[Next]  [Previous]   [Floral Formula]  [Lecture Text]

Breeding Systems

37-Apomixis

[FMP-field: image]

APOMIXIS

Advantages of Apomixis

  • assured reproduction in the absence of pollinators, such as in extreme environments
  • maternal energy not wasted in unfit offspring (cost of meiosis)
  • some apomictic plants (but not all) avoid the male energy cost of producing pollen

Disadvantages of Apomixis

  • can't control accumulation of deleterious genetic mutations
  • usually restricted to narrow ecological niches
  • lack ability to adapt to changing environments

This example is a blackberry, Rubus, which is apomictic.


Photo taken by K. R. Robertson at Richardson Wildlife Reserve, Lee County, Illinois.

[Next]  [Previous]   [Floral Formula]  [Lecture Text]