High Quality Content by WIKIPEDIA articles! This article discusses Selection methods in plant breeding based on mode of reproduction. Some plants reproduce by (more or less strict) self-fertilization where pollen from a plant will fertilise reproductive cells or ovules of the same plant. Other plants only (mainly) allow cross-pollination where pollen from one plant can only fertilize a different plant. Asexual propagation (vegetative propagation) can also occur in plants (e.g. runners from strawberry plants) which gives a new plant which is genetically identical to its parent plant. All these differences change the way plant breeders work. Apomixis is the phenomenon that seed are produced, but in an essentially asexual way, so that parent and offspring belong to one clone just as in case of `normal` asexual propagation.