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Final germination percentage of (A) Hyacinthoides non-scripta, (B) Narcissus pseudonarcissus and (C) Scilla bifolia seeds incubated at 5, 10, 15/6 and 20/10 °C, following pre-treatment at 23 °C for 0, 4, 8, 12 or 16 weeks. Vertical bars denote the s.e.m.; n = 3.
