Of course, the answer is what it always is: it depends. But you can hear (and see) all the details thanks to Mike Jackson, who has made available on his blog both an audio file and the PowerPoint slides pertaining to a recent seminar on the subject by Fiona Hay of IRRI’s genebank. Thanks, Mike. And thank, Fiona.
And if the subject really grabs you, there’s a post-doc position going in France.