strategies: A Proposal for Coffee Plant Breeding

Experiments with progenies of perennial species such as coffee are generally affected by the heterogeneity of residual variances between information repeatedly collected in space and time on the same individual. In this study, we propose an index that considers the individual heritability of multipl...

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Bibliographic Details
Published in:Agronomy (Basel) 2023-08, Vol.13 (8), p.2033
Main Authors: Piza, Mateus Ribeiro, Luz, Silvana Ramlow Otto Teixeira da, Andrade, Vinicius Teixeira, Figueiredo, Vanessa Castro, Abrahão, Juliana Costa de Rezende, Bruzi, Adriano Teodoro, Botelho, Cesar Elias
Format: Article
Language:English
Subjects:
Analysis
Breeding
Cercospora
Cercospora leaf spots
Coffea arabica L
Coffee
Coffee industry
Cultivars
Data analysis
Experiments
Factorial analysis
Fruits
Genetic analysis
Genetic improvement
Genotype & phenotype
Genotypes
Harvest
Heritability
Heterogeneity
heterogeneous variance
individual heritability
Leafspot
Leaves
Plant breeding
Rankings
Variables
Citations: Items that this one cites
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Summary:Experiments with progenies of perennial species such as coffee are generally affected by the heterogeneity of residual variances between information repeatedly collected in space and time on the same individual. In this study, we propose an index that considers the individual heritability of multiple traits for progeny selection and evaluate the applicability of this index in comparison with other indices in a real dataset. Data from 30 coffee genotypes in the F4:5 generation were used to obtain the individual heritability values (hi2) of progenies that were subjected to factorial analysis to obtain the scores and construct a scatter plot, where graphical analysis (GA) was applied. Genetic gains were obtained for productivity and resistance to Cercospora leaf spot using GA. The best performance among the strategies (−12.11%) was obtained using GA for resistance to Cercospora leaf spot, which has low heritability—contrary to the result obtained using the commonly used index based on the sum of Mulamba and Mock ranks. The GA approach allows an assertive selection to minimize the effects of heterogeneity between seasons, and greater genetic gains are obtained. Its use as a tool for the selection of perennial plant progenies based on multiple characters is promising.
ISSN:2073-4395
2073-4395
DOI:10.3390/agronomy13082033