Study of main characteristics of seeds of thirteen ecotypes of different species of bromus, agropyron and medicago in response to two species of fusarium in laboratory and greenhouse

The main purpose of this experiment was to evaluate the characteristics of seed samples of thirteen ecotypes of Medicago, Bromus and Agropyron in response to Fusarium solani and Fusarium oxysporum. Origin of seeds used in the experiment, was either Iran or other countries. The seed sample of each ecotype was exposed to two concentrations of spores of F. solani, F. oxysporum. (20 x 104 and 29 x 104 spores/ml for F.solani and 45 x 104 and 59x 104 spores/ml for F. oxysporum). The inoculated seeds of ecotypes were considered as treatments, and non-inoculated seeds as control. The main characteristics of the inoculated seeds including percent and speed of germination, length of root and shoot, and vigour index were compared with those of non-inoculated seed for each ecotype. The results showed significant differences among ecotypes and fungal species for all the measured characteristics. The effect of fungal treatment on germination speed was more than that of germination percentage.