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 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).

Bibliographic Details

Main Authors:	MATIAS, F. I., BARRIOS, S. C. L., VALLE, C. B. do, MATEUS, R. G., MARTINS. L. B., MORO, G. V.
Other Authors:	FILIPE INÁCIO MATIAS, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP) - Campus de Jaboticabal; SANZIO CARVALHO LIMA BARRIOS, CNPGC; CACILDA BORGES DO VALLE, CNPGC; ROGÉRIO GONÇALVES MATEUS, Universidade Federal de Mato Grosso do Sul; LUCAS BEARARI MARTINS, Universidade Estadual de Mato Grosso do Sul - Aquidauana; GUSTAVO VITTI MORO, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP) - Campus de Jaboticabal.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2018-02-26
Subjects:	Brachiaria decumbens, Proteina bruta, Seleção recorrente, Urochloa decumbens, Agronomic traits, Heritability, Recurrent selection, Crude protein,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088153
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