(Course expiry: 90 days after purchase.)

ASRtriala is a companion package for ASReml-R to help audit and prepare data and then select the 'best' model for the analysis of field trials. A set of spatial and non-spatial models can be pre-defined to be fitted, and then the 'best' single-trial model selected can be used as final analysis, or as the first part of a two-stage multi-environment trial (MET) analysis. ASRtriala has functions available to fit a range of MET model with complex variance-covariance structures (including factor analytic) to model GxE as nested effects.

This course will walk you through its main tasks including:

- Auditing and preparing single-trial data and MET data.

- Fitting and selecting a single-trial model (including spatial models).

- Fitting and selecting an MET model.

- Enhancing output from MET models (particularly for factor analytic models).

This 3-session course is designed and taught by Dr. Salvador Gezan, who is a statistician/quantitative geneticist with more than 20 years’ experience in breeding, statistical analysis and genetic improvement consulting.

ASRtriala is a companion package to ASReml-R, so it requires an ASReml-R license to run. If you do not currently use ASReml-R you can request a free 7-day ASReml-R license. Please email support@vsni.co.uk after registering for this course.