Evaluation of St. John's wort (Hypericum perforatum L.) collection
Katarzyna Seidler-Łożykowska, Kazimierz Kaźmierczak
Breeding and Agricultural Laboratory
The Research Institute of Medicinal Plants
Libelta 27, 61-707 Poznań, Poland
St. John’s wort is a perennial medicinal plant commonly cultivated in Poland. St. John’s wort herb, collected
at the beginning of its flowering, has a broad spectrum of medical applications. In recent years St. John’s
wort plantations have been infected by fungi Colletotrichum gleosporioides (Penz.), which has caused
necrosis of whole plants. In the Research Institute of Medicinal Plants (RIMP) a collection of 10 accessions
was gathered to evaluate their morphological traits, secondary metabolites content and resistance to pathogen
in comparison with cultivar ‘Topaz’. The two-year evaluation of the collection made it
possible to select accession nr 7, coming from Czarny Las near Ostrzeszów, whose plants showed
C. gleosporioides tolerance and a high content of secondary metabolites.
Seidler-Łożykowska K., Kaźmierczak K., 2005. Evaluation of St. John's wort (Hypericum perforatum L.)
collection. Folia Horticulturae 17/1: 101-108.