Three Korean fumewort species (Corydalis) share the same class of seed dormancy — requiring specific sequences of warm and cold temperatures before germinating — and this dormancy type has been preserved across the genus even after long geographic separation, though the precise temperature triggers differ by species.
1
All three species had underdeveloped embryos at seed dispersal and exhibited morphophysiological dormancy (MPD), confirming MPD is conserved across the Corydalis genus despite long-term geographic separation.
2
C. remota and C. incisa require warm-then-cold temperature sequences for germination and could not be shortcut with gibberellic acid (GA3), classifying them as deep simple regular MPD.
3
C. speciosa germinated under cold conditions alone (non-deep complex regular MPD), but germination was enhanced by prior warm exposure — showing diversification in dormancy depth even within the same dormancy class.
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