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ŠUMARSKI LIST 11-12/2009 str. 26     <-- 26 -->        PDF

D. Ballian, E. Mujanović,A. Čabaravdić: VARIJABILNOSTI OBIČNOG BORA(Pinus sylvestris L.) ... Šumarski list br. 11–12, CXXXIII (2009), 577-588

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SUMMARY: Experimental regional division of Scots pine (Pinus sylvestris
L.) in Bosnia and Herzegovina was initiated with development of framework of
the program “Revision of existing and selection of new seed stands, and study
of biological traits of Norway spruce, silver fir, Scots pine and European black
pine in the function of production of qualitative seed needed for forestry in
SRBiH”. During 1989 test surface in Glasinac filed – Sokolac was established
with 11 provenances, material from two seed plantations and control group.

Research was carried out on diameters, basal areas, heights, volume of
medium tree, and total volume per ha of trees which are 21 years old.

Analyses carried out on size of medium diameter, basal area, height, and
volume on the test surface showed that provenance Romanija-Glasinac had
best results. Taking into consideration poor conditions in the place of origin of
this population, conclusion could be made that their good results were obtained
based on the extremely competitive selection in the unfavorable conditions,
and on qualitative genetic construction.

Although the trait of survival is not statistically processed because it belongs
to the group of qualitative traits, it is very significant because it does not
have direct influence to the trait of volume per ha. The best survival was demonstrated
by the provenance Romanija-Glasinac, and the poorest by the provenance
Zavidovići with minimal portion of survived plants.

Statistically significant difference was determined by analysing the height
of trees in the test surface, meaning that differentiation between the provenances
is still present on the test surface. The best provenances are Romanija-
Glasinac, Šipovo, and Bugojno.

According to the soil type, which is in this case brown limestone (calcocambisol),
sea level, and ecological conditions at the Glamoč plateau, the
best provenance is Romanija – Glasinac which has the best productivity under
these conditions.

Obtained medium heights for Scots pine in this experiment showed that
some provenances go above site class I. if they are compared with data from
volumetric tables for even aged forests. According to the Wiedemann’s volumetric
tables, the provenance Romanija – Glasinac is significantly larger in
regards to average basal area and volume from volumetric tables for the site
class I. of habitat.

Reliable conclusions about productive possibilities of some species, and of
a provenance inside some species, can be made only after one third of estimated
fertilization. Having that in mind, obtained results up to now are only partially
reliable when making conclusions about which provenance is the best
for introduction on the defined habitat while good conclusions will be reached
in the following period.

Present variability intra and inter provenances, which is registered in this
experiment, can be used for subsequent selections of material when installing
intensive clone or seed plantation.

Key words:Scots pine, provenance trial, diameter, bosal area, volume