self-incompatibility
Blocks own fertilization
Self-incompatibility is a genetic mechanism in flowering plants that prevents self-fertilization.
When pollen lands on a flower of the same plant or a closely related one, the plant recognizes and rejects it, blocking fertilization.
This forces outcrossing—mating between genetically different individuals—which promotes genetic diversity.
Many fruit trees, including apples and cherries, require compatible partners nearby for this reason.
Variant forms of genes
- polymorphismMany forms, one interface
- heterosisOffspring surpassing both parents
- diversityState of varied elements
- locusParticular position or place
dominance · codominance · breeding · selection · mutation · receptor · signaling · recombination
Floral reproductive grains
- stigmaMark of dishonor
- BrassicaCole crop genus
- SolanaceaeNightshade plant family
- self-pollinationFertilization within one plant
outcrossing · haplotype · rejection · pistil · fertilization · heterozygosity · papilla · style
alleles
Variant forms of genes
- polymorphismMany forms, one interface
- heterosisOffspring surpassing both parents
- diversityState of varied elements
locus · dominance · codominance · breeding · selection · mutation · receptor · signaling · recombination · evolutionary
pollen
Floral reproductive grains
- stigmaMark of dishonor
- BrassicaCole crop genus
- SolanaceaeNightshade plant family
self-pollination · outcrossing · haplotype · rejection · pistil · fertilization · heterozygosity · papilla · style · recognition
hybridization
Mixing distinct genetic lines
pear · cherry · almond · clover · orchard · pollinizer · cultivar · rootstock · grafting · variety
- breedingselective breeding, breeder, crossbreeding, mating, breeding pair
- plant reproductionpollination, cross-pollination, self-pollination, flowering, blooming
incompatible, compatibility, selfhood, incompatibility, incompatibly, compatibilities, self-fertilization