Estimate of genetic parameters in Brachiaria decumbens hybrids

Estimate of genetic parameters in Brachiaria decumbens hybrids

Abstract The objective of this study was to estimate genetic parameters for agronomic traits and nutritional value in intraspecific hybrids of B. decumbens. For this, a population of 1,415 hybrids was evaluated in field plots at Embrapa Beef Cattle in Campo Grande/MS/Brazil, with seven clippings in order to estimate field green weight (FGW); total dry matter (TDM); speed of regrowth (SR); tiller regrowth density (TRD); regrowth ability (REG); crude protein (CP); in vitro organic matter digestibility (IVD); neutral detergent fiber (NDF) and lignin (LIG). The statistical analyses were carried out using the mixed models methods. Genetic variability for all traits assessed was detected, and estimates of individual heritability were of medium to high magnitude, indicating the possibility of gains with selection. Significant genetic correlations were observed between FGW and TDM (0.99), TDM and SR (0.81), TDM and IVD (-0.71), TDM and LIG (0.71), and CP and IVD (0.70).

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Main Authors: Matias,Filipe Inácio, Barrios,Sanzio Carvalho Lima, Valle,Cacilda Borges do, Mateus,Rogério Gonçalves, Martins,Lucas Bearari, Moro,Gustavo Vitti
Format: Digital revista
Language:English
Published: Crop Breeding and Applied Biotechnology 2016
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332016000200115
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spelling oai:scielo:S1984-703320160002001152016-08-01Estimate of genetic parameters in Brachiaria decumbens hybridsMatias,Filipe InácioBarrios,Sanzio Carvalho LimaValle,Cacilda Borges doMateus,Rogério GonçalvesMartins,Lucas BearariMoro,Gustavo Vitti Urochloa decumbens signalgrass recurrent selection heritability Abstract The objective of this study was to estimate genetic parameters for agronomic traits and nutritional value in intraspecific hybrids of B. decumbens. For this, a population of 1,415 hybrids was evaluated in field plots at Embrapa Beef Cattle in Campo Grande/MS/Brazil, with seven clippings in order to estimate field green weight (FGW); total dry matter (TDM); speed of regrowth (SR); tiller regrowth density (TRD); regrowth ability (REG); crude protein (CP); in vitro organic matter digestibility (IVD); neutral detergent fiber (NDF) and lignin (LIG). The statistical analyses were carried out using the mixed models methods. Genetic variability for all traits assessed was detected, and estimates of individual heritability were of medium to high magnitude, indicating the possibility of gains with selection. Significant genetic correlations were observed between FGW and TDM (0.99), TDM and SR (0.81), TDM and IVD (-0.71), TDM and LIG (0.71), and CP and IVD (0.70).info:eu-repo/semantics/openAccessCrop Breeding and Applied BiotechnologyCrop Breeding and Applied Biotechnology v.16 n.2 20162016-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332016000200115en10.1590/1984-70332016v16n2a18
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 Matias,Filipe Inácio
Barrios,Sanzio Carvalho Lima
Valle,Cacilda Borges do
Mateus,Rogério Gonçalves
Martins,Lucas Bearari
Moro,Gustavo Vitti
spellingShingle Matias,Filipe Inácio
Barrios,Sanzio Carvalho Lima
Valle,Cacilda Borges do
Mateus,Rogério Gonçalves
Martins,Lucas Bearari
Moro,Gustavo Vitti
Estimate of genetic parameters in Brachiaria decumbens hybrids
author_facet Matias,Filipe Inácio
Barrios,Sanzio Carvalho Lima
Valle,Cacilda Borges do
Mateus,Rogério Gonçalves
Martins,Lucas Bearari
Moro,Gustavo Vitti
author_sort Matias,Filipe Inácio
title Estimate of genetic parameters in Brachiaria decumbens hybrids
title_short Estimate of genetic parameters in Brachiaria decumbens hybrids
title_full Estimate of genetic parameters in Brachiaria decumbens hybrids
title_fullStr Estimate of genetic parameters in Brachiaria decumbens hybrids
title_full_unstemmed Estimate of genetic parameters in Brachiaria decumbens hybrids
title_sort estimate of genetic parameters in brachiaria decumbens hybrids
description Abstract The objective of this study was to estimate genetic parameters for agronomic traits and nutritional value in intraspecific hybrids of B. decumbens. For this, a population of 1,415 hybrids was evaluated in field plots at Embrapa Beef Cattle in Campo Grande/MS/Brazil, with seven clippings in order to estimate field green weight (FGW); total dry matter (TDM); speed of regrowth (SR); tiller regrowth density (TRD); regrowth ability (REG); crude protein (CP); in vitro organic matter digestibility (IVD); neutral detergent fiber (NDF) and lignin (LIG). The statistical analyses were carried out using the mixed models methods. Genetic variability for all traits assessed was detected, and estimates of individual heritability were of medium to high magnitude, indicating the possibility of gains with selection. Significant genetic correlations were observed between FGW and TDM (0.99), TDM and SR (0.81), TDM and IVD (-0.71), TDM and LIG (0.71), and CP and IVD (0.70).
publisher Crop Breeding and Applied Biotechnology
publishDate 2016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332016000200115
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