12(1):45–56. Paper abstract bibtex
To investigate the magnitude and pattern of genetic variation in adaptive seedling traits, seedlings of 126 faniilies from four natural populations of Kazdagi-fir (Abies equituojani) from Kazdagl in Turkey were raised in nursery environments and evaluated for 12 adaptive traits (including growth and phenological traits). Significant population and family within population diflferences were observed for the most studied traits. Although the components of total variation attributable to the families within populations were greater than that of populations, variance components due to populations (range: 0-5.7 '%) and families within populations (range: 0-20.7 'I/)) were low. Estimated family heritabilities were generally low and did not exceed 0.51 (for SURV), but niagnit̃lde of family heritabilities for growth traits suggests (range: 0.17-0.20) that considerable genetic improvement could be achieved if early selection is practiced. Genetic and phenotypic correlations between adaptive traits were in the same direction in sign, but genetic correlations were higher than phenotypic correlations. The families with higher cotyledon num- ber had more growth, in turn, larger seedling size after the first two growing seasons indicating niater- nal effects. The faniilies with later budset and bud burst dates had less growth in the second growing season. Two major Gem M(rtzcigemẽ̃t %oms (GMZ) for Kazdag̃ fir were suggested for in situ conservation program; Giirgendag population as a large-core reserve and Can population as the second one being isolated, genetically less similar to others and having high genetic varaition in adaptive seedling tsaits.