Types of Hybridization – Hybrid
Plant hybridization can be of two types.
Intervarietal Hybridization
- In this type of hybridization, two parents from the same species (may be from two varieties, strains or races of the same species) are crossed.
- Single Cross Hybrids
- Double Cross Hybrids
- Three-way Cross Hybrids
- Triple Cross Hybrids
- Top Cross Hybrids
Single Cross Hybrids
- Results from the cross between two pure bred lines and produces an F1 generation called an F1 hybrid (F1is short for Filial meaning “first offspring).
- The cross between two different homozygous lines produces an F1 hybrid that is heterozygous; having two alleles, one contributed by each parent and typically one is dominant and the other recessive.
- The F1 generation is also homogeneous, producing offspring that are all similar to each other.
Double Cross Hybrids
- Result from the cross between two different F1 hybrids.
Three-way Cross Hybrids
- Result from the cross between one parent that is an F1 hybrid and the other is from an inbred line.
Triple Cross Hybrids
- Result from the crossing of two different three-way cross hybrids.
Top Cross Hybrids
- Cross between inbred line and OPV.
Distant Hybridization (Population hybrids)
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Last modified: Monday, 2 April 2012, 5:12 PM