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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • A form of asexual reproduction through which seeds are produced without fertilization, the seeds being entirely of maternal origin.

    Question: A form of asexual reproduction through which seeds are produced without fertilization, the seeds being entirely of maternal origin.

    Options:

    Apomixis
    Micropropagation
    Separation
    None of the above

    🌱 Key Points
    🧬 Apomixis is a form of asexual reproduction that occurs via seeds, in which embryos develop without fertilization.
    🧬 Apomixis is derived from two Greek words: "Apo" meaning away from, and "Mixis" meaning the act of mixing or mingling.
    🧬 In some plant species, an embryo develops from the diploid cells of the seed and not as a result of fertilization between ovule and pollen. This type of reproduction is known as apomixis, and the seedlings produced are called apomicts.
    🧬 In apomictic species, sexual reproduction is either suppressed or absent.
    🧬 When sexual reproduction also occurs, apomixis is termed facultative apomixis. When sexual reproduction is absent, it is referred to as obligate apomixis.
    🧬 Apomixis produces embryos or seed progeny that are exact genetic replicas of the mother plant.
    🧬 The main advantage of apomixis over sexual reproduction is the possibility to select individual plants with superior characteristics and propagate them clonally through seeds.
    🧬 Apomixis is classified into Recurrent Apomixis, Non-recurrent Apomixis, Adventive Embryony, and Vegetative Apomixis.
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