Gene
Conservation
Banks
OR
Preservation
of
Plant
Genetic
Resources -
The
need
for
a
program
for
the
conservation
of
plant
genetic
resources
arises
from
the
rapid
changes
occurring
in
modern
agricultural
practice.
Primitive
cultivars
and
wild
relatives
of
crop
plants
constitute
a
pool
of
genetic
diversity
which
is
invaluable
for
future
breeding
programs.
These
have
already
led
to
replacement
by
new
cultivars
which
encompass
a
much
narrower
range
of
genetic
diversity.
As
a
result,
there
is
a
very
real
danger
of
future
breeding
being
impeded
by
the
shrinking
genetic
bases
of
some
crops.
Hence,
storage
of
this
sort
of
irreplaceable
breeding
material
or
germplasm
(gene
combinations
available
for
breeding)
and
establishment
of
a
centralized
gene
bank
are
the
practical
ways
to
solve
these
problems.
Conventionally,
germplasms
are
stored
in
the
form
of
seeds
because
they
occupy
a
relatively
small
space
and
can
be
stored
for
many
years.
But
there
are
a
number
of
important
species,
in
particular
root
and
tuber
crops,
which
are
normally
propagated
vegetatively.



