(Ocotea porosa Ness et Martius ex. Nees, Lauraceae) from populations of mixed of mixed Ombrophylous forest

• Autor(a) principal: Kalil Filho, Antonio Nascim
• Data de Publicação: 2004
• Outros Autores: Hirano, Elcio, Sturion, José Alfredo, Sousa, Valderês Aaparecida de, Marzollo, Luiz Gustvo, Nicolotti, Filipe, Ukan, Daniele
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1591
• topic: Seleção; Germoplasma; Ganhos genéticos; Parâmetros genéticos; Melhoramento; Selection; Germplasm; Genetic gain; Genetic parameters; Breeding

Exploitation of imbuya (Ocotea porosa) occurred at the same time of Araucaria angustifolia. Imbuya is threatned of extinction, owns a valuable wood and for these characteristics, Embrapa Florestas, located at Colombo, State of Paraná, Brazil, decided to make efforts for its conservation ex-situ. Collects in Southern Brazil at the localities of Caçador, Canoinhas (State of Santa Catarina), Colombo and Bocaiúva do Sul (State of Paraná) were realized. A complete randomized design was used in 12 months age seedlings. In this experiment, height of thirty one progenies ordered in plots of five plants with four replications was measured. The general mean for height was 16,55 cm. The additive genetic variance estimate was 72,03, the heritability coefficient estimate in the level of average of progenies was 0,83 and selective accuracy was 0,91. Genetic gain will be 48,9% for the next generation of recurrent selection.