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The germination rate of the apple embryos isolated from seeds subjected to accelerated ageing for 7, 14, 21 and 40 days (C) or the embryos isolated from aged seeds and treated with NO (NO). Values are the average of three independent experiments with 90 embryos in each (45 control and 45 NO treated). Different letters indicate significant differences obtained by Tukey’s test (p < 0.05).
