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Longitudinal cuts (hand sections) showing dye uptake by non-dormant I. lacunosa seeds: (A) dormant seed after 6 h in dye; (B) non-dormant seed after 15 min imbibition; (C) non-dormant seed after 4 h imbibition; (D) non-dormant seed after 6 h imbibition. BP, Bulge; CT, cotyledon; HP, hilar pad; R, radicle; ST, stain.
