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Repeatability, number of harvests, and phenotypic stability of dry matter yield and quality traits of Panicum maximum jacq. Animal Sciences
Fernandes, Francisco Duarte; Braga, Gustavo José; Ramos, Allan Kardec Braga; Jank, Liana; Carvalho, Marcelo Ayres; Maciel, Giovana Alcântara; Karia, Claudio Takao; Fonseca, Carlos Eduardo Lazarini.
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 4.3.3.3 - Melhoramento de Plantas Forrageiras e Produção de Sementes repeated measures; Selection efficiency; Selection effectiveness..
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32915
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