Notes- Plant Propagation
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Transcript Notes- Plant Propagation
PLANT
PROPAGATION
Student Learning Objectives. Instruction in this lesson should result
in students achieving the following objectives:
1 Define plant propagation.
2 Describe seed germination and the proper
conditions for it.
3 Describe three types of plant cuttings.
OBJECTIVE 1: Define plant propagation.
The horticulture industry relies on plant
propagation to produce the plants they
need.
Plant propagation- the reproduction of new
plants from seeds and vegetative parts like
leaves, stems, or roots
OBJECTIVE 1 continued
Plant propagation allows producers
to:
create more plants from old ones
keep a plant variety going
OBJECTIVE 2: Describe seed germination and
the proper conditions for it.
Plants can also be grown from seeds.
Some plants grow best when they are
started from seeds.
Dormant- a resting state. This describes the
seed before it grows into a plant
Germination- the process
by which a seed starts to
grow.
How it works
Begins with the
breaking of the seed
coat and the growth of
a root into the soil.
Complete when the stem
& leaves have emerged
from the ground. The
plant can then support
itself.
OBJECTIVE 2 continued
Seeds are designed to wait for favorable
conditions to begin growth.
When the water, oxygen, temperature,
and light requirements are met, the seed
should begin to grow.
Not all seeds need the same amount of
each condition..
OBJECTIVE 3: Describe three types of plant cuttings.
Plants can be reproduced by cuttings.
Plant cutting- a part of an existing plant that is
used to make new plants.
Usually taken from a stem, leaf, or root.
Sometimes a cutting is dipped in a growth
hormone to help it begin to root.
Stem cuttings
taken by removing a section of
a stem with at least two nodes
from an existing plant.
Node- place on the stem where a
leaf begins
The stem can then be planted
in the soil.
Ficus and geranium plants can
be started from stem cuttings.
Leaf cuttings
taken by removing a
leaf from an existing
plant and cutting it into
smaller sections.
The sections are then
planted in the soil.
African violets and
begonias can be
started from leaf
cuttings.
Root cuttings
taken by removing a section
of the root of the existing
plant and cutting it into
three or four sections.
The sections are then
planted in the soil. Root
cuttings are not as common
as stem and leaf cuttings.
Examples: Carrot and
blackberry plants can be
started from root cuttings.