ok, so for a few details. after the new system goes live in October, in the main search box you will be able to search for tobacco accessions by the PI#, the accession code (TI#, TC#, etc), or the cultivar name. however, the latter two options may only become available after I edit the records. I have no access to edit the records until the new system comes online, but im going to try to generate some tables that will be ready for import to get this aspect up and running as soon as possible.
in the advanced search section you will be able to add search criterion such as source location (aka origin). there are a lot of other criterion options (which you can stack), but I think this is the one that will be the most useful.
depending on how busy I am (and whether the site is up or not-- I think they're working on it right now because I couldn't access one section), i'll try to post some advanced screen shots.