Plant Reproduction and Propagation

Objectives: Define propagation. Compare and contrast the differences between asexual and sexual reproduction, and explain the advantages to both. Demonstrate how to properly propagate a cutting.

Propagation: The reproduction of plants either sexually or asexually.

Sexual Reproduction Sexual Reproduction: the union of an egg (ovule) and sperm (pollen), resulting in a seed. Results in the creation of a genetically new individual.

Asexual Reproduction Asexual Reproduction: uses a vegetative part of only one parent plant. Often referred to as vegetative propagation; no seed is involved in the formation of the new plant. Leaves, stems or roots may be used to grow a new plant. Produces a genetically identical plant.

Sexual vs. Asexual Reproduction Group 1: advantages of sexual reproduction of plants (i.e. seeds) Group 2: advantages of asexual reproduction of plants (i.e. vegetative propagation)

Advantages of Sexual Reproduction Less expensive cost of seed Requires little skill For some plants, it is the only way to propagate them Avoids passing on some diseases Hybrid Vigor

Advantages of Asexual Reproduction Produces a plant quicker Plants are identical to parent plants Guaranteed product In some species, it is the only way to propagate them