Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1077409
Research center of Embrapa/Collection: Embrapa Gado de Corte - Artigo em periódico indexado (ALICE)
Date Issued: 2017
Type of Material: Artigo em periódico indexado (ALICE)
Authors: FERNANDES, F. D.
BRAGA, G. J.
RAMOS, A. K. B.
JANK, L.
CARVALHO, M. A.
MACIEL, G. A.
KARIA, C. T.
FONSECA, C. E. L. da
Additional Information: FRANCISCO DUARTE FERNANDES, CPAC; GUSTAVO JOSE BRAGA, CPAC; ALLAN KARDEC BRAGA RAMOS, CPAC; LIANA JANK, CNPGC; MARCELO AYRES CARVALHO, CPAC; GIOVANA ALCANTARA MACIEL, CPAC; CLAUDIO TAKAO KARIA, CPAC; CARLOS EDUARDO LAZARINI DA FONSECA, CPAC.
Title: Repeatability, number of harvests, and phenotypic stability of dry matter yield and quality traits of Panicum maximum jacq.
Publisher: Acta Scientiarum. Animal Sciences, Maringá, v. 39, n. 2, p. 149-155, April-June, 2017.
Language: en
Notes: Título em português: Repetibilidade, número de colheitas e estabilidade fenotípica da produção de matéria seca e de características de qualidade de Panicum maximum jacq.
Keywords: Repeated measures
Selection efficiency
Selection effectiveness
Medida repetida
Eficiência de seleção
Eficácia de seleção
Description: Selection of superior forage genotypes is based on agronomic traits assayed in repeated measures. The questions are how repeatable the performance of individual genotypes is and how many harvests are needed to select the best genotypes. The objectives were to estimate repeatability coefficients of dry matter yield (DMY) and forage quality, their phenotypic stability and the number of harvests needed for an accurate selection. Two randomized complete block design experiments data with 24 genotypes each, undergoing 12 and 16 harvests, over a period of 2 and 3 years, respectively, were used. The DMY repeatability estimates ranged from 0.42 to 0.55, suggesting a low heritability. The mean numbers of repeated measures were 5 and 7 harvests for 0.80 and 0.85 accuracy, respectively. The inclusion of the first two harvests negatively affects the estimates. Repeatability for quality traits ranged from 0.30 to 0.69, indicating low to moderate heritability.
Thesagro: Pastagem
Genótipo.
Panicum maximum
Pastejo
Matéria seca
NAL Thesaurus: Grazing
Megathyrsus maximus.
Cultivars
Data Created: 2017-10-13
Appears in Collections:Artigo em periódico indexado (CNPGC)


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