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Free keywords:
Fire; smoke; germination cues; nicotiana attenuata; solanaceae; seed dormancy
Stimulated seed-germination; cigarette-smoke; fire; constituents; heat; wood
Abstract:
Some postfire annuals with dormant seeds use heat or chemical cues from charred wood to synchronize their germination with the postfire environment. We report that wood smoke and polar extracts of wood smoke, but not the ash of burned wood, contain pote