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Provedor de dados:  PAB
País:  Brazil
Título:  Stability and adaptability for wood volume in the selection of Eucalyptus saligna in three environments
Autores:  Oliveira,Thiago Wendling Gonçalves de
Paula,Rinaldo Cesar de
Moraes,Mario Luiz Teixeira de
Alvares,Clayton Alcarde
Miranda,Aline Cristina
Silva,Paulo Henrique Muller da
Data:  2018-05-01
Ano:  2018
Palavras-chave:  Forest breeding
Genetic selection
Genotype × environment interaction
Resumo:  Abstract: The objective of this work was to evaluate the genotype x environment (GxE) interaction in open-pollinated Eucalyptus saligna progenies for simultaneous selection for greater stability and adaptability for wood volume, as well as to compare the selection strategies through combined and individual analyses in three environments. Three experiments were conducted in a randomized complete block design, with four replicates and six plants per plot, with 102 to 122 progenies. Three years after planting, survival rate and wood volume were evaluated. The genetic parameters were estimated by the maximum restricted likelihood and best linear unbiased prediction (REML/Blup) methods, and the stability and adaptability analysis was conducted using the harmonic mean of the relative performance of genetic values (HMRPGV). The highest survival rate (82%) was observed in Sabinópolis and the highest volume (120 m³ ha-1) in Lençóis Paulista. The mean heritability of progenies for the two analyzed variables was considered high, and the genetic correlations between survival rate and volume were weak for all sites. The G×E interaction was significant and of the complex type, with genotype correlation between sites of 47%, indicating that the ranking of the best progenies differed in each studied environment. The analysis of stability and adaptability indicated the possibility of selecting progenies with good performance in the three environments; however, to improve the quality of the evaluated characteristics, it is necessary to select specific progenies for each environment.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira
Relação:  10.1590/s0100-204x2018000500010
Formato:  text/html
Fonte:  Pesquisa Agropecuária Brasileira v.53 n.5 2018
Direitos:  info:eu-repo/semantics/openAccess

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