Recall that Cooper et al. (1999) conducted a resource allocation study for the Thai rainfed lowland rice breeding program in northern Thailand.  In this study over 1000 unselected breeding lines from 7 crosses were evaluated for 3 years at 8 sites.  

 

Variance components estimates were:

 

 

 

Calculate H for the following scenarios:

 

i) Testing in a 4-replicate trial at 1 site

 

ii) Testing in 2-replicate trials at 5 sites in 1 year

 

iii) Testing in 4-replicate trials at 5 sites in 1 year

 

iv) Testing in 1-replicate trials at 5 sites in 2 years