Exercise : Natural methods of
Vegetative Propagation in Plants
Aim: To study and identify
the types of natural methods of vegetative propagation in plants.
Principle: Natural vegetative
reproduction is a form of asexual reproduction in which vegetative bud
grows and develops into a new plant.
Requirements: Fresh / preserved
specimens of Zingiber, Chrysanthemum, Bryophullum.
Ask
the students to visit the nearest vegetable market and classify the vegetable
into root, stem or leaf based on their utility and identify how many of them
can be propagated through vegetative methods.
• Ginger is a
underground stem which is called as Rhizome.
• Rhizomes are
horizontal and swollen due to the storage of food materials.
• The terminal
buds turn upwards to produce the aerial flowering shoot and the lateral buds
gro out to form new rhizomes.
·
The suckers of Chrysanthemum are used for propagating
plants.
·
Suckers grows horizontally under the soil and then emerge out
obliquely from the soil and give rise to a new plant or leafy shoot.
·
The sucker has nodes and internodes. In the nodal region, it bears
axillary buds above and adventitious roots below.
·
In Bryophyllum, adventitious buds arise on the leaf margins.
These are called epiphyllous buds.
·
When the leaves fall off the epiphyllous buds develop roots into
the soil and becomes independent plants.
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