Everyone I know,breeding Hippeastrum, is looking for a comprehensive,complete list of the ploidy of species hippeastrum. In botanical papers and journals there is sporadic information. There is little information available to the average person. There has much discussion about this on the forums Landspro.com , Gardenweb.com and Davesgarden.com . To have such a publication,covering commercial hybrids,is almost beyond dreaming about.The Dutch Don't seem to share a lot of information about the chromosome count or parentage of their hybrids. Those of us breeding Hippeastrum, discover what will breed with what and share the information with each other. Del --- On Mon, 4/12/10, David Maxwell <opbungalow@gmail.com> wrote: From: David Maxwell <opbungalow@gmail.com> Subject: [pbs] Hipp. Hybrids: More Education...Less Guesstimation To: pbs@lists.ibiblio.org Date: Monday, April 12, 2010, 8:23 PM Hi All, it's Hippeastrum flowering season (finally)...and I always make home hybrids with whichever ones bloom simultaneous...well, also keeping in mind that red is the obliteratingly dominate color trait. At some point I'm going to have educate myself with regards to chomosomal compatibility, diploids 'n' tetraploids...'cuz at this point I just cross-pollinate and hope for the best. I remember seeing in books I've read on Hippeastrum that the author actually gave the chomosomal count of various species & hybrids...but other than that, how would I go about finding out whether a particular specie/hybrid is a diploid or tetraploid...or is otherwise genetically compatible? I'm hoping there's a Cliff's Notes version somewhere. -David