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COST Action E 52 - vTI - Bund.de

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Fig. 2: International beech provenance trial Medvednica from the series 2007<br />

The highest average height in year 2000 had provenance P 5 (Sjeverna Babja gora 110.6 cm), P 12<br />

(Vurberg, Slovenia 10 .0 cm) and P 14 (Gračec Lučelnica 104.0 cm). The lowest mean heights were<br />

observed in provenances P 64 (Nižbor, Czech Republic 40.9 cm), P 23 (Torup, Swe<strong>de</strong>n 41.1 cm), P 6<br />

(Bilowo, Poland 41.5 cm) and P 21 (Grasten, Denmark 41.6 cm).<br />

On the basis of conducted research work and by comparing common provenances in the Croatian<br />

and Slovenian trial, it was observed that some provenances showed phenotype stability un<strong>de</strong>r<br />

different site conditions, while on the other hand, some provenances showed specific adaptability to<br />

environmental conditions which prevailed in the two trials. Typical provenances that showed specific<br />

adaptability and quite unstable mean phenotypic values were P 13 (Soignes from Belgium), P 14<br />

(Aarnink from the Netherlands), P 46 (Domažlice from the Czech Republic) and P 6 (Bilowo from<br />

Poland) (Ivanković, Bogdan, Božič 2008).<br />

It should be noted that studies un<strong>de</strong>rtaken on growth traits and flushing phenology in Croatian<br />

provenance trials of the European beech indicate ecotypic pattern of genetic diversity (Jazbec et al.<br />

200 , Ivankovic, Bogdan, Božič 2008) which coinci<strong>de</strong>s with some other results (Comps et al. 1991,<br />

Paule 1995, Gömöry, Hynek, Paule 1998, Chmura, Roźkowski 2002).<br />

5

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