Journal of Plant Sciences1816-4951xxxx-xxxxxAcademic Journals Inc.10.3923/jps.2006.182.186Hypericum perforatum L.) Growing in Northern Turkey]]>AyanAli KemalKizilkayaRidvan CirakCuneyt KevserogluKudret 3200613Hypericum perforatum L. plants representing a total of 35 wild populations were collected from Black Sea region of Turkey at flowering stage and subsequently assayed for some heavy metal contents, namely Cu, Mn, Fe, Zn and Pb. The results of chemical analysis of plant samples revealed that total individual plant contents in these wild populations were 1.81-10.09 μg Cu g-1mean:6.34), 197.88-9.10 μg Mn g-1 (mean:39.26), 2990.21-54.16 μg Fe g-1 (mean:434.34), 181.60-12.91 μg Zn g-1 (mean:68.31) and 124.76-12.04 μg Pb g-1 (mean:47.51), respectively. According to the results of variance analysis, heavy metal contents of H. perforatum plants varied with sites to a large scale and this variation was found to be significant statistically.]]>Andrew, A.S., A.J. Warren, A. Barchowsky, K.A. Temple and L. Klei et al.,2003111825835Barnes, J., L.A. Anderson and J.D. Phillipson,2001Hypericum perforatum L.): Review of its chemistry, pharmacology and clinical properties]]>53583600Biffignandi, P.M. and A.R. Bilia,2000Hypericum perforatum L.) drug interactions and their clinical significance]]>61389394Cirak, C., A. Ayan, K. Kevseroglu and O. Caliskan,2004Hypericum perforatum L.) seeds exposed to different light intensities and illumination periods.]]>4279282Cirak, C. and K. Kevsero-lu,2004Hypericum perforatum L.)]]>197483Gomez, M.R., S. Cerutti, R.A Olsina, M.F. Silva and L.D. Martinez,2004Hypericum perforatum pharmaceutical derivatives by atomic absorption and emission spectrometry]]>34569576Kirakosyan, A., T.M. Sirvent, D.M. Gibson and P.B. Kaufman,2004in vitro cultures of St. John's wort (Hypericum perfotarum).]]>397181Murch, S.J., P. Vasantha and P.K. Saxena,2003Hypericum perforatum L.).]]>49251257Salt, D.E., M. Blaylock, N.P.B.A. Kumar, V. Dushenkov, B.D. Ensley, I. Chet and I. Raskin,199513468474Sanchez-Mateo, C.C., B. Prado and R.M. Rabanal,2002Hypericum species from the Canary Islands.]]>79119127Sirvent, T., L. Walker, N. Vance and G. Donna,2002Hypericum perforatum L. in the Pasific Northwest of the USA.]]>564148Andriano, D.C.,1986pp: 533pp: 533Greeger, M.,19991999pp: 1-29pp: 1-29Kabata-Pendias, A. and H. Pendias,19922nd Edn.,Pages: 365Pages: 365Kacar, B.,1972pp: 127-156pp: 127-156