Türkiye Quercus L. (Fagaceae) türlerinin Ilex seksiyonu üzerine karşılaştırmalı biyosistematik çalışma

Evergreen Quercus taxa are placed in Ilex section. This section contains Q. ilex, Q. coccifera and Q. aucheri which is distributed only in Turkey, and in some East Aegean islands of Greece. However, Q. coccifera and Q. aucheri usually confused with each other. For this reason, species boundary of Q. aucheri and its biosystematic features are not known well. On the other hand, Q. coccifera and Q. calliprinos are accepted as different species by some researchers or sometimes they can be referred as the same species but two subspecies. Thus, the real phenetics and phylogenetics relations among these species have not still been fully explained.Due to having hybrids among the taxa which belong to Ilex section and complex vegetative variations cause problems and make difficult to determine the borders of taxa. In order to solve this problem, variations within and between populations of taxa were pointed out by using some statistical analyses. According to the results of statistical analyses, it was attempted to draw the most possible borders of taxa. Furthermore, those vegetative characters which show high correlation with each other were selected and involved in morphometric analyses. As a result, a phenetic classification, which based on vegetative characters, was carried out. Likewise, a molecular but phenetic classification was produced based on the DNA bands obtained from RAPD analyses too. Finally; comparison within and among species was made with cytogenetic study. Congruence between morphology, molecular, and cytogenetic results was compared to make a better phenetic classification.Key words: Quercus, Section Ilex, Biosystematics, Cytogenetic, RAPD.