Repeatability and genotypic stability of agronomic characteristics in Panicum maximum Jacq.

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dc.creatorMariane Rodrigues Ferreira
dc.creatorJanaina Azevedo Martuscello
dc.creatorThiago Gomes dos Santos Braz
dc.creatorArtur Amaral Nascimento
dc.creatorLiana Jank
dc.creatorJuliana Aparecida de Assis
dc.creatorOtávio Goulart de Almeida
dc.creatorGabriel de Assis Reis
dc.creatorMárcia Vitória Santos
dc.creatorMatheus Figueiredo Santos
dc.date.accessioned2022-09-27T15:03:49Z
dc.date.accessioned2025-09-08T23:18:41Z
dc.date.available2022-09-27T15:03:49Z
dc.date.issued2019
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doi10.4067/S0718-58392019000400547
dc.identifier.issn0718-5839
dc.identifier.urihttps://hdl.handle.net/1843/45598
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofChilean Journal of Agricultural Research
dc.rightsAcesso Aberto
dc.subjectPlantas forrageiras
dc.subjectCapim-guiné
dc.subjectForragem
dc.subjectGenética vegetal
dc.titleRepeatability and genotypic stability of agronomic characteristics in Panicum maximum Jacq.
dc.typeArtigo de periódico
local.citation.epage556
local.citation.issue4
local.citation.spage547
local.citation.volume79
local.description.resumoIn experiments with selection of perennial plants, the initial performance is expected to be maintained throughout the productive life. The probability of repeating the agronomic response can be evaluated by the repeatability coefficient. The objective was to estimate repeatability coefficients of agronomic characteristics in Panicum maximum Jacq. using different methods and identify the best combinations between harvests according to the genotypic stabilization. Seventeen genotypes were evaluated in a randomized complete block design with three replicates. The coefficients of repeatability were estimated by the methods: ANOVA, structural analysis based on the mean of the correlation coefficients (SACOR), analysis of principal components based on the covariance matrix (PCCOV) and correlation matrix (PCCOR). In the genotypic stabilization, coefficients estimated by ANOVA and PCCOR were used. For total DM, repeatability coefficients ranged from 0.3500 to 0.4300 by the ANOVA and PCCOR methods, respectively. High repeatability coefficients were found for the characteristic leaf DM, while low coefficients were observed for leaf and stem percentages and leaf:stem ratio. For the genotypic stabilization of total DM and leaf:stem ratio, the best coefficients were observed for the combination of harvests 5 to 8. There are variations in the estimate of repeatability by different methods and the highest coefficients were those of the principal components based on the correlation and covariance matrices. For the genotypic stabilization, the best coefficients of repeatability and determination were observed for the harvests performed in the second rainy period.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.initialsUFMG
local.url.externahttps://www.scielo.cl/scielo.php?pid=S0718-58392019000400547&script=sci_arttext&tlng=pt

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