Asexual Reproduction in Plants

Quiz 14B

Asexual Reproduction

little genetic variation has genes identical to its parent’s

Advantages of Asexual Reproduction

identical plants saves time saves money

Types of Asexual Reproduction

Vegetative reproduction Vegetative propagation

Vegetative Reproduction

The growth of a new plant from a stem, leaf, or root (something other than a seed).

Vegetative Propagation

Man’s use of vegetative reproduction to grow a new

plant from a root, stem, or leaf.

Types of Vegetative Propagation that are induced

cuttings (or slip)

layering grafting

Cuttings (or slip)

A piece of a stem, leaf, or root which is

capable of growing into a

new plant.

Cuttings (or slip)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

GraftingThe process of transplanting living tissue from one plant to another.

Used to propagateseedless plants: grapes, navel oranges

GraftingThis tree was developed by the West family in New South Wales, Australia and the process involves grafting branchesfrom compatible fruit trees onto one. The result is 4 different trees each with there own variety of fruit.

GraftingFor example there 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

Runners