Experimental Designs and Data Analysis for Breeding Trials

The course is designed to acquaint Plant Breeders with the principles of experimental design, experimental designs used in breeding trials, analysis of variance and regression and correlation analysis.  It also introduces PBTools, a user-friendly software that uses GUI created in Java and functions developed in R to assist Plant Breeders in the design and analysis of data.   It employs a combination of lecture, group exercises, and hands-on exercises using PBTools.


  • Review basic statistical concepts
  • Describe the three essential components of an experimental design and explain the importance of each component.
  • Identify the advantages and disadvantages of using the different experimental designs used in variety trials.
  • Generate randomization and electronic field book using PBTools.
  • Demonstrate how to import tab and comma delimited files into PBTools.
  • Demonstrate how to sort and reshape data files using PBTools.
  • Perform analysis of variance using PBTools.
  • Determine the appropriate transformation for a given set of data.
  • Present remedial measures in handling missing data
  • Perform regression and correlation analysis.


  • Basic Statistics
  • Principles of experimental design
  • Experimental designs used in breeding trials
  • Analysis of variance and Mean Comparison
  • Data transformation
  • Missing data
  • Regression and Correlation Analysis


International Rice Research Institute (IRRI)
Los Baños, Laguna, Philippines


Ms. Violeta Bartolome

Senior Associate Scientist - Biometrics
Biometrics and Breeding Informatics
Plant Breeding, Genetics, and Biotechnology

International Rice Research Institute
DAPO Box 7777, Metro Manila, Philippines
Fax: (63- 2) 891-1292; 580 5699
Phone: (63- 2) 845-0563; 580 5600 ext 2895
Email:  v.bartolome@irri.org