Asexual Reproduction in Plants Lorie Kempen Asexual Reproduction

Asexual Reproduction in Plants Lorie Kempen

Asexual Reproduction n little genetic variation n has genes identical to its parent’s

Advantages of Asexual Reproduction n identical plants n saves time n saves money

Types of Asexual Reproduction n Vegetative reproduction n 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 n cuttings (or slip) n layering n grafting

Cuttings (or slip) A piece of a stem, leaf, or root which is capable of growing into a new plant. By using a rooting medium

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 – Oldest Method 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 – Inserting a single bud into an incision beneath the bark of the stock

Layering

Grafting The process of transplanting living tissue from one plant to another. Joining together the Cambium layers of the Scion Used to propagate seedless plants: grapes, navel oranges

Image result for what is the scion in grafting Grafting and budding are horticultural techniques used to join parts from two or more plants so that they appear to grow as a single plant. In grafting, the upper part (scion) of one plant grows on the root system (rootstock) of another plant. In the budding process, a bud is taken from one plant and grown on another. Jun 30, 2014

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 n underground stolons (mints) n rhizomes (cattails) n corms (gladiolus) n bulbs (onion) n tubers (Irish potatoes) n runners (strawberries)

Underground Stolons

Underground Stolons Example of St. Augustine Grass

Rhizomes

Rhizomes

Corms Example would be Gladiolus

Corms

Bulbs – Example of a Bulb is an Iris & Garlic and are divided

Flower Bud Foliage Leaves Bulb Scales Basal Plate BULBLETS

Bulbs

Tubers

Tubers

Runners

Runners

Micro Propagation Only takes a few cells and are grown in a lab situation