Pedigree Method and Back-Cross Method | Breeding

Learn about the comparison between pedigree method and back-cross method.

Comparison # Pedigree Method:

1. The aim of this method to produce the new variety which is totally different from the parents bearing superior characters.

2. The method is used generally to improve the yield and other characters of the variety.

3. This method is useful to improve both qualitative and quantitative character.

4. Gene transfer from related species is not suitable through this method.

5. Hybridization is limited only to produce the F₁ generation.

6. F₁ and subsequent generations are allowed to self pollinate.

7. F₂ and subsequent generations are much larger than those of the back-cross method.

8. The method of breeding does not get modified whether the character is dominant or recessive gene controlled.

9. The new variety is subjected to extensive testing and yield trial before releasing as new variety.

Comparison # Back-Cross Method:

1. In this method the new variety is totally similar to recurrent parent except it bears a new character transferred from donor parent.

2. This method is used to improve the specific defect of a well adapted popular variety.

3. This method is suitable for introducing a specific highly heritable character.

4. It is the most suitable method for gene transfer from related species to produce addition or substitution lines.

5. Hybridization with the recurrent parent is done in every back-cross generation.

6. F₁ and subsequent generations are generally allowed to back-cross with recurrent parent.

7. The progeny of back-cross generations are smaller than pedigree method.

8. This method is different for transferring dominant and recessive gene controlled character.

9. As the back-cross method always aims at improving some particular character of recurrent parent, so extensive yield test is not required before releasing as new variety.