Fig. 3From: Seed viability testing for research and conservation of epiphytic and terrestrial orchidsBox plots for the probability of finding viable seeds (PSV) after subjecting to three seed viability tests; Evans blue test (EB), Fluorescein diacetate test (FDA) and Tetrazolium test (TTC) for epiphytic and terrestrial orchids without sterilization (NS) and with sterilization (S) of seeds. Viability tests that are marked with the same letters were similar statistically (P > 0.05) while those with different letters were notBack to article page