Course Content
Learn Introductory plant breeding with Braimy- B.Sc agriculture
About Lesson
  1. Natural selection changes gene freq. via natural survival
  2. Breeder may assist nature and discard obviously poor types
  3. Relieves breeder of most record keeping
  4. Most of us treat bulks with extremely low inputs and low expectations.


  • The bulk method is a procedure for inbreeding a segregating population until a desired level of homozygosity is reached.
  • Seed used to grow each selfed generation is a sample of the seed harvested in bulk from the previous generation.
  • In the bulk method, seeds harvested in the F1 through F4 generations are bulked without selection; selection is delayed until advanced generations (F5-F8).
  • By this time, most segregation has stopped.
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