Fig. 2

a Pollen germination percentage in response to sucrose concentration (%) in the germination medium in quinoa QQ74. Sample sizes are n = 9 for 8% sucrose medium, n = 15 for 16% sucrose medium, n = 9 for 24% sucrose medium, and n = 8 for 32% sucrose medium. b Pollen germination percentage in response to boric acid (%) in the germination medium in quinoa QQ74. Sample sizes are n = 10 for 0% boric acid, n = 12 for 0.01% boric acid, n = 12 for 0.02% boric acid, n = 17 for 0.03% boric acid, and n = 9 for 0.04% boric acid. c Pollen germination percentage in response to pH 5.5 and 6.5 in the germination medium in quinoa QQ74 and cherry vanilla. Sample sizes are n = 15 for QQ74 in pH 5.5 medium, n = 19 for QQ74 in pH 6.5 medium, n = 4 for cherry vanilla in pH 5.5 medium, and n = 6 for cherry vanilla in pH 6.5 medium. Letters or an asterisk above boxes indicate significant differences from Welch's t-test (p-value < 0.05)