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(A), Accumulation of PAs in endospermic cap of dormant seed. (B and C), Decaping of endospermic cap significantly promoted seed germination as compared to control (with endospermic cap). (D), Dynamic changes of PAs in the endospermic cap of non-dormant seed. Bars in (A) and (D) 2 mm, (B) 1 cm. The photographs were taken by Shah Faheem Afzal.
