Charakterystyka kwitnienia i owocowania oraz ocena produkcyjnosci nasiennej roslin pierwiosnka lekarskiego [Primula veris L.] na Nizinie Wielkopolskiej

The cowslip plants (Primula veris L.) in three natural populations in Wielkopolska flowered on 37.03% to 75.00% of individuals. In all the examined populations most of the cowslip plants had only one generative shoot. The mutual proportion of individuals with pin and thrum flowers was different. The fructifying intensity was rather low, and the real seed production (RSP) varied from 35.80 to 43.81 seeds in one capsule.