Transcript Asexual Reproduction In Plants

Asexual Reproduction
In Plants
Plant Propagation (Asexual Reproduction
One of the most interesting and important areas of horticulture
is_________________________.
All organisms, including plants,
plant propagation.
reproduce. Plant propagation is the term used to refer to the
reproduction of new plants from seeds or
vegetative
________________________
parts of a plant.
Asexual Propagation: Asexual propagation is the reproduction of
leaves
new plants from the _________,_____________,
or
stems
roots
_____________
of a parent plant. In this method of plant
production no seeds are used – just portions of the parent plant
which are placed in soil.
Benefits of Asexual Propagation: The discovery of asexual
propagators
propagation allows ______________
to produce more plants
faster, especially in cases when seeds are difficult to germinate
or plants produce seeds that are
not___________.
The plants also are from disease free stock.
viable
You cannot grantee that seeds are disease free. One of the most
important benefits of asexual propagation is that the plants
produced are _______________identical
to the parent plant;
genetically
therefore, they have the same traits
as the parent plant.
This type of plant is known as
a___________.
In some cases it can also be more economical
clone
to produce plants asexually rather than by seeds.
The two most common and often used unnatural methods
of asexual propagation are 1) the use of
__________.
Cuttings are detached portions of the plant,
cuttings
such as __________,
stems
leaf-buds
_______________,
________________,
or
leaves
________________
that form missing parts to grow into
roots
complete new plants.
stem cuttings______________,
leaf cuttings
Cuttings are classified as__________,
root
leaf-bud cuttings and _____________
cuttings.
And 2)____________.
A cut stem of one plant (with good
grafting
flower or fruit growth) (the graft) is taken and firmly
attached to the rootstock of another plant (which has a
strong, established root system) (the stock).
Types of natural vegetative propagation are tubers, runner,
rhizomes and bulbs.
Definition
SEXUAL
REPRODUCTION
ASEXUAL
REPRODUCTION
 Involves sex cells
and fertilization
 Does not involve
sex cells and
fertilization
 Only one parent
plant
 Offspring are
genetically
identical to one
another
 Offspring have no
variation
Advantages/disadvant  Offspring are not
ages
genetically
identical to one
another
 There is variation
in the offspring
Vegetative Propagation
Vegetative Propagation
Runners
•
strawberries
Bulbs
•
onions.
Vegetative Propagation
Tubers
• Underground stems that contain
stored food.
• The eyes of potato can develop
into new plants.
Rhizomes
• Long modified stems that grow
horizontally under the ground.
• New plants grow off the roots.
• Long grasses, ferns, and irises are
examples of rhizomes.
Vegetative Propagation
Cuttings
• Pieces of a root or stem that in
certain conditions are made into
new plants.
• Some examples are bananas,
roses and sugar cane
Grafting
•
Taking a part of a plant and
connecting it to another one.
• Combining the two plants.
• Some examples are seedless
oranges and grapes.