Genetic drift analysis?

[Daniel C.]

Hello,

I'm curious about wild oats; apparently they are very good at hitching a ride with humans whenever we go to new places.  I'd like to perform some kind of analysis of wild oat genetics to see if it's possible to estimate how far in the past different populations diverged.  If I understand correctly, what I'd be looking for are signs of genetic drift.

If I'm on the right track, what tools are available / need to be created to perform such an analysis?  Also how can I find out what, if any, genetic information on wild oats is available?

Thank you,

Daniel