Contents - Index


Functions for host by pathogen data

 

Biplots are a powerful tool for studying host genotype by pathogen strain data. We will use the following data to illustrate the use of biplots. This dataset contains mean response scores of 13 barley groups of varieties to 9 barley net blotch strain or strain groups (data from Gupta and Loughman, Plant Disease 82:960-966, 2001).