Definition of Chalazogamy
Chal`a`zog´a`my
n.
1.
(Bot.)
A
process
of
fecundation
in
which
the
pollen
tube
penetrates
to
the
embryosac
through
the
tissue
of
the
chalaza
,
instead
of
entering
through
the
micropyle
.
It
was
originally
discovered
by
Treub
in
Casuarina
,
and
has
since
been
found
to
occur
regularly
in
the
families
Betulaceæ
and
Juglandaceæ
.
Partial
chalazogamy
is
found
in
Ulmus
,
the
tube
here
penetrating
the
nucleus
midway
between
the
chalaza
and
micropyle
.
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