Genetic gain of ‘Valenciana’ onion populations developed in the Brazilian Semi-Arid region

Genetic gain of ‘Valenciana’ onion populations developed in the Brazilian Semi-Arid region

The aim of the present study was to estimate the genetic improvement in the last recurrent selection cycles applied in two ‘Valenciana’ onion populations in Petrolina, PE. The experiments were carried out between October 2014 and January 2015, in Petrolina and Juazeiro, BA. The experiment consisted...

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Published in:Crop breeding and applied biotechnology Vol. 17; no. 2; pp. 168 - 174
Main Authors: Oliveira, Antonio Esmael Silva de, Santos, Carlos Antônio Fernandes, Luz, Lucas Nunes da, Oliveira, Valter Rodrigues, Candeia, Jonas Araújo, Carvalho Filho, José Luiz Sandes de
Format: Journal Article
Language:English
Published: Vicosa Crop Breeding and Applied Biotechnology 01-06-2017
Brazilian Society of Plant Breeding
Subjects:
AGRONOMY
Allium cepa
Arid regions
Arid zones
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Genetic drift
Genetic improvement
genetic progress
Heritability
Populations
recurrent selection
Semiarid environments
Allium cepa
genetic progress
recurrent selection
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Abstract The aim of the present study was to estimate the genetic improvement in the last recurrent selection cycles applied in two ‘Valenciana’ onion populations in Petrolina, PE. The experiments were carried out between October 2014 and January 2015, in Petrolina and Juazeiro, BA. The experiment consisted of a randomized block design, with 12 treatments and three replications. Analyses of variances were carried out separately for each population. The control population CNPH6400 was the comparison basis. Heritability and genetic gain were estimated for total (Prototal) and commercial (Procom) bulb yields. Significant differences were observed for Prototal and Procom in both populations and in both environments, except for the 25CA10 population, in Juazeiro. The highest Procom genetic gains were observed in Petrolina for 25CA10 and T811CR13 populations (510.5% and 522.1%, respectively), proving the efficiency of recurrent selection cycles. Genetic gains were nonlinear, and fluctuations may have occurred due to genetic drift.
AbstractList Abstract The aim of the present study was to estimate the genetic improvement in the last recurrent selection cycles applied in two ‘Valenciana’ onion populations in Petrolina, PE. The experiments were carried out between October 2014 and January 2015, in Petrolina and Juazeiro, BA. The experiment consisted of a randomized block design, with 12 treatments and three replications. Analyses of variances were carried out separately for each population. The control population CNPH6400 was the comparison basis. Heritability and genetic gain were estimated for total (Prototal) and commercial (Procom) bulb yields. Significant differences were observed for Prototal and Procom in both populations and in both environments, except for the 25CA10 population, in Juazeiro. The highest Procom genetic gains were observed in Petrolina for 25CA10 and T811CR13 populations (510.5% and 522.1%, respectively), proving the efficiency of recurrent selection cycles. Genetic gains were nonlinear, and fluctuations may have occurred due to genetic drift.
The aim of the present study was to estimate the genetic improvement in the last recurrent selection cycles applied in two ‘Valenciana’ onion populations in Petrolina, PE. The experiments were carried out between October 2014 and January 2015, in Petrolina and Juazeiro, BA. The experiment consisted of a randomized block design, with 12 treatments and three replications. Analyses of variances were carried out separately for each population. The control population CNPH6400 was the comparison basis. Heritability and genetic gain were estimated for total (Prototal) and commercial (Procom) bulb yields. Significant differences were observed for Prototal and Procom in both populations and in both environments, except for the 25CA10 population, in Juazeiro. The highest Procom genetic gains were observed in Petrolina for 25CA10 and T811CR13 populations (510.5% and 522.1%, respectively), proving the efficiency of recurrent selection cycles. Genetic gains were nonlinear, and fluctuations may have occurred due to genetic drift.
Author Oliveira, Antonio Esmael Silva de
Carvalho Filho, José Luiz Sandes de
Luz, Lucas Nunes da
Santos, Carlos Antônio Fernandes
Oliveira, Valter Rodrigues
Candeia, Jonas Araújo
AuthorAffiliation Instituto Agronomico de Pernambuco
Universidade Federal Rural de Pernambuco
Embrapa Hortaliças
Embrapa Semiárido
Universidade da Integração Internacional da Lusofonia Afro-Brasileira
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Cites_doi 10.21273/HORTSCI.35.7.1360
10.2298/GENSR0303149P
10.1590/S0100-204X1999001000016
10.1080/07352688509382202
10.1590/S0006-87052008000400004
10.1016/j.agwat.2013.02.002
10.21273/HORTSCI.47.9.1369
10.12692/ijb/3.4.135-141
10.1590/S0102-05362008000100019
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Issue 2
Keywords Allium cepa
genetic progress
recurrent selection
Language English
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Snippet The aim of the present study was to estimate the genetic improvement in the last recurrent selection cycles applied in two ‘Valenciana’ onion populations in...
Abstract The aim of the present study was to estimate the genetic improvement in the last recurrent selection cycles applied in two ‘Valenciana’ onion...
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SubjectTerms AGRONOMY
Allium cepa
Arid regions
Arid zones
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Genetic drift
Genetic improvement
genetic progress
Heritability
Populations
recurrent selection
Semiarid environments
Title Genetic gain of ‘Valenciana’ onion populations developed in the Brazilian Semi-Arid region
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