Open AccessGenetic parameters in a clonal test of Tectona grandis in Mato Grosso, Brazil
Author(s) -
Ana Carolina Vieira Zakir Pereira,
Sidney Fernando Caldeira,
Daniele Aparecida Alvarenga Arriel
Publication year - 2021
Publication title -
advances in forestry science
Language(s) - English
Resource type - Journals
eISSN - 2359-6570
pISSN - 2357-8181
DOI - 10.34062/afs.v8i2.11234
Subject(s) - tectona , clonal selection , biology , genetic gain , selection (genetic algorithm) , randomized block design , tree breeding , forestry , seed orchard , diameter at breast height , statistics , genetic variation , horticulture , mathematics , botany , woody plant , geography , genetics , computer science , artificial intelligence , gene , immunology
Teak (Tectona grandis) is a high-value timber species in tropical regions. In Brazil, although teak has a high productivity, there are few studies related to its genetic improvement. This work aimed to estimate genetic parameters and evaluate potential gains of selection in a clonal test of teak installed in the state of Mato Grosso, Brazil. The experimente is in a randomized block design, with five replications, 3x3 m spacing, 22 treatments, and plots with six individuals. At five years, the genotypes were evaluated for survival (S), tree total height (H) and girth at breast height (GBH). There was significance and feasibility of selection for S and GBH. For H, the result was not significant, indicating few gains with the selection. The genetic parameters of clonal mean heritabilities and accuracy were of moderate magnitude for S and GBH and low for H. To best of our knowledge, this is the first work that estimates genetic parameters in a clonal teak test in the field in Brazil.