Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection
ABSTRACT Genetic variability is essential for gains in breeding programs. The cyclic process of progeny recombination is a strategy to raise the chances of selecting better genotype combinations. The objective of this study was to identify superior progenies between common bean genes groups in first recurrent selection cycle for root system traits. Parents of the Andean and Middle American gene groups were hybridized in a complete diallel scheme. Thereafter, the parents and F1 and F2 populations were planted in the field. To establish the base population of recurrent selection (C0), seven segregating populations (F2) with superior performance for root system were selected and intercrossed, resulting in recombinant progenies (C1). To estimate the selection gain, the parents and C0 and C1 genotypes were compared with regard to the following variables: total root length (TRL, cm), projected root area (PRA, cm2), root volume (VOL, cm3) and number of root tips (RT). The difference between genotype combinations indicates the presence of genetic variability and effectiveness of recurrent selection. The mean genetic progress for root system-related traits was 12.9% (TRL), 12.6% (PRA), 12% (VOL) and 11.5% (RT) in the first recombination cycle. The mean phenotypic performance of seven of the C1 progenies exceeded that of their parents for all root system traits. These progenies are promising as base populations of the next selection cycle.
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Instituto Agronômico de Campinas
2021
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oai:scielo:S0006-870520210001002152021-02-22Identification of superior progenies between common bean gene groups for root system obtained by recurrent selectionCerutti,Paulo HenriqueMelo,Rita Carolina deSilva,Jucimara AlvesFioreze,Ana Carolina da Costa LaraPrimieri,SilmarGuidolin,Altamir FredericoCoimbra,Jefferson Luís Meirelles Phaseolus vulgaris L. Genetic variability Genetic progress ABSTRACT Genetic variability is essential for gains in breeding programs. The cyclic process of progeny recombination is a strategy to raise the chances of selecting better genotype combinations. The objective of this study was to identify superior progenies between common bean genes groups in first recurrent selection cycle for root system traits. Parents of the Andean and Middle American gene groups were hybridized in a complete diallel scheme. Thereafter, the parents and F1 and F2 populations were planted in the field. To establish the base population of recurrent selection (C0), seven segregating populations (F2) with superior performance for root system were selected and intercrossed, resulting in recombinant progenies (C1). To estimate the selection gain, the parents and C0 and C1 genotypes were compared with regard to the following variables: total root length (TRL, cm), projected root area (PRA, cm2), root volume (VOL, cm3) and number of root tips (RT). The difference between genotype combinations indicates the presence of genetic variability and effectiveness of recurrent selection. The mean genetic progress for root system-related traits was 12.9% (TRL), 12.6% (PRA), 12% (VOL) and 11.5% (RT) in the first recombination cycle. The mean phenotypic performance of seven of the C1 progenies exceeded that of their parents for all root system traits. These progenies are promising as base populations of the next selection cycle.info:eu-repo/semantics/openAccessInstituto Agronômico de CampinasBragantia v.80 20212021-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052021000100215en10.1590/1678-4499.20200487 |
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Cerutti,Paulo Henrique Melo,Rita Carolina de Silva,Jucimara Alves Fioreze,Ana Carolina da Costa Lara Primieri,Silmar Guidolin,Altamir Frederico Coimbra,Jefferson Luís Meirelles |
| spellingShingle |
Cerutti,Paulo Henrique Melo,Rita Carolina de Silva,Jucimara Alves Fioreze,Ana Carolina da Costa Lara Primieri,Silmar Guidolin,Altamir Frederico Coimbra,Jefferson Luís Meirelles Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| author_facet |
Cerutti,Paulo Henrique Melo,Rita Carolina de Silva,Jucimara Alves Fioreze,Ana Carolina da Costa Lara Primieri,Silmar Guidolin,Altamir Frederico Coimbra,Jefferson Luís Meirelles |
| author_sort |
Cerutti,Paulo Henrique |
| title |
Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| title_short |
Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| title_full |
Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| title_fullStr |
Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| title_full_unstemmed |
Identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| title_sort |
identification of superior progenies between common bean gene groups for root system obtained by recurrent selection |
| description |
ABSTRACT Genetic variability is essential for gains in breeding programs. The cyclic process of progeny recombination is a strategy to raise the chances of selecting better genotype combinations. The objective of this study was to identify superior progenies between common bean genes groups in first recurrent selection cycle for root system traits. Parents of the Andean and Middle American gene groups were hybridized in a complete diallel scheme. Thereafter, the parents and F1 and F2 populations were planted in the field. To establish the base population of recurrent selection (C0), seven segregating populations (F2) with superior performance for root system were selected and intercrossed, resulting in recombinant progenies (C1). To estimate the selection gain, the parents and C0 and C1 genotypes were compared with regard to the following variables: total root length (TRL, cm), projected root area (PRA, cm2), root volume (VOL, cm3) and number of root tips (RT). The difference between genotype combinations indicates the presence of genetic variability and effectiveness of recurrent selection. The mean genetic progress for root system-related traits was 12.9% (TRL), 12.6% (PRA), 12% (VOL) and 11.5% (RT) in the first recombination cycle. The mean phenotypic performance of seven of the C1 progenies exceeded that of their parents for all root system traits. These progenies are promising as base populations of the next selection cycle. |
| publisher |
Instituto Agronômico de Campinas |
| publishDate |
2021 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052021000100215 |
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