but no test that is available could establish the exact cultivar (the part in quotes, that describe a particular plant or its clones or divisions)
Roberta ------ so there is no such thing as a DNA test that scans the DNA of a confirmed cultivar, and then compares the scan with the sequence for a under-test (comparison) plant?
If we haven't got that sort of capability, then ..... so much for our 'advanced' technology haha.