This study was carried out at three different forest sites in Syria in order to
determine the effect of changing rainfall, temperature and soil on kernel
productivity of stone pine (Pinus pinea L.)> these sites included: Jabal Alnabi
Mata, (Tartou
s province, L1), Dahr Alkhoser (Homs province, L2) and E′en
Jron site (Idleb province, L3). Results showed that kernel productivity of stone
pine per tree was 236.3, 252.8, 143 g per tree, and 177, 162.3, and 86.98 kg per
hectare in L1, L2, and L3, respectively. These differences were attributed due
to the variation in the composition, textured and fertility of the soil available in
the three locations studied. It was concluded that trees of stone pine grow better
and superior in Kernel productivity in humid and super-humid bioclimatic
zone.
Seeds of Pinus pinea L .were collected from AL Kusaibia site near Aleppo
(altitude ٢٩٥m) and from AL Bustan site near Mesiaf (altitude ٨٠٠m). which
have different ecological conditions in order to recommend the best optimal
treatment for breaking
the coat dormancy stage of seeds pre-sowing in both
sites. Six different methods of treatment suchas, mechanical treatment,
treatment with boiling water, treatment with light sucher acid (H٢SO٤) for ١٥,
٣٠, ٤٥ minutes, and with normal water for ٢٤ hours. were applied to break the
coat dormancy of ٦٠٠ seeds in each sites.
