Fig. 7From: Modifications in steroid and triterpenoid metabolism in Calendula officinalis plants and hairy root culture in response to chitosan treatmentThe length (A) and dry weight DW (B) of C. officinalis plant roots. C- control, CH- chitosan elicited samples. Bars which do not share a common letter are significantly different. Capital letters indicate significant difference in time between plants from the same treatment, lowercase indicate difference between treatments within certain time pointBack to article page