Fig. 2From: Culture types and period impact gametophyte morphogenesis and sporophyte formation of eastern brackenEffect of medium components on the fresh weight of eastern bracken gametophytes cultured for 18 days. A Culture media; B sucrose concentration; C total nitrogen concentration; D NH4+:NO3− nitrogen ratio; E charcoal concentration. Vertical bars represent the mean ± standard error values (n = 4). zDifferent letters indicate a significant difference using Duncan’s multiple range test at P < 0.05Back to article page