Abstrait

Variations Among Families of Fraxinus ornus L.

Nurdan Gungor, Selin Tekocak, Cagla Yilmazer, Ayse Zeliha Erat and Nebi Bilir

Progeny test is one the most important stages of tree breeding programme to obtain higher quality and quantity forest product per area. It has also valuable contribution for future management practices of forest tree populations. Variations among families, estimate narrow-sense heritability (hi 2), and correlations were examined in sixth year field test of a progeny test in Manna ash (Fraxinus ornus L.) based on seedling height, root collar diameter, and also survival. Averages of survival, seedling height and root collar diameter were 78.1%, 161.7 cm and 2.3 cm, respectively, while there was large difference among families and within family for the characteristics. Significant differences (pï‚£0.05) were found among the families for root collar diameter according to results of analysis of variance. Significant phenotypic correlations (pï‚£0.05, r=0.644) were found only between seedling height and root collar diameter according to results of correlation. The narrow-sense heritability (hi 2) was 0.382 for seedling height, 0.051 for root-collar diameter.