INTERESTING INFORMATION, ALAN. Thanks for paying attention here. Is this kind of thing common among tetraploid forms of natural diploid liliaceous plants? , e.g. irises. It doesn't seem to happen among tetraploid bearded irises or their hybrids. Adam . ----- Original Message ----- From: "Nolo Contendere" <bulbman@hotmail.com> To: <pbs@lists.ibiblio.org> Sent: Wednesday, January 27, 2010 5:05 PM Subject: [pbs] Spontaneous seed set on Hippeastrum > Dennis, > > Tetraploid (2n = 44 chromosomes) hippeastrum hybrids and those few > tetraploid spp., frequently self pollinate and set seed. The > self-incompatability of deiploid amaryllis breaks down when the > chromosomes are doubled. > > Alan Meerow > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/