Arabidopsis seed germination.
A mature Arabidopsis seed can be either dormant or non-dormant. A dormant seed will not germinate when it
will be exposed to the right environmental conditions (light and water).
Seed dormancy can be broken by dry storage or by a cold imbibition (stratification).
Seed germination in Arabidopsis is two-step: testa rupture followed by endosperm rupture.