Dictionary > Automixis

Automixis

Definition
noun
(botany) Self-fertilization; a mode of fertilization where fertilization takes place on the flower itself, i.e. the ovum of the flower is pollinated by its own pollen (as opposed to allogamy)
(biology) Automixis
Supplement
In botany, autogamy is when fertilization occurs on a flower by pollinating the ovum with its own pollen (self-pollination). It is opposed to allogamy, which refers to the cross-pollination in plants. In autogamy, fertilization takes place automatically within an individual flower if it is not disturbed resulting in offspring that are the progeny from a single individual. Through autogamy, the individual flowers are left to engage in self-fertilization. Autogamy in plants is a regular means of reproduction in many flowering species.
In other organisms apart from plants, self-fertilization may also occur. It is observed in certain protests and fungi species. Their gametes are produced from meiosis, making them haploid. Diploidy is restored by the fusion of the two haploid gametic nuclei (synkaryon) within the cell. As a result, the offspring would be half clone of the mother. This form of asexual reproduction is also referred to as autogamy (or autogamic parthenogenesis). It occurs when the environment becomes stressful to these organisms.
Compare:

See also:

  • reproduction
  • fertilization
  • Related form(s):

    • autogamous (adjective, of, relating to, or characterized by, autogamy)


    You will also like...

    Genetic engineering
    Genetic Engineering Advantages & Disadvantages

    This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

    green leaf - close up view
    Leaves

    Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

    Ploidy
    Polyploidy

    Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

    Muscle
    Muscle

    Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..

    Ecological Research Measuring & Analysis
    Ecological Research: Measuring & Analysis

    This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..

    Gene Pool and Speciation
    The Gene Pool and Population Genetics

    According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..