Please enable JavaScript.
Coggle requires JavaScript to display documents.
Vegetative Reproduction - Coggle Diagram
Vegetative Reproduction
What Is Vegetative Reproduction
Vegetative reproduction is a type of asexual reproduction
In Vegetative reproduction new plants are developed from non-reproductive part such as leaves, branchesand stems of the parent plant.
Vegetative reproduction is based on mitosis and regeneration.
New individuals are formed without the production of seeds or spores
The new plant is identical (has same genetic information ) with parent plant. It occurs in a shorter time than sexual reproduction.
Types of vegetative reproduction
Propagation by grafting (Artificial)
Two plants are used to develop a new plant with combined traits from the parent plants. In grafting one plant attached on to body of the other plant.
The rooth part is called "Stock" and the upper part is called "Scion"
Propagation by Runners or Stolons
Their horizantal stems grow above ground along the soil surface and produce adventitious roots and new shoots.
Example
mint
Strawberry
Propagation by layering (Artificial)
branch of a parent plant is bent to the ground or water until it can be covered by soil and then new root system appears.
Propagation by cutting (Artificial)
Cutting is removing a piece of the parent plant and planting it, then new root system appears. At first roots are produced and then the shoot with the leaves.
Propagation by Rhizome
Rhizomes are horizontal stems that grow under the ground,often sending out roots and shoots from their nodes.
The rhizomes have buds on them and they give rise to new plants that ar genetical copies of the parent plant.
Examples
ginger
couch grass
banana
If a rhizome is separated into pieces, each pieces may be able to give rise to a new plant.
Tissue Culture
Tissue Culture is a method of biological research in which the fragments of tissue from an animal or plant are transferred to an artificial environment in which they can continue to survive and function.
Cells in a culture may multiply;change size, form or function, exhibit specialized activity or interact with other cells.
It is good for the reproduction of endagered spicies
Provides fast and easy reproduction for some organisms
General procedure of tissue culture:
1) Tissue cells are taken from meristematic cells in plants.
2) Tissue cells divide by mitosis in culture and form a callus (group of cells).
3) Callus is treated with growth factors to make them differentiate into new tissues..
Propagation by Tuber
The underground stems grow horizontally outwards in the soil and each tuber is irregular in shape . The surface of each tuber are enclosed by an axillary bud called an eye this is the node.These eyes are capable of producing new plants by vegetative propagation.
Examples
white potato
sweet potato
Propagation by Bulb
The bulb is a shortened underground storage stems. Bulbs produce smaller buds. As the mature plants gets to the end of its life, the bud develops into smaller bulb that attaches to the base of the parent bulb. The new bulb can be separated and planted.
