Yes it is known as the concept of faded genes ----- Original Message ----- From: <ConroeJoe@aol.com> To: <pbs@lists.ibiblio.org> Sent: Tuesday, July 06, 2004 3:13 PM Subject: [pbs] Re: clones lose vigor > In a message dated 7/6/2004 7:33:09 AM Central Daylight Time, > pbs-zonneveld@RULBIM.Leidenuniv.nl writes: > > > most > > clones of vegetatively propagated plants have to be replaced by > > new ones due to loss of vigour. > > > > Hi, > > I have seen this idea before; it has sometimes been mentioned in regard to > rose varieties too. For all I know, it may be correct. > > > Does anyone have published data (scientific data) to support or refute the > idea that clones generally lose vigor over time. > > > Cordially, > > Joe, > 90 F, humid, > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://www.pacificbulbsociety.org/list.php