Abstract
Hypericum genus is commonly used as a medicinal plant for its anti-depressant properties. Harvesting such medicinal plants from the nature is causing a loss of genetic diversity. Plants with very small seeds like Hypericum triquetrifolium Turra cannot be cultured by traditional methods, easily. In the present study, a rapid micropropagation protocol was developed for Hypericum triquetrifolium Turra. Native seeds, collected from Kaz Mountains in Egean region of Turkey were used as starting material. Water-agar (89%) germinated six weeks old seedlings were placed in ten different medium. The most intensive shoot multiplication rate per explant was recorded at 5.95 on the MS medium supplemented with 1.25 mg/L Thidiazuron (TDZ) plus 0.5 mg/LIndole-3-acetic acid (IAA). Root development (5-6 per shoot) was obtained on Murashige and Skoog (MS) medium supplemented with 1 mg/L IAA. After rooting in vitro , the plantlets morphologically similar to mother plants were easily acclimatized within a month and survived (93%) upon transfer to greenhouse conditions.
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