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Evaluate host genotypes for their general and specific resistance

 

This is a function when the biplot is used in visual analysis of host genotype by pathogen strain two-way data. For the evaluation of host genotypes, the following biplot is most informative:

 

 

Note this biplot have the following settings (compare with pathogen race evaluation):

 

1. host genotypes are treated as entries and pathogen strains as testers;

 

2. tester-centered model (centering = 2);

 

3. entry-focused scaling (SVP =1); and

 

4. the average-tester coordination view

 

Interpretations:

 

H30 > H-Betzes > ... > H33 = Average > ... > H10 = H32 > H16. H30 is most susceptible, and H16 the most resistant.