Abstract

Interactions for density, branch angle, and stem straightness were small within the two regions. Overall, branch angle had the least GxE, followed by density and stem straightness. Growth traits (tree diameter and branch size) tended to be the most interactive with substantial GxE present. Genotype by regional interactions (Mainland versus Tasmania) revealed that density and branch angle had the least interactions ((r) over cap (B) = 0.98 and (r) over cap (B) = 0.95, respectively). Branch size and tree diameter had the highest interactions among the two regions ((r) over cap (B) = 0.55 and (r) over cap (B) = 0.63, respectively). Within Tasmania, only branch size and tree diameter had a sizable interaction within the three sites. In contrast, there was little interaction for tree diameter among the Mainland trials. Branch size in the Mainland trials had a similar size of interaction as in Tasmania. Further research is recommended in identifying the cause of GxE for tree diameter and branch size in radiata pine across the entire radiata pine estate in Australia.

Keywords

heritability; genetic correlations; genotype by environment interaction; Pinus radiata; growth; wood quality

Published in

Silvae Genetica
2010, Volume: 59, number: 2-3, pages: 113-124
Publisher: J D SAUERLANDERS VERLAG

UKÄ Subject classification

Forest Science


Publication identifier

DOI: https://doi.org/10.1515/sg-2010-0014

Permanent link to this page (URI)

https://res.slu.se/id/publ/43272