The Ceora grasspea story has generated quite some response. Dirk has an answer to the problem of documenting the pedigrees of new varieties:
The simplest solution is to ask breeders when they decide to publish their pedigrees (some may have good commercial reasons not to), to reference any of their parent material, which originated from gene bank collections, with the original donor’s ID numbers.
Jeremy wants to know about DOIs. And you can also hear from Ceora’s main breeder, Colin Hanbury, that some things will probably remain a mystery.