plant breeding (group 6).pptx for Ohawu Agricultural College, diploma 3 class 2024

Plant breeding power point presentation for ohawu Agricultural College diploma 3 group 6
In the year 2024

1. PLANT BREEDING GROUP SIX

2. Allopolyploidization in Plants Allopolyploidization is a type of polyploidy.
Polyploidy is a condition in which an organism has more than two complete sets of chromosomes.
In allopolyploidization, the additional sets of chromosomes come from different species which include important crops such as wheat, cotton, and canola

3. Examples of Allopolyploid plants Wheat Cotton Canola

4. Characteristics of an Allopolyploid plant Hybrid origin: Is a set of Doubled chromosome: Exhibits Genetic diversity: Is Heterotic (hybrid vigor) plant:

5. How Does Allopolyploidization Occur? Allopolyploidization can occur through the following steps: Hybridization between two different plant species.
The resulting hybrid inherits one set of chromosomes from each parent.
The hybrid is often sterile because its chromosomes cannot properly pair during meiosis (cell division for sexual reproduction).
Chromosome doubling (autopolyploidy or mitotic doubling) can restore fertility.
The doubled chromosomes can now pair more easily, allowing the plant to produce viable gametes (sex cells).

6. Formation of Allopolyploidization

7. Formation of allopolyploid plant

8. Impact of Allopolyploidization on Plant Genomes Allopolyploidization can have a dramatic impact on plant genomes.
The newly combined genomes can interact in various ways, leading to: Gene silencing: Subfunctionalization:
Neofunctionalization:

9. Benefits of Allopolyploidization Allopolyploidization can provide several benefits to plants, including: Increased genetic diversity: Improved stress tolerance: Increased vigor:

10. Thank you

11. 20202100 56 57 58 59 60 61 62 63 64 55