Presentation on theme: "Introduction to Plant Reproduction"— Presentation transcript:
1Introduction to Plant Reproduction Introduction to AgriScience and TechnologyGHSMr. Ham
2Objective 1.1 Define Propagation The reproduction of plants either sexually or asexually.
3Objective 1.2 Define sexual reproduction and the terms associated with it. The union of the female and male sex cells to produce a seed (embryo).Ovule: female sex cell.Pollen: male sex cell.Embryo (seed-germ): an immature plant.*Sexual reproduction involves the creation of a genetically new individual.
4Objective 1.3 List and explain the different types of seeds. Monocots:Seeds with one seed leaf.Leaves have parallel veins.1 solid seed.Stem vacular bundles scattered.Roots are adventitiousFlowers in multiples of three.Pollen with single furrow or pore
5Dicots Seeds with 2 seed leaves or 2 cotyledons Veins are “webbed.” Pollen with three furrows or pores.Flowers parts in multiples of four or five.Stem vascular bundles in a ring.
19Incomplete FlowerAn incomplete flower is one that lacks one or more of the four principal components identified in a complete flower.
20Objective 1.5 Explain the difference between a perfect and imperfect flower A perfect flower is one with both the stamen and pistilAn imperfect flower is one that lacks one of the sex organs.
21Objective 1.6 Define pollination, fertilization and germination. The transfer of pollen from an anther to a stigma of a flower of the same species.FertilizationThe union of the pollen and ovule cells.GerminationThe sprouting of a seed.
22Objective 1.7 Define asexual reproduction The reproduction of a plant without the uniting of a pollen and ovule.Asexual reproduction is often referred to as vegetative propagation since no seed is involved in the formation of the new plant.It is known as a clone.Leaves, stems or roots may be used to grow a new plant.*Produces a genetically identical plant.
23Objective 1.8 List the benefits of vegetative propagation. True traits of the parentsMaintains genetic purity with100% replication of parent plant.No seedSome plants do not produce a seed or the seeds are too small to work with.Accelerates the time it takes to get a new plant to the marketTraditionally, it would take up to 40 years to get a new plant to the general public; however, micropropagation can yield marketable levels of plants within 8 to 12 years.
24Objective 1.9 List and explain the different types of vegetative propagation. LayeringInvolves getting roots to grow from the stem. I.e., magnolia treeCuttingUsing a short section of plant stems for propagation.BuddingTaking a bud from one plant and moving it to another.GraftingPlacing a section of a stem of one plant onto another plant.Tissue cultureTaking a group of cells or a single cell and growing it to a plant.