Current Contents

8. Family-based Selection

• Introduction to Family-Based Selection Schemes
  • Overview of the different types of family-based selection
  • Plant vs. animal breeding
  • Between- vs. within-family selection
• Details of Family-Based Selection Schemes
  • Selection and Recombination Units
  • Variations of the Selection Unit
  • Variations on the Recombination Unit
• Theory of Expected Single-Cycle Response
  • Modifications of the Breeders' equation for predicting family-based response
  • The selection unit-offspring covariance
  • Variance of the selection unit
• Response for Particular Designs
  • Overview of between- and within-family selection
  • Between-family selection
  • Within-family selection
  • Realized Heritabilities
  • Accounting for Epistasis
• Efficiency of Family-Based vs. Individual Selection
  • The Relative Accuracies of Family-based vs. Individual Selection
  • Comparing Selection Intensities: Finite Size Corrections
• Response when Families are Replicated over Environments
  • Between-family variance under replication
  • Ear-to-Row Selection
  • Modified Ear-to-Row Selection
• Selection on a Family Index
  • Response to Selection on a Family Index
  • Lush's Optimal Index
  • Correcting the Selection Intensity for Correlated Variables

PDF versions of a recent draft of this chapter are available. Feel free to use this for personal and/or class use until the book is available. Please note that these are copyrighted and that I would greatly appreciate feedback . Note that while the screen view can look funny in places, the printed output is fine.

• Chapter 8 PDF file ( v. 9 Feb 2000 ): (792K, 54 typeset pages)

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Bruce Walsh. jbwalsh@u.arizona.edu . Comments welcome.