The effect of different salt concentrations of salicylic and ascorbic acids on the germination of pot marigold plant (Calendula officinalis L.)

Abstract

Calendula officinalis is one of the important medicinal plants known as "Pot marigold" in the world and has become widespread in recent years due to its medicinal and economic importance. In this study, it was aimed to determine the effects of salicylic acid (SA) and ascorbic acid (AsA) application on germination and some physiological parameters of calendula (Calendula officinalis L.) seeds applied different salt (NaCl) concentrations. In the study, 4 different concentrations of NaCl (0, 50, 100 and 150 mM), SA and AsA applications (4 different concentrations (0, 50, 100, and 150 mM) were used for each application. Germination rate (%), germination time in the study (day), root length (cm) and stem length (cm) criteria were examined. As a result of this research, it was determined that increasing salt concentrations had a negative effect on germination. In addition, positive effects of 50 mM and 100 mM AsA, SA applications on germination and other examined criteria were determined. It has been determined that AsA and SA applications, which will be applied at the optimum level, can have a positive effect on the germination of Calendula plant in saline conditions.