Comparative investigation of cultivated Hypericum perforatum L. local populations in Serbia
2006
Radanovic, D. | Nastovski, T. | Pljevljakušic, D.
In a period of two years, pre-selected St. John s Worth (Hypericum perforatum L.) local populations V2 (origin: Slovakia), V3 (origin: Bulgaria) and D4 (origin: West Serbia) were tested for herb yield, hypericin yield and content and intensity of wilting disease, in two localities in Serbia. Cultivation was established in spring, through winter nursery plant production. In lowland climatic conditions, two harvests obtained in year I yielded 1,070-2,440 kg per ha, while in mountainous climatic conditions there was just one harvest yielding 220-720 kg per ha of dry herb. In general, the best yields of dry herb in year 11 were produced by the local population D4 (about 2000 kg per ha of dry herb) above all due to a better tolerance to wilting disease, unfavourable climatic conditions and better plant density preservation in comparison with two other tested local populations. The lowest hypericin yield was recorded in the first harvest of the first vegetation (0.3-1.3 kg per ha) and the highest one in the first harvest of the second vegetation (1.7-3.8 kg per ha). Due to the best yield of dry herb and satisfactory hypericin content, local population D4 stands out as the best source of hypericin among all tested local populations. Intensity of wilting disease was lower in mountainous locality, which means that the mountainous climatic conditions impose themselves as a better solution to growing H. perforatum in terms of avoidance of wilting disease.
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