Overall heritability in popcorn estimated by meta-analysis

Luiz Rafael   Clóvis; Ronald José Barth  Pinto; Renan Santos  Uhdre; Jocimar Costa  Rosa; Hugo  Zeni Neto; Marcelo  Vivas; Antônio  Teixeira do  Amaral Júnior

doi:10.4025/actasciagron.v43i1.53721

Luiz Rafael Clóvis Universidade Estadual de Maringá
Ronald José Barth Pinto Universidade Estadual de Maringá
Renan Santos Uhdre Universidade Estadual de Maringá https://orcid.org/0000-0003-2060-0241
Jocimar Costa Rosa Universidade Estadual de Maringá
Hugo Zeni Neto Universidade Estadual de Maringá
Marcelo Vivas Universidade Estadual do Norte Fluminense
Antônio Teixeira do Amaral Júnior Universidade Estadual do Norte Fluminense

DOI: https://doi.org/10.4025/actasciagron.v43i1.53721

Palavras-chave: meta-analysis; data compilation; summary data

Resumo

The objective of this study was to conduct a meta-analysis and test its efficiency in summarizing the heterogeneous data of heritability estimates for the traits of grain yield (GY) and popping expansion (PE), and to provide reliable estimates of selection gains in popcorn. Therefore, 97 heritability estimates ( ) for popcorn GY and PE in the broad and narrow sense were used. The main procedures underlying the estimation of the combined heritability ( ) using the technique of meta-analysis consisted of i) an exploratory analysis of the set of heritability estimates to detect outliers using a box-plot chart, ii) the verification of the required statistical assumptions, iii) testing the involved heritability estimates for homogeneity, and iv) the calculation of the estimates of combined heritability. The meta-analysis facilitated the synthesis of the information pertaining to heritability in popcorn. The combined heritability estimates ( ) in the broad sense for GY and PE were 0.5208 ± 0.0229 and 0.6356 ± 0.0209, respectively, and in the narrow sense were 0.3290 ± 0.0292 and 0.3083 ± 0.0298, respectively.

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