Estimate of genetic parameters in Brachiaria decumbens hybrids
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...
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Brazilian Society of Plant Breeding
2016-07-01
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doaj-fb009f210fca4ef59ab7db4b279677502020-11-24T21:28:23ZengBrazilian Society of Plant BreedingCrop Breeding and Applied Biotechnology1518-78531984-70332016-07-01162115122http://dx.doi.org/10.1590/1984-70332016v16n2a18Estimate of genetic parameters in Brachiaria decumbens hybridsFilipe Inácio Matias0Sanzio Carvalho Lima Barrios1Cacilda Borges do Valle2Rogério Gonçalves Mateus3Lucas Bearari Martins4Gustavo Vitti Moro5Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, via de acesso Prof. Paulo Donato Castellane, s/n, 14.884-900, Jaboticabal, SP, BrazilEmbrapa Gado de Corte, Av. Rádio Maia, 830, Zona Rural, 79.106-550, Campo Grande, MS, BrazilEmbrapa Gado de Corte, Av. Rádio Maia, 830, Zona Rural, 79.106-550, Campo Grande, MS, BrazilUniversidade Federal de Mato Grosso do Sul, Cidade Universitária, C. P. 549, 79.070- 900, Campo Grande, MS, BrazilUniversidade Estadual de Mato Grosso do Sul (UEMS), Unidade de Aquidauana, Rod. Aquidauana, km 12, C. P. 25, 79.200-000, Aquidauana, MS, BrazilUniversidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Campus de Jaboticabal, via de acesso Prof. Paulo Donato Castellane, s/n, 14.884-900, Jaboticabal, SP, BrazilThe 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).http://www.sbmp.org.br/cbab/siscbab/uploads/baf46158-e752-3fdd.pdfUrochloa decumbenssignalgrassrecurrent selectionheritability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Filipe Inácio Matias Sanzio Carvalho Lima Barrios Cacilda Borges do Valle Rogério Gonçalves Mateus Lucas Bearari Martins Gustavo Vitti Moro |
spellingShingle |
Filipe Inácio Matias Sanzio Carvalho Lima Barrios Cacilda Borges do Valle Rogério Gonçalves Mateus Lucas Bearari Martins Gustavo Vitti Moro Estimate of genetic parameters in Brachiaria decumbens hybrids Crop Breeding and Applied Biotechnology Urochloa decumbens signalgrass recurrent selection heritability |
author_facet |
Filipe Inácio Matias Sanzio Carvalho Lima Barrios Cacilda Borges do Valle Rogério Gonçalves Mateus Lucas Bearari Martins Gustavo Vitti Moro |
author_sort |
Filipe Inácio Matias |
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 |
publisher |
Brazilian Society of Plant Breeding |
series |
Crop Breeding and Applied Biotechnology |
issn |
1518-7853 1984-7033 |
publishDate |
2016-07-01 |
description |
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). |
topic |
Urochloa decumbens signalgrass recurrent selection heritability |
url |
http://www.sbmp.org.br/cbab/siscbab/uploads/baf46158-e752-3fdd.pdf |
work_keys_str_mv |
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