Chapter 2 - Vegetative Propagation
Define Vegetative propagation
Advantages
Artificial vegetative propagation
Can also be artificially induced
Apomixis is a special form of asexual propagation
New plant arise after the fusion of parental gametes and develop from zygotic embryos contained within seeds
A form of asexual reproduction of a plant (method of reproduction without seed)
Why Vegetative propagation? (Reasons)
Convenience and ease of propagation (able to propagate plant that do not generate viable seeds)
Fix a superior genotype
Faster to reproduce plants asexually
Combination of more than 1 genotype into a single plant
Helps to shorten reproductive maturity
Combination of more than 1 genotype into a single plant
Help to grow seedless plants (bananas, grapes)
Plant growth will be uniform
New plant is identical to mother plant (except chimera mother plants)
Disadvantages
more prone to diseases that are specific to the species (may destroy entire crop)
Require skilled specialist to perform grafting and budding
Does not produce new varieties
Expensive (than seed propagation)
Grafting & budding
Layering
Cuttings
Removal of mother plant such as stem leaf and leaf bud and root) into pieces and grow in a new plant
Grafting - Connecting 2 pieces of living plant tissue together to grow and develop as 1 plant
Budding - Scion is reduced in size to contain only 1 bud.
A method of propagation of tree and shrub from stems attaching to parents plant
Types of layerings
Simple layering
Mound layering
Tip Laying
Air layering
Natural vegetative propagation
Plant grow from parts of parent plants
Leaves
Tuberous roots
Rhizomes
Bulbs
Tuberous stems
Runner (Stolons)
What is scion and rootstock?
Scion - Upper portion of graft
Rootstock - Lower portion of graft