Alexandru, A.M.; Mihai, G.; Stoica, E.; Curtu, A.L. Tree Resilience Indices of Norway Spruce Provenances Tested in Long-Term Common Garden Experiments in the Romanian Carpathians. Plants 2024, 13, 2172. https://doi.org/10.3390/plants13162172
Alexandru, A.M.; Mihai, G.; Stoica, E.; Curtu, A.L. Tree Resilience Indices of Norway Spruce Provenances Tested in Long-Term Common Garden Experiments in the Romanian Carpathians. Plants 2024, 13, 2172. https://doi.org/10.3390/plants13162172
Alexandru, A.M.; Mihai, G.; Stoica, E.; Curtu, A.L. Tree Resilience Indices of Norway Spruce Provenances Tested in Long-Term Common Garden Experiments in the Romanian Carpathians. Plants 2024, 13, 2172. https://doi.org/10.3390/plants13162172
Alexandru, A.M.; Mihai, G.; Stoica, E.; Curtu, A.L. Tree Resilience Indices of Norway Spruce Provenances Tested in Long-Term Common Garden Experiments in the Romanian Carpathians. Plants 2024, 13, 2172. https://doi.org/10.3390/plants13162172
Abstract
Provenance trials provide a valuable opportunity to evaluate the impact of extreme events on growth and wood properties. In this study, we have evaluated 81 Norway spruce provenances, tested in three provenance trials established in the Romanian Carpathians in 1972. The response to drought of the Norway spruce provenances – resistance, recovery, resilience, and relative resilience, has been examined, as well as the relationship between climate and growth, and the correlations between wood traits, the coordinates of origin and drought resilience indices. In each provenance trial, there were significant differences between provenances and years regarding wood widths and latewood percentage (LWP). Regarding the drought extreme events, the years when it occurred in all three provenance trials were 2000 and 2003. Significant differences between provenances for at least one drought resilience index have been found in all provenance trials, for the year 2000. By using subperiods of 25 years, changes in the relationship between climate and growth have been observed. Several provenances with high radial growth and good resistance and/or recovery have been identified. Provenances that performed better in common garden experiments could be used in assisted migration even beyond the current natural range.
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