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WEEK-6- Intraspecific Crossbreeding

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WEEK-6- Intraspecific Crossbreeding

Heterosis

In the case of crossbreeding, we are usually referring to the mating of two or more strains, lines, races or breeds. The goal of using crossbreeding and hybridization is to obtain heterosis.

The classical definition of heterosis is the mean of the reciprocal F1 hybrids or crossbreeds minus the mean of the two parents divided by the mean of the two parents multiplied by 100. Obviously, heterosis can be positive, negative or zero.

Intraspecific crossbreeding;

1. improves growth

2. improving survival traits and disease resistance 3. İmproving various reproductive traits

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