Self-pollination - The process by which the male gametes of a plant fertilize the eggs of the same plant.
Sporangium - The part of a plant where spores are produced.
Spore - Haploid cell from which a gametophyte is produced.
Transfer of pollen (pollination) from the anther of a flower to the stigma of the same flower or sometimes to that of a genetically identical flower (as of the same plant or clone).
Mendel's experimental organism was a common garden pea (Pisum sativum), which has a flower that lends itself to self-pollination. The male parts of the flower are termed the anthers. They produce pollen, which contains the male gametes (sperm).
Switching from Cross-Pollination to Self-Pollination
A substantial minority of angiosperms have abandoned cross-pollination for self-pollination. For example, while its wild relatives continue to be cross-pollinated, the domestic tomato is not.
Two steps are needed for this change: ...
During self-pollination, the gametes of these two classes unite randomly.
This produces four equally likely combinations of sperm and ovum.
A Punnett square predicts the results of a genetic cross between individuals of known genotype.
outcross /OUT-cross/ (1) mating in which the male and female gametes are derived from different individuals; used in opposition to self-fertilization; (2) the pollination of a stigma with pollen from another plant (used in opposition to self-pollination); (3) outbreed.
To clone the genes responsible for this trait, Martienssen's team first mapped the genomic interval for shell thickness from hundreds of inbred lines derived from self-pollination of a thin-shelled accession.
of pollen (pollination) from the anther of a flower to the stigma of the same flower or sometimes to that of a genetically identical flower (as of the same plant or clone). Ability of many plant species to naturally and successfully fertilize within one individual.
Also called self-pollination.
It is a plant model system of choice because of the additional advantages of short generation time (about five weeks), high seed production (up to 40,000 seeds per plant) and natural self-pollination (as opposed to natural cross-pollination in maize). It has five small chromosomes.
Self-pollination. Pollen of one plant is transferred to the female part of the same plant or another plant with the same genetic makeup. Selectable marker. A gene whose expression allows one to identify cells that have been transforrned or transfected with a vector containing the marker gene.