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Guilherme Mazui

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What is the Difference Between Agamospermy and Apomixis?

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Agamospermy and apomixis are both asexual reproduction methods in higher plants. They share some similarities, such as the absence of fertilization and the production of genetically identical offspring to their parents. However, there are key differences between the two:

  • Occurrence: Agamospermy mainly occurs in gymnosperms, while apomixis mainly occurs in angiosperms.
  • Process: Agamospermy involves the development of an embryo without fertilization, through methods such as adventive embryony, diplospory, and apospory. Apomixis, on the other hand, can be divided into two types: agamospermy (clonal reproduction through seeds) and vegetative reproduction (reproduction through vegetative parts like bulbils).

In summary, agamospermy and apomixis are asexual reproduction methods in higher plants that allow for the production of genetically identical offspring without fertilization. They differ in their occurrence, with agamospermy mainly found in gymnosperms and apomixis in angiosperms. Additionally, agamospermy involves the development of an embryo without fertilization, while apomixis can involve both clonal reproduction through seeds and vegetative reproduction.

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  • What is the Difference Between Agamospermy and Apomixis?
  • Comparative Table: Agamospermy vs Apomixis

    • Comparative Table: Agamospermy vs Apomixis

    Agamospermy and apomixis are both asexual modes of reproduction in higher plants. They share some similarities, such as the absence of gamete production and fertilization. However, there are differences between the two processes. Here is a comparison table highlighting the differences between agamospermy and apomixis:

    Feature Agamospermy Apomixis
    Occurrence Mainly occurs in gymnosperms Mainly occurs in angiosperms
    Types There are three types of agamospermy: adventive embryony, diplospory, and apospory Apomixis has four types: recurrent apomixis, non-recurrent apomixis, adventive embryony, and vegetative apomixis
    Embryo Formation Embryo formation occurs without meiotic gametogenesis and fertilization Embryo formation occurs without fertilization but producing embryo(s) and seed(s)
    Gametophyte Formation Apospory is a method of agamospermy where a female gametophyte or embryo sac is formed from any cell except the megaspore mother cell Apomixis can involve the formation of gametophytes directly from diploid sporophytes without any fusion

    Both agamospermy and apomixis serve as adaptations for plants to ensure survival and maintain their genetic integrity.

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    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.