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Sensitivity of primed lettuce seeds (lot 1Y) to high-pressure oxygen storage. (A) Seedling morphology of non-primed seeds after ambient storage. (B) Seedling morphology of non-primed seeds after 2 weeks storage at 18 MPa pO2. (C) Seedling morphology of primed seeds (1 g seeds with 0·6 g water) after ambient storage. (D) Seedling morphology of primed seeds after 2 weeks of storage at 18 MPa pO2. The arrows point to lack of root growth.
