What is backcrossing method?

What is backcrossing method?

Backcrossing. A breeding method used to move one or only a few desirable genes from an agronomically poor crop line to an elite line. This is done by crossing a donor parent to an elite line, and crossing offspring with the ‘desired gene(s)’ back to the elite parent.

Why do breeders do Backcrossing?

Backcross breeding enables breeders to transfer a desired trait such as a transgene from one variety (donor parent, DP) into the favored genetic background of another (recurrent parent, RP). If the trait of interest is produced by a dominant gene, this process involves four rounds of backcrossing within seven seasons.

What is Backcrossing in mice?

Backcrossing is a two-generation breeding protocol that starts by generating hybrid F1 mice between two inbred strains (preferably distantly related), one of them carrying the mutation of interest. Then, F1 mice are mated with a member of one of the parental inbred strains to generate N2 mice.

What is recurrent backcrossing?

Backcross breeding is used to incorporate simply inherited traits from unadapted donor parents into recipient lines and involves repeated cycles of crossing to the recipient line (recurrent parent), followed by selection of the trait being transferred (Kenaschuk, 1975).

Is backcrossing in breeding?

Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, to achieve offspring with a genetic identity closer to that of the parent. It is used in horticulture, animal breeding, and production of gene knockout organisms.

Is backcrossing inbreeding?

Linebreeding is a form of inbreeding that involves selection of mates on the basis of their relationships to a certain superior ancestor. The backcross (crossing a first-generation hybrid with one of the parental types) is a common method of inbreeding.

What is backcrossing in animal breeding?

Is Backcrossing in breeding?

What is backcrossing and how does it work?

Backcrossing involves making an initial cross between the donor and recurrent parents. The resultant F 1 progeny have 50% of their genetic material from each parent (Fig. 1).

What is the recipient parent in backcross method?

Backcross method involves two types of parents, viz. recipient parent and donor parent. The parent which receives a desirable character is known as recipient parent. The recipient parent is repeatedly used in the backcross method; hence it is also called as recurrent parent.

What is the breeding procedure of backcross method?

The breeding procedure of backcross method depends on whether the character under transfer is controlled by dominant or recessive gene. The breeding procedure for both the situations is briefly presented below:

What is the difference between backcrossing and Elite line?

The elite line, called the recurrent parent, usually performs well in all other areas. Backcrossing involves making an initial cross between the donor and recurrent parents. The resultant F 1 progeny have 50% of their genetic material from each parent (Fig. 1).