Phenotypic variation Variation produced by changes in environment.

progeny The subsequent generation following a mating or crossing of parents; offspring.

Recombination frequency The frequency at which crossing over occurs between two chromosomal loci; the probability that two loci will become unlinked during meiosis. (not really sure what it means right now I am reading the dictionary of botany but it may have some thing to do with breeding)

Selfed Fertilized by its own pollen, self-pollinated.

Selfing The pollination of a stigma with pollen from the anthers of the same flower or plant.

Somatic embryogenesis Embryos are produced either from somatic cells of explants (direct embryogenesis) or by induction on callus formed by explants (indirect embryogenesis). a.k.a. asexual embryogenesis.

Stigma The tip of a pistil which is receptive to the pollen grains and upon which they germinate.