Zachovani genetickych zdroju rezistentnich variant smrku ztepileho v Krušných horách – review

In recent years, efforts to mitigate the effects of drought and ongoing environmental changes have focused on preserving and reproducing the unique native genetic resources of Norway spruce from the Ore Mountains. These selected variants have demonstrated remarkable resilience to pollution during periods of high immission load in the region. The successful preservation and vegetative propagation of these resistant variants of Krušné hory Norway spruce have been preserved and propagated vegetatively in ex situ conditions. This review summarizes available references regarding the use and improvement of vegetative propagation methods aimed at recovering and conserving selected clones of resistant variants of Norway spruce in the Ore Mountains, with an emphasis on their practical application in forestry practice. Improvements in vegetative propagation methods have led to the cultivation of secondary cuttings, which exhibit significantly higher vitality compared to primary cuttings. The paper also highlights a practical application of these methods through the revitalization and reconstruction of an old clone archive of resistant Norway spruce variants. This reconstructed clonal archive, having been established in the Krušné hory region under in situ conditions, has emerged as a key outcome of a recently concluded research project in the Ore Mountains.