Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts

Selection indexes are useful tools for the simultaneous selection of several descriptors aiming to promote genetic gains and a reliable advancement of segregating populations. This study tested the use of selection index of distance from the genotype to the ideotype to assist in the search for super...

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Autores principales:	Nunes da Luz,Lucas, Cavalcanti dos Santos,Roseane, Melo Filho,Péricles de Albuquerque, Azeredo Gonçalves,Leandro Simôes
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2014
Materias:	Arachis hypogaea genetic gains selection index Ward/MLM
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100003
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spelling	oai:scielo:S0718-583920140001000032018-10-01Combined selection and multivariate analysis in early generations of intraspecific progenies of peanutsNunes da Luz,LucasCavalcanti dos Santos,RoseaneMelo Filho,Péricles de AlbuquerqueAzeredo Gonçalves,Leandro Simôes Arachis hypogaea genetic gains selection index Ward/MLM Selection indexes are useful tools for the simultaneous selection of several descriptors aiming to promote genetic gains and a reliable advancement of segregating populations. This study tested the use of selection index of distance from the genotype to the ideotype to assist in the search for superior progenies, based on agronomic variables obtained from early generation progeny of intraspecific progenies of peanuts (Arachis hypogaea L.) Four segregating populations were used, each consisting of 90 progenies, arranged in a randomized block design with three replicates, in which the best 30 progenies of each population were selected. The index of distance to the ideotype, used for the selection, was built from a non-real model cultivar that meets the requirements for traits main stem height (SH), early flowering (EF), number of pegs (NP), number of pods per plant (NPP), weight of 100 pods (WP100), number of seeds per plant, and weight 100 seed (WS100). It was observed that the selection index used was effective for differentiating progenies and promoting gains at a selection pressure of 33.33%. Gains were variable for the same traits in the different populations. The number of pods per plant, for example, ranged from 3.96% in the population 3 to 16.98% in the population 4. The analysis of diversity showed that progenies selected grouped differently, by principal coordinates analysis, which corroborates the ability of the index to form groups according to traits of interest. The groups formed revealed moderate variability by the diversity analysis by the Ward/MLM method.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.74 n.1 20142014-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100003en10.4067/S0718-58392014000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Arachis hypogaea genetic gains selection index Ward/MLM
spellingShingle	Arachis hypogaea genetic gains selection index Ward/MLM Nunes da Luz,Lucas Cavalcanti dos Santos,Roseane Melo Filho,Péricles de Albuquerque Azeredo Gonçalves,Leandro Simôes Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
description	Selection indexes are useful tools for the simultaneous selection of several descriptors aiming to promote genetic gains and a reliable advancement of segregating populations. This study tested the use of selection index of distance from the genotype to the ideotype to assist in the search for superior progenies, based on agronomic variables obtained from early generation progeny of intraspecific progenies of peanuts (Arachis hypogaea L.) Four segregating populations were used, each consisting of 90 progenies, arranged in a randomized block design with three replicates, in which the best 30 progenies of each population were selected. The index of distance to the ideotype, used for the selection, was built from a non-real model cultivar that meets the requirements for traits main stem height (SH), early flowering (EF), number of pegs (NP), number of pods per plant (NPP), weight of 100 pods (WP100), number of seeds per plant, and weight 100 seed (WS100). It was observed that the selection index used was effective for differentiating progenies and promoting gains at a selection pressure of 33.33%. Gains were variable for the same traits in the different populations. The number of pods per plant, for example, ranged from 3.96% in the population 3 to 16.98% in the population 4. The analysis of diversity showed that progenies selected grouped differently, by principal coordinates analysis, which corroborates the ability of the index to form groups according to traits of interest. The groups formed revealed moderate variability by the diversity analysis by the Ward/MLM method.
author	Nunes da Luz,Lucas Cavalcanti dos Santos,Roseane Melo Filho,Péricles de Albuquerque Azeredo Gonçalves,Leandro Simôes
author_facet	Nunes da Luz,Lucas Cavalcanti dos Santos,Roseane Melo Filho,Péricles de Albuquerque Azeredo Gonçalves,Leandro Simôes
author_sort	Nunes da Luz,Lucas
title	Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
title_short	Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
title_full	Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
title_fullStr	Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
title_full_unstemmed	Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
title_sort	combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100003
work_keys_str_mv	AT nunesdaluzlucas combinedselectionandmultivariateanalysisinearlygenerationsofintraspecificprogeniesofpeanuts AT cavalcantidossantosroseane combinedselectionandmultivariateanalysisinearlygenerationsofintraspecificprogeniesofpeanuts AT melofilhopericlesdealbuquerque combinedselectionandmultivariateanalysisinearlygenerationsofintraspecificprogeniesofpeanuts AT azeredogoncalvesleandrosimoes combinedselectionandmultivariateanalysisinearlygenerationsofintraspecificprogeniesofpeanuts
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Combined selection and multivariate analysis in early generations of intraspecific progenies of peanuts

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