Transcript PowerPoint Chapter 10 Lesson 3 Part 1

Asexual Reproduction in Plants
C10L3P1
Asexual Reproduction
Asexual
reproduction
occurs when a
portion of a plant
develops into a
separate new
plant that is
genetically
identical to the
original, or parent,
plant.
Asexual Reproduction
 little genetic variation
 has genes identical to its parent’s
Advantages of Asexual
Reproduction
 identical plants
 saves time
 saves money
Asexual Reproduction
Vegetative Propagation
The growth of
a new plant
from a stem,
leaf, or root
(something
other than a
seed).
Vegetative Propagation induced
Man growing a new plant from
a root, stem, or leaf.
Types of Vegetative Propagation
that are induced
 cuttings
(or slip)
 layering
 grafting
Cuttings
A piece of a
stem, leaf, or
root which is
capable of
growing into a
new plant.
Cuttings
Cuttings are possible because certain types
of plants are able to sprout special types of
roots at the cut end of their stems.
Adventitious roots
When a yellow-flowering hedge shrub is
trimmed, a new shrub
may be started by simply sticking a trimmed stem
into the ground.
Layering
A branch is exposed to the soil,
allowed to form roots, and then
separated from the parent plant.
Vineyards use this method to
quickly reproduce a desirable
variety of grapes.
Layering
Layering
Grafting
The process of transplanting
living tissue from one plant to
another.
Used to
propagate
seedless plants:
grapes,
navel oranges
This tree was
Grafting
developed by
the West family
in New South
Wales, Australia
and the process
involves grafting
branches
from compatible fruit trees onto one.
The result is 4 different trees each
with there own variety of fruit.
For example there
Grafting
is a stone fruit tree
with apricots,
peaches, plums,
nectarines and
peachcots; a citrus
tree with oranges,
mandarins,
lemons, limes,
tangellos, grapefruit; a multiple
apple tree, and a pear tree.
Types of Vegetative Propagation
that are natural
 underground stolons (mints)
 rhizomes (cattails)
 corms (gladiolus)
 bulbs (onion)
 tubers (Irish potatoes)
 runners (strawberries)
Underground Stolons
Underground Stolons
Rhizomes
Rhizomes
Corms
Corms
Bulbs
Bulbs
Tubers
Tubers
Runners