Abstract
Jack pine (Pinus hanksinna Lamb.) seeds were primed in 10% (w/w) polyethylene glycol8000 for 2-6 days and their germination, as well as soluble protein, amino acid, and ATP contents compared with unprimed germinating seeds. Primed seed germinated about 2 days earlier than unprimed seed and had a high ATP content early in the priming period. Pepstatin-sensitive acid proteinase activity, which was high even in dry seeds, correlated poorly with germination in primed seed.
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