Definition: Seed germination is the resumption of active
growth of the embryo that results in the rupture of the seed coat and the
emergence of the young plant under favourable conditions.
Seed would normally germinate only after they have undergone
a predefined period of growth and development accumulating food reserves and
finally becoming air dry.
Seed germination depends on a favourable combination of
several external and internal factors; in nature, seed must wait for this
combination to occur for their germination.
Types of germination:
1. Hypogeal germination:
the cotyledons or storage organs do not emerges above the soil surface; only
plumule emerges above the ground. Ex: Most of the monocots and pea
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