Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models

ABSTRACT The efficient use of fodder and grassland as the basis of animal feed represents a way of raising productivity and reducing production costs. In this scenario, elephant-grass stands out among the most used forages in the intensive animal production systems in the world mainly due to its hig...

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Autores principales:	Stida,Wanessa F., Daher,Rogério F., Viana,Alexandre P., Vidal,Ana Kesia F., Freitas,Rafael S., Silva,Verónica B. da, Pereira,Antonio Vander, Cassaro,Sabrina, Menezes,Bruna R. da S., Furlani,Eduardo P.
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Dry matter yield forage production genetic variability Pennisetum purpureum selective accuracy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200198
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spelling	oai:scielo:S0718-583920180002001982018-08-16Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed modelsStida,Wanessa F.Daher,Rogério F.Viana,Alexandre P.Vidal,Ana Kesia F.Freitas,Rafael S.Silva,Verónica B. daPereira,Antonio VanderCassaro,SabrinaMenezes,Bruna R. da S.Furlani,Eduardo P. Dry matter yield forage production genetic variability Pennisetum purpureum selective accuracy ABSTRACT The efficient use of fodder and grassland as the basis of animal feed represents a way of raising productivity and reducing production costs. In this scenario, elephant-grass stands out among the most used forages in the intensive animal production systems in the world mainly due to its high productive potential, support capacity and nutritional quality. The purpose of this work was to estimate genetic parameters for the selection of elephant-grass (Pennisetum purpureum Schumach.) clones for forage production in two seasons, a period of water restriction and the total period of study. We evaluated 80 accessions of elephant-grass by means of the mixed-models methodology (REML/BLUP). The evaluation of DM yield (DMY) of the different genotypes were executed in edaphoclimatic conditions in Campos dos Goytacazes, Rio de Janeiro, Brazil. The Selegen-REML/BLUP software accomplished the statistical and genetic analyses. It was seen that the DMY trait was with a low estimate of coefficient of genotypic variation (3.08%), which demonstrates possible difficulties with the selection for this trait. Heritability-coefficient estimate was 0.3606 for the dry season and 0.4193 for the total period. Those results were the variation in that trait due to genetic causes. Although those values may not be considered of high magnitude, they are of great interest for the breeding mainly because it is a polygenic trait. In both periods, genotypes 7, 25, 41, 43, 57, 58, 62, 64, 68, and 77 stood out among the others, since it presented the highest genetic gains for DMY, which will enhance progress in the evaluated trait.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.2 20182018-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200198en10.4067/S0718-58392018000200198
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Dry matter yield forage production genetic variability Pennisetum purpureum selective accuracy
spellingShingle	Dry matter yield forage production genetic variability Pennisetum purpureum selective accuracy Stida,Wanessa F. Daher,Rogério F. Viana,Alexandre P. Vidal,Ana Kesia F. Freitas,Rafael S. Silva,Verónica B. da Pereira,Antonio Vander Cassaro,Sabrina Menezes,Bruna R. da S. Furlani,Eduardo P. Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models
description	ABSTRACT The efficient use of fodder and grassland as the basis of animal feed represents a way of raising productivity and reducing production costs. In this scenario, elephant-grass stands out among the most used forages in the intensive animal production systems in the world mainly due to its high productive potential, support capacity and nutritional quality. The purpose of this work was to estimate genetic parameters for the selection of elephant-grass (Pennisetum purpureum Schumach.) clones for forage production in two seasons, a period of water restriction and the total period of study. We evaluated 80 accessions of elephant-grass by means of the mixed-models methodology (REML/BLUP). The evaluation of DM yield (DMY) of the different genotypes were executed in edaphoclimatic conditions in Campos dos Goytacazes, Rio de Janeiro, Brazil. The Selegen-REML/BLUP software accomplished the statistical and genetic analyses. It was seen that the DMY trait was with a low estimate of coefficient of genotypic variation (3.08%), which demonstrates possible difficulties with the selection for this trait. Heritability-coefficient estimate was 0.3606 for the dry season and 0.4193 for the total period. Those results were the variation in that trait due to genetic causes. Although those values may not be considered of high magnitude, they are of great interest for the breeding mainly because it is a polygenic trait. In both periods, genotypes 7, 25, 41, 43, 57, 58, 62, 64, 68, and 77 stood out among the others, since it presented the highest genetic gains for DMY, which will enhance progress in the evaluated trait.
author	Stida,Wanessa F. Daher,Rogério F. Viana,Alexandre P. Vidal,Ana Kesia F. Freitas,Rafael S. Silva,Verónica B. da Pereira,Antonio Vander Cassaro,Sabrina Menezes,Bruna R. da S. Furlani,Eduardo P.
author_facet	Stida,Wanessa F. Daher,Rogério F. Viana,Alexandre P. Vidal,Ana Kesia F. Freitas,Rafael S. Silva,Verónica B. da Pereira,Antonio Vander Cassaro,Sabrina Menezes,Bruna R. da S. Furlani,Eduardo P.
author_sort	Stida,Wanessa F.
title	Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models
title_short	Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models
title_full	Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models
title_fullStr	Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models
title_full_unstemmed	Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models
title_sort	estimation of genetic parameters and selection of elephant-grass ( pennisetum purpureum schumach.) for forage production using mixed models
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000200198
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Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models

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