Repeatability, number of harvests, and phenotypic stability of dry matter yield and quality traits of Panicum maximum jacq.

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dc.contributorFRANCISCO 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.
dc.creatorFERNANDES, F. D.
dc.creatorBRAGA, G. J.
dc.creatorRAMOS, A. K. B.
dc.creatorJANK, L.
dc.creatorCARVALHO, M. A.
dc.creatorMACIEL, G. A.
dc.creatorKARIA, C. T.
dc.creatorFONSECA, C. E. L. da
dc.date2017-10-14T10:33:19Z
dc.date2017-10-14T10:33:19Z
dc.date2017-10-13
dc.date2017
dc.date2017-10-24T11:11:11Z
dc.date.accessioned2026-07-07T03:40:00Z
dc.descriptionSelection 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.
dc.descriptionTítulo em português: Repetibilidade, número de colheitas e estabilidade fenotípica da produção de matéria seca e de características de qualidade de Panicum maximum jacq.
dc.identifierActa Scientiarum. Animal Sciences, Maringá, v. 39, n. 2, p. 149-155, April-June, 2017.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1077409
dc.identifier.urihttp://hdl.handle.net/123456789/440169
dc.languageeng
dc.rightsopenAccess
dc.subjectRepeated measures
dc.subjectSelection efficiency
dc.subjectSelection effectiveness
dc.subjectMedida repetida
dc.subjectEficiência de seleção
dc.subjectEficácia de seleção
dc.subjectPanicum maximum
dc.subjectPastejo
dc.subjectMatéria seca
dc.subjectGenótipo
dc.subjectPastagem
dc.subjectMegathyrsus maximus
dc.subjectCultivars
dc.subjectGrazing
dc.titleRepeatability, number of harvests, and phenotypic stability of dry matter yield and quality traits of Panicum maximum jacq.
dc.typeArtigo de periódico

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