Improving Germination Rate of Coastal Glehnia by Cold Stratification and Pericarp Removal

The medicinal plant, coastal glehnia (Glehnia littoralis F. Schmidt ex Miq.), belongs to the Apiaceae, which is known exhibit morpho-physiological seed dormancy (MPD). In this study, we aimed determine type of along with conditions for breaking dormancy, and how increase its germination rate mass production. Initially, seeds had undeveloped embryos, gradually developed following cold (5 °C) stratification over eight weeks. embryo (E:S) ratio increased 66.7%, confirming that MPD type. Coastal pericarp did not show inhibited water uptake, inhibitory chemicals were detected. However, removal improved final percentage, speed, T50 compared those at 20 °C, showed highest value other temperature treatments. Thus, 5 °C weeks removing germinating maintained efficient ways break improve production glehnia.