Re: HYB: questions about TB genetics

Steve; It is possible to get TBs even when crossing two SDBs let alone any of the other median Iris. The SDBs and others are not that many generations away from crosses with TBs. Today you are probably less likely to have a TB appear in the seedlings than when the SDBs were only one or two generations away from TBs but it can still happen. Obviously early crosses of TBs and I. pumila that gave the SDBs  used earlier TBs. It would be interesting to see what Modern high quality TBs crossed with I. pumila would produce.


----- Original Message ----
From: mahlberg s <s_j_mahlberg@yahoo.com>
To: iris@hort.net
Sent: Saturday, April 5, 2008 7:24:24 AM
Subject: [iris] HYB: questions about TB genetics

Hello,
  I was wondering if it is possible to end up with TB seedlings from crossing any of the smaller  beardeds. Either to themselves or outcrossing or backcrossing to TB again.
  I know that initially TB were developed from crossing various species over generations.
  I also understand that the smaller varieites were developed by intercrossing different species to the TB over generations.
  
  Thanks for the help!
  
  steve zone 4b northeastern minnesota
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