Plasticity and stability of hybrid aspen clones in 14 field trials over Sweden, Finland and north-west Russia

Abstract The study aimed at estimating the genotype × environment (G E) interaction, stability and plasticity parameters for height growth survival of hybrid aspen ( Populus tremula L. tremuloides Michx.) clones. A set 17 clones were studied age four in 11 field trials (series 1) a 12 three 2) Sweden, Finland north-west Russia. There was an intermediate significant correlation between ranks years, showing modest G E interaction tree height. corresponding weak insignificant, indicating stronger than parameter S ) showed large differences among index PI values ranged from 0.6 to 0.8 clones, demonstrating high levels phenotypic plasticity.