Implications of the population effect in the selection of soybean progeny. (5th September 2017)

• Record Type: Journal Article
• Authors: de Cássia Pereira, Francielly; Bruzi, Adriano Teodoro; de Matos, José Wilacildo; Rezende, Breno Alvarenga; Prado, Luis Claudio; Nunes, José Airton Rodrigues
• Editors: Piepho, H.‐P.
• Is Part Of: Plant breeding. Volume 136:Number 5(2017)
• Page Start: 679
• Page End: 687
• Publication Date: 2017-09-05
• Subjects: Glycine max -- mixed model approach -- plant improvement -- selection efficiency; Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12512
• Languages: English
• ISSNs: 0179-9541

Abstract

Abstract: The goal of this study was to verify the influence of the population effect in the estimates of genetic and phenotypic components and to identify the best soybean progeny or lines in a commercial soybean breeding programme. We evaluated 292 populations for grain yield and absolute maturity during three agricultural years. To quantify the efficiency of the inclusion of the population's effect in the model, we estimated genetic gain with the selection, the Spearman's correlation, the coincidence index, the realized gain and correlated response of selected genotypes with and without the effect of the population. It was found that the variance components, heritability and coefficient of experimental variation were better estimated when the effect of the population was included, providing greater gain with selection for grain yield and absolute maturity. Coincidence and ranking among the selected progeny with and without the effect of the population are of greater magnitude in more advanced inbreeding generations and at higher percentage of selected progeny. The use of the population effect has greater importance in earlier generations of inbreeding.