Pure line selection in a heterogeneous soybean cultivar

Although cultivars of autogamous plants are homogeneous genotypes, they may show natural variability due to mechanical mixing, natural hybridization, and mutation. The aim of the present study was to estimate genetic and phenotypic parameters and to identify and select superior genotypes that associ...

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Veröffentlicht in:Crop breeding and applied biotechnology 2019-09, Vol.19 (3), p.277-284
Hauptverfasser: Amaral, Lígia de Oliveira, Bruzi, Adriano Teodoro, Resende, Pedro Milanez de, Silva, Karina Barroso
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container_issue 3
container_start_page 277
container_title Crop breeding and applied biotechnology
container_volume 19
creator Amaral, Lígia de Oliveira
Bruzi, Adriano Teodoro
Resende, Pedro Milanez de
Silva, Karina Barroso
description Although cultivars of autogamous plants are homogeneous genotypes, they may show natural variability due to mechanical mixing, natural hybridization, and mutation. The aim of the present study was to estimate genetic and phenotypic parameters and to identify and select superior genotypes that associate good performance in traits of interest from a heterogeneous population derived from the cultivar BRS Favorita RR. The evaluation experiments were carried out in two crop years and five cities of the state of Minas Gerais, Brazil, in a lattice design, using progenies and the control ‘BRS Favorita RR’. Plant height, first pod height, days to full maturity, lodging score, and grain yield were evaluated. For estimation of the variance components, analysis of deviance was performed by the restricted maximum likelihood (REML) method. The results show that there is difference among treatments and that it is possible to select progenies that outperform the control for all traits evaluated.
doi_str_mv 10.1590/1984-70332019v19n3a39
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1984-7033
1984-7033
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subjects AGRONOMY
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Crop yield
Cultivars
Genotypes
Hybridization
Lattice design
Lodging
Parameter identification
Soybeans
Variance analysis
title Pure line selection in a heterogeneous soybean cultivar
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