Genetic parameters and predicted gains with selection of interspecific hybrids of Paspalum for seed production

The aim of this study was to estimate the genetic parameters and predicted gains with selection of interspecific hybrids of Paspalum in relation to seed production traits Data were analyzed in randomized block design, with 23 genotypes arranged into ten blocks, according to the methodology of mixed...

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Detalhes bibliográficos
Autores: Lopes, Rodrigo Ramos, Franke, Lucia Brandao, Souza, Cleber Henrique Lopes de, Bertoncelli, Patricia, Graminho, Larissa Arnhold, Pereira, Emerson André
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Brasil
Recursos:Universidade Federal do Rio Grande do Sul (UFRGS)
Repositorio:Repositório Institucional da UFRGS
Idioma:inglés
OAI Identifier:oai:www.lume.ufrgs.br:10183/194275
Acesso em linha:http://hdl.handle.net/10183/194275
Access Level:acceso abierto
Palavra-chave:Capim colchão
Gramínea
Melhoramento vegetal
Seleção genética
Planta forrageira
Produção de sementes
Paspalum plicatulum
Paspalum lepton
REML/BLUP
Heritability
Selective accuracy
Descrição
Resumo:The aim of this study was to estimate the genetic parameters and predicted gains with selection of interspecific hybrids of Paspalum in relation to seed production traits Data were analyzed in randomized block design, with 23 genotypes arranged into ten blocks, according to the methodology of mixed models by the REML/BLUP procedure. The traits considered in the study were: number of total tillers/plant, number of reproductive tillers/plant, number of racemes/inflorescence, number of seeds/inflorescence, weight of a thousand seeds and seed production. Variability among genotypes, high heritability (>0.50), except total tillers (0.44) and number of racemes (0.36), and high accuracy (>0.90) were identified for all traits. The hybrids 10E5052, 10E4026, 10E507, 10E4025 and 10E40104 are among the top ten because they have high genetic values in three or more traits, indicating that these genotypes should be recommended for direct use in planting or potential parents to be used in new crosses.

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