Advanced Backcross Breeding
Date of this Version
Plant and Soil Sciences eLibrary (PASSeL) Lessons.
This lesson is a detailed explanation of the backcross breeding process. Variations based on whether backcrossing is performed with dominant, recessive, or multiple traits are discussed. Calculations associated with backcross breeding are explained.
This lesson explains the importance of the backcross method in the development of improved crop varieties. The theory behind the method, plus its strengths, weaknesses and requirements will be discussed.
At the completion of this lesson you will be able to:
- List the requirements of a successful backcrossing program.
- Explain how to move a single gene from one variety to another.
- Describe how two or more genes can be backcrossed into cultivars.
- Discuss both the strengths and limitations of the backcrossing method.
- Outline the importance of backcrossing in the development of transgenic crops.
- Explain two reasons why backcross breeding is done.
- Discuss how the backcrossing process for a dominant gene is different than that of a recessive gene.
- Calculate the following: