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Oak (Quercus robur L.) and beech (Fagus sylvatica L.) genetic resources conservation in light of climate changes - the croatian research project

Forest genetic resources conservation is necessary due to various factors that cause the loss of tree species genetic variability such as overexploatation, impact of various diseases and pests, hydrological changes as well as climate changes.Croatian Forest Research Institute according to Forest Reproductive Material (FRM) Legislative is Official body for controling of FRM production, market distribution, seed quality, and establishing of seed storage, seed and gene bank of forest trees. The main objective of the project was to create scientific foundations for the conservation of genetic diversity of two major forest tree species in Croatia. The research of the genetic variability were conducted on: i) two international pedunculate oak provenance trials (Forest Administration Našice, Forest office Koška and Forest Administration Karlovac, Forest office Jastrebarsko), ii) international common beech provenance trial (Forest Administration Zagreb, Forest office Zagreb), iii) comon beech seed stands and iv) beech greenhouse trial. The methodologies include a measurment of quantitive traits (heights and diameter growth, flushing phenology and winter leaf retention), assesment of plant disease and pest damages, monitoring of seed crops in forest seed stands, greenhouse drought stress experiment, and laboratory analyses (DNA, physiology, phytopathology and seed quality). The results and conclusions of the research are being prepared for publication in international scientific journals. Compilation of all research results will provide guidelines for conservation of oak and beech genetic resources in light of climate changes in Croatia.

genetic variability, provenance trials, quantitative trials, seed crop

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