Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes

Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes

The objective of this work was to estimate genetic parameters and to evaluate simultaneous selection for root yield and for adaptability and stability of cassava genotypes. The effects of genotypes were assumed as fixed and random, and the mixed model methodology (REML/Blup) was used to estimate genetic parameters and the harmonic mean of the relative performance of genotypic values (HMRPGV), for simultaneous selection purposes. Ten genotypes were analyzed in a complete randomized block design, with four replicates. The experiment was carried out in the municipalities of Altamira, Santarém, and Santa Luzia do Pará in the state of Pará, Brazil, in the growing seasons of 2009/2010, 2010/2011, and 2011/2012. Roots were harvested 12 months after planting, in all tested locations. Root yield had low coefficients of genotypic variation (4.25%) and broad-sense heritability of individual plots (0.0424), which resulted in low genetic gain. Due to the low genotypic correlation (0.15), genotype classification as to root yield varied according to the environment. Genotypes CPATU 060, CPATU 229, and CPATU 404 stood out as to their yield, adaptability, and stability.

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Main Authors: Farias Neto,João Tomé de, Moura,Elisa Ferreira, Resende,Marcos Deon Vilela de, Celestino Filho,Pedro, Augusto,Sebastião Geraldo
Format: Digital revista
Language:English
Published: Embrapa Secretaria de Pesquisa e Desenvolvimento 2013
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001200005
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spelling oai:scielo:S0100-204X20130012000052014-03-31Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypesFarias Neto,João Tomé deMoura,Elisa FerreiraResende,Marcos Deon Vilela deCelestino Filho,PedroAugusto,Sebastião Geraldo Manihot esculenta genotype x environment interaction HMRPGV REML/Blup The objective of this work was to estimate genetic parameters and to evaluate simultaneous selection for root yield and for adaptability and stability of cassava genotypes. The effects of genotypes were assumed as fixed and random, and the mixed model methodology (REML/Blup) was used to estimate genetic parameters and the harmonic mean of the relative performance of genotypic values (HMRPGV), for simultaneous selection purposes. Ten genotypes were analyzed in a complete randomized block design, with four replicates. The experiment was carried out in the municipalities of Altamira, Santarém, and Santa Luzia do Pará in the state of Pará, Brazil, in the growing seasons of 2009/2010, 2010/2011, and 2011/2012. Roots were harvested 12 months after planting, in all tested locations. Root yield had low coefficients of genotypic variation (4.25%) and broad-sense heritability of individual plots (0.0424), which resulted in low genetic gain. Due to the low genotypic correlation (0.15), genotype classification as to root yield varied according to the environment. Genotypes CPATU 060, CPATU 229, and CPATU 404 stood out as to their yield, adaptability, and stability.info:eu-repo/semantics/openAccessEmbrapa Secretaria de Pesquisa e DesenvolvimentoPesquisa Agropecuária BrasileiraPesquisa Agropecuária Brasileira v.48 n.12 20132013-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001200005en10.1590/S0100-204X2013001200005
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Farias Neto,João Tomé de
Moura,Elisa Ferreira
Resende,Marcos Deon Vilela de
Celestino Filho,Pedro
Augusto,Sebastião Geraldo
spellingShingle Farias Neto,João Tomé de
Moura,Elisa Ferreira
Resende,Marcos Deon Vilela de
Celestino Filho,Pedro
Augusto,Sebastião Geraldo
Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
author_facet Farias Neto,João Tomé de
Moura,Elisa Ferreira
Resende,Marcos Deon Vilela de
Celestino Filho,Pedro
Augusto,Sebastião Geraldo
author_sort Farias Neto,João Tomé de
title Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
title_short Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
title_full Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
title_fullStr Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
title_full_unstemmed Genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
title_sort genetic parameters and simultaneous selection for root yield, adaptability and stability of cassava genotypes
description The objective of this work was to estimate genetic parameters and to evaluate simultaneous selection for root yield and for adaptability and stability of cassava genotypes. The effects of genotypes were assumed as fixed and random, and the mixed model methodology (REML/Blup) was used to estimate genetic parameters and the harmonic mean of the relative performance of genotypic values (HMRPGV), for simultaneous selection purposes. Ten genotypes were analyzed in a complete randomized block design, with four replicates. The experiment was carried out in the municipalities of Altamira, Santarém, and Santa Luzia do Pará in the state of Pará, Brazil, in the growing seasons of 2009/2010, 2010/2011, and 2011/2012. Roots were harvested 12 months after planting, in all tested locations. Root yield had low coefficients of genotypic variation (4.25%) and broad-sense heritability of individual plots (0.0424), which resulted in low genetic gain. Due to the low genotypic correlation (0.15), genotype classification as to root yield varied according to the environment. Genotypes CPATU 060, CPATU 229, and CPATU 404 stood out as to their yield, adaptability, and stability.
publisher Embrapa Secretaria de Pesquisa e Desenvolvimento
publishDate 2013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001200005
work_keys_str_mv AT fariasnetojoaotomede geneticparametersandsimultaneousselectionforrootyieldadaptabilityandstabilityofcassavagenotypes
AT mouraelisaferreira geneticparametersandsimultaneousselectionforrootyieldadaptabilityandstabilityofcassavagenotypes
AT resendemarcosdeonvilelade geneticparametersandsimultaneousselectionforrootyieldadaptabilityandstabilityofcassavagenotypes
AT celestinofilhopedro geneticparametersandsimultaneousselectionforrootyieldadaptabilityandstabilityofcassavagenotypes
AT augustosebastiaogeraldo geneticparametersandsimultaneousselectionforrootyieldadaptabilityandstabilityofcassavagenotypes
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