[Maize] relationship of Maize inbreeding lines

[Chi-Chih Wu]

Hi
Does anyone know whether there is a tree-like graphic to show the  
relationship among maize inbreeding lines?
I have the book "Compilation of North American Maize Breeding  
Germplasm" on my hand.
It is pretty helpful. But I saw a diagram on the cover to show  
relationship among Minnesota 13 complex.
It would be helpful for me to find out a graphic or diagram like this  
one to show the relationship among major lines.
Thanks.


Chi-Chih Wu