Effect of Different Treatments on the Braking seed dormancy and Germination Indices in Medical Species of Glycyrrhiza glabra L.

The Glycyrrhiza glabra plant is a medicinal plant and it is used in pharmaceutical industries due to some compounds such as glycerolysis. The aim of this study was to investigate the effects of different treatments on different germination indices of Glycyrrhiza glabra L. species under laboratory conditions. Boiling water treatments, seed storage in heat and cold, non-treated (control) and culture in soil with 5 replications were applied on sweet seeds of expression. During different days, the number of germinated seeds was counted to a constant. Results showed that there were in Root, Shoot and Plant Length; Germination Percent; Germination Speed; Mean Germination Time and Allometric Coefficient. Results in the soil showed that the Root, Shoot and Plant Length were the highest, Allometric Coefficient and Germination Percentage has the lowest , Allometric Coefficient determined that stem and root growth in soil are in equilibrium. In maintenance treatment in boiling water, Germination Percent; Germination Speed and Allometric Coefficient had the highest amount, Mean Germination Time has the lowest. The results of boiling Treatment indicated that more than 40% of seeds germinated and were ranked first compare to other treatments. Treatments in freezer and oven heating compared to control treatment did not affect the rate of seed germination characteristics. Therefore, in general, it can be said that the presence of soil has led to better rooting and plant growth than other treatments, and the treatment of water-boiling water for five minutes by softening the shell can improve the Performance of seed germination characteristics.