engleski

Molecular diversity of narrow-leaved ash (Fraxinus angustifolia Vahl) plus trees in Croatia

Research into the molecular diversity was conducted in two clonal seed orchards (Čazma, Nova Gradiška) on 92 plus trees belonging to the two seed regions (seed region upper Sava river, middle Croatia and Kupa river and seed region middle part of the Sava river). Genetic analysis was revealed with eight microsatellite markers (Femsatl 4, Femsatl 8, Femsatl 10, Femsatl 11, Femsatl 16, M2-30, FR639485, FR646655). The aim of the study was to determine the level of molecular diversity of narrow-leaved ash from this two seed regions. Since the plus trees go through a very narrow phenotypic selection the comparison of the obtained genetic parameters from this study and with other research in natural stands concluded that there were no significant interpopulation variability. The highest genetic variability belongs to the intrapopulation level of genetic structure. Bayesian analysis of the population structure of selected genotypes with consideration to the genomic share can not be clearly separated into two seed regions. They are artificially demarcated based on the ecological conditions in which the narrow-leaved ash populations exists, but the obtained genetic structure and variability of selected plus trees indicate their individual variability.

Narrow-leaved ash, plus trees, molecular diversity

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