Data/hora: 02/06/2024 05:42:13

Provedor de dados: | 74
País: | Brazil
Título: | Genetic variation for growth and selection in adult plants of Eucalyptus badjensis
Autores: | Santos,Paulo Eduardo Telles dos; Paludzyszyn Filho,Estefano; Silva,Lorenzo Teixeira de Melo da; Vandresen,Paula Burigo.
Data: | 2015-12-01
Ano: | 2015
Palavras-chave: | Eucalypt; Progeny test; Genetic parameters; Breeding; Genetic gain.
Resumo: | Abstract The aim of this study was to evaluate Eucalyptus badjensis concerning the genetic variation for growth traits and the potential of the species in supporting a breeding programme. The field trial was a provenance/progeny test established in Campina da Alegria, Santa Catarina, Brazil (latitude 26°52′05.1″ S, longitude 51°48′47.5″ W, altitude 1,015 m) in a soil classified as Latossolic Alumino-Ferric Brown Nitosol. The experiment comprised 60 open-pollinated progenies from the provenances Glenbog and Badja State Forest, New South Wales, Australia. Ten replicates and plots with six plants in row were used. At the age of 17 years, 279 trees were assessed for diameter of the bole at breast height (DBH), total tree height (H) and volume of wood with bark (Vol). After submitting the data to statistical genetic analysis, the overall means for DBH, H and Vol were 45.17 cm, 33.30 m and 2.84 m3, and the estimates of additive coefficient of variation [       C V  a(%)] were 12.59%, 5.91% and 26.51%, respectively. Heritability coefficients of additive effects (     h  a 2) were also estimated and the following values were found: 0.443, 0.312 and 0.358. Thirty-nine trees from 25 different progenies were selected. The expected means of the provenances after improvement were 50.02 cm, 34.35 m and 3.47 m3 for DBH, H and Vol, respectively.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400457
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-475738420150041
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.38 n.4 2015
Fonte: | info:eu-repo/semantics/openAccess