Dictionary » A » Apomixis

Apomixis

Definition

noun

(1) A type of reproduction in plants where the usual sexual reproduction is replaced by asexual means that does not involve meiosis and syngamy.

(2) Seed production without involving fertilization.

(3) The formation of a new sporophyte but not involving fertilization.


Supplement

This form of reproduction has evolved in ferns, dandelions and other flowering plants. In flowering plants, it occurs in two forms:

  • gametophytic apomixis
  • adventitious embryony

Seeds produced by apomixis are genetically similar to the parent plant.


Synonym:

See also: asexual reproduction


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Results from our forum


Re: Alternation of generation

... gametophyte stage that is located in the flower. Check out this link for a full diagram and explanation: http://ecology.botany.ufl.edu/ecologyf03/apomixis.html Thank you very much, this link is very useful to me.

See entire post
by sagda
Thu Jan 29, 2009 5:10 pm
 
Forum: Botany Discussion
Topic: Alternation of generation
Replies: 8
Views: 16933

Re: Alternation of generation

... gametophyte stage that is located in the flower. Check out this link for a full diagram and explanation: http://ecology.botany.ufl.edu/ecologyf03/apomixis.html

See entire post
by plasmodesmata11
Mon Jan 26, 2009 11:04 pm
 
Forum: Botany Discussion
Topic: Alternation of generation
Replies: 8
Views: 16933


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