AI Article Synopsis
- Provenance trials are important for assessing how extreme weather impacts growth and wood properties in Norway spruce.
- The study analyzed 81 spruce varieties from trials in the Romanian Carpathians, focusing on their response to drought using various resilience indices.
- Significant differences were found among provenances in wood traits and resilience during drought years, highlighting the potential for using superior varieties in assisted migration strategies.
Article 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 has been examined using the following tree resilience indices: resistance, recovery, resilience, and relative resilience. The relationship between climate and growth, the correlations between wood traits, and the coordinates of the origin and tree resilience indices were also analysed. In each provenance trial, there were significant differences between provenances and years regarding wood widths and latewood percentage (LWP). Regarding drought extreme events, the years when they occurred in all three provenance trials were 2000 and 2003. Significant differences between provenances for at least one tree 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 in the proximity of the current natural range.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11360809 | PMC |
| http://dx.doi.org/10.3390/plants13162172 | DOI Listing |
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