%0 Research article
%T The impact of over-exploitation on the genetic structure of Turkish red pine (Pinus brutia Ten.) populations determined by RAPD markers
%A Lise, Yildiray
%A Kaya, Zeki
%A Isik, Fikret
%A Sabuncu, Rumi
%A Kandemir, Irfan
%A Önde, Sertaç
%D 2007
%J Silva Fennica
%V 41
%N 2
%R doi:10.14214/sf.291
%U https://silvafennica.fi/article/291
%X To determine the possible impact of over-exploitation on the genetic  structure of Turkish red pine (Pinus brutia Ten.) populations, three  natural and three over-exploited (human degraded) populations of the  species in the Mediterranean region of Turkey were investigated with  Randomly Amplified Polymorphic DNA (RAPD). With the 80 RAPD primers  tested, 12 of them yielded 137 polymorphic RAPD fragments. Four of the  studied populations maintained unique fragments. The mean proportion of  polymorphic fragments for all populations ranged from 89.8 to 98.9% and  there were no significant differences between natural (94.8%) vs.  over-exploited populations (92.7%). The estimated heterozygosity values  suggested that Turkish red pine maintains high levels of genetic  diversity (range 0.24–0.28) though studied populations and grouped ones  as natural (H<sub>e</sub> = 0.28) vs. over-exploited (0.27) did not differ significantly. The mean F<sub>ST</sub> value indicated that the large portion of the total genetic diversity  was within populations (93%), but this value was lower in the natural  populations (92%) than in the over-exploited ones (94%). In  over-exploited populations, excess of homozygosity was observed (about  6% higher) as compared to natural populations, indicating impacts of  inbreeding in P. brutia.