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. 2015 Oct 29;10(10):e0140983. doi: 10.1371/journal.pone.0140983

Fig 7. Conceptual model comparing events in the seed stage of the life cycle of a typical temperate-zone disapore-monomorphic facultative winter annual with those of the cold desert facultative winter annual Isatis violascens.

Fig 7

PD, physiological dormancy; D, dormant; ND, nondormant; CD, conditional dormancy, i.e. seeds can germinate at low but not at high tmperatures.