Hybridization
/ˌhaɪbrədəˈzeɪʃən/
Definition
Hybridization is the crossing of two genetically distinct plants, usually within the same species or between closely related species, to produce hybrid offspring. It may happen naturally through pollination or be done deliberately in plant breeding. The offspring combine traits from both parents, which distinguishes hybridization from self-pollination or selection within a single plant line. In horticulture, it is used to create plants with specific characteristics such as flower color, growth habit, or disease resistance.
Role in Plant Biology
- Source of genetic variation: In plants, hybridization can combine traits from different parents, creating new gene combinations that may affect flower color, vigor, growth habit, or environmental tolerance.
- Link to plant evolution: Natural hybridization has contributed to the origin of some plant lineages and can blur species boundaries, which is one reason plant classification is sometimes complex.
- Common in certain groups: It is especially frequent in groups with compatible flower structures, overlapping bloom times, and shared pollinators, such as many orchids, irises, and oaks.
- Tool in horticulture: Plant breeders use hybridization to develop ornamental and crop plants with selected traits, but offspring may be variable unless the line is stabilized through further breeding.
Related Terms
Hybrid
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Introgression
Introgression refers to the movement of genes from one plant species or population into another through repeated…
Genotype
Genotype refers to a plant’s genetic makeup, the set of genes and gene variants it carries in its cells. It is a…
Pollination
Pollination is the transfer of pollen from the male part of a flower, the anther, to the female part, the stigma, of…
Fertilization
Fertilization in plants refers to the biological process in which a male gamete from pollen fuses with a female gamete…