Effect of Arbuscular Mycorrhizal fungi symbiosis on growth parameters of Dracocephalum moldavica L. medicinal plant under salt stress

Salinity is one of the most important abiotic stresses which affects plant growth and yield. Mycorrhizae is one of the most useful symbioses which has positive impacts on the growth and yield of plants. In order to study the effect of Arbuscular mycorrhizal fungi, Glomus mosseae on growth features of Dracocephalum moldavica L under salt stress, an experiment was carried out based on randomized complete block design with three replications under laboratory conditions. Treatments consist of Mycorrhizal fungi at two levels: non-mycorrhizal (NM) as control and Glomus mosseae, and four levels of salinity (0, 50, 100, 150mM) at the stage of six adult leaves. Results showed that salt stress decreased the root length and root dry and wet weight. Mycorrhizal plants had higher root length and root dry and fresh weight in comparison with NM ones under salinity stress conditions. Mycorrhizal inoculation increase shoot dry and fresh weight in comparison with NM ones under salinity stress conditions. Total protein of shoot and root in all salinity levels in Mycorrhizal plants in comparison with NM plants increased significantly. Mycorrhizal plants showed higher chlorophyll content than non-Mycorrhizal plants. This study showed that Mycorrhizal inoculation improves growth of Dracocephalum moldavica L under salinity stress

کلیدواژه ها:

Dracocephalum moldavica ، Symbiosis ، Arbuscular Mycorrhizal ، Salt stress