Repeatability and genotypic stability of agronomic characteristics in Panicum maximum Jacq
| Autor: | Thiago Gomes dos Santos Braz, Márcia Vitória Santos, Otávio Goulart de Almeida, Liana Jank, Mariane Rodrigues Ferreira, Juliana Aparecida de Assis, Mateus Figueiredo Santos, Artur Amaral Nascimento, Janaina Azevedo Martuscello, Gabriel de Assis Reis |
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| Přispěvatelé: | Mariane Rodrigues Ferreira, Unicersidade Estadual Paulista, Jabotical, Janaina Azevedo Martuscello, Universidade Federal de São João del-Rei, São João del-Rei, MG, Thiago Gomes dos Santos Braz, Universidade Federal de Minas Gerais, Montes Claros, MG, Artur Amaral Nascimento, Universidade Estadual do Sudoeste da Bahia, Itapetinga, BA, LIANA JANK, CNPGC, Juliana Aparecida de Assis, Universidade de São Paulo, Piracicaba, SP, Otávio Goulart de Almeida, Universidade de São Paulo, Piracicaba, SP, Gabriel de Assis Reis, Universidade de São Paulo, Piracicaba, Márcia Vitória Santos, Universidade Fexderal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, MATEUS FIGUEIREDO SANTOS, CNPGC., Universidade Estadual Paulista (Unesp), Univ Fed Sao Joao del Rei, Universidade Federal de Minas Gerais (UFMG), Univ Estadual Sudoeste Bahia, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Universidade de São Paulo (USP), Universidade Federal de Viçosa (UFV) |
| Rok vydání: | 2019 |
| Předmět: |
Genótipo
Randomized block design Forage Stability (probability) Genetic correlation Pastagem repeated measures Forragem Plantas forrageiras Statistics Mathematics stem ratio [leaf] biology Genética vegetal Pastures Covariance matrix Repeatability biology.organism_classification Capim-guiné Principal component analysis Panicum Maximum Animal Science and Zoology Agronomy and Crop Science Panicum |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Repositório Institucional da UFMG Universidade Federal de Minas Gerais (UFMG) instacron:UFMG Chilean journal of agricultural research v.79 n.4 2019 SciELO Chile CONICYT Chile instacron:CONICYT Chilean journal of agricultural research, Volume: 79, Issue: 4, Pages: 547-556, Published: DEC 2019 Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 0718-5839 |
| DOI: | 10.4067/s0718-58392019000400547 |
| Popis: | Made available in DSpace on 2020-12-10T16:59:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-10-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Pro-reitoria de Pesquisa e Pos-graduacao from Universidade Federal de Minas Gerais In 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. Univ Estadual Paulista, Via Acesso Prof Paulo Donato Castelane, Jaboticabal, SP, Brazil Univ Fed Sao Joao del Rei, Ave Visconde do Rio Preto S-N, Sao Joao Del Rei, MG, Brazil Univ Fed Minas Gerais, Ave Univ 1000, Montes Claros, MG, Brazil Univ Estadual Sudoeste Bahia, Praca Primavera 40, Itapetinga, BA, Brazil Embrapa Gado Corte, Empresa Brasileira Pesquisa Agr, Campo Grande, MS, Brazil Univ Sao Paulo, Av Padua Dias 11,Cx Postal 9, Piracieaba, SP, Brazil Univ Fed Vales Jequitinhonha & Mucuri, Rodovia MGT 367 Km 583,5000 Alto Jacuba, Diamantina, MG, Brazil Univ Estadual Paulista, Via Acesso Prof Paulo Donato Castelane, Jaboticabal, SP, Brazil CAPES: 001 |
| Databáze: | OpenAIRE |
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