Re: naming irises

 

Moring, all,

The entire concept of cultivar is to designate a horticultural form. A clone is a cultivar, but a cultivar may not be a clone. Clone is more specific. Clones should receive specific names and exacting parentage (as possible) to ID the clone, yet a cultivar, such as a seed strain, has a list of characteristics which should be met to call it that cultivar. Genetically we are differentiating between the genotype and the phaenotype. Most commercial Strain cultivars are F1 hybrids between specific parentages (could be individual clones or established strains), there are a few F2 versions as well (which, Chuck, are not technically selfings, but must be siblings. The F does stand for Filial and requires sisters/brothers and may even be a back-cross to a parent, although this is generally noted, as we are talking a stronger concentration of the gene pool. Line breeding. A selfing is an F2, as well, but rareer as many plants, as we know, are not self-fertile. The definition is pretty loose, as there is no need to overly restrict the process. If one did, we would need many more bits of nomenclature.)

In a practical sense, a strain is typically 80% or so true, while a clone must be 100% true, baring mutations that may happen in tissue propogation (we see a lot of this in orchids).

Registration is pretty straight foreward and done with the registering body as designated by the main registry at Kew Gardens (RHS). AIS is official for Iris, AHS is responsible for Hemerocallis, etc. Both register only clones! As there are many more registrations as truly useful plants, it is wise to consider if a specific cultivar should be registered. And there is generally a fee. I have personally registered a handful of Hems., but have yet to produce an Iris worthy of registration.

Hope this helps...

Jamie
Cologne, Germany

Am 05.02.2015 um 00:49 schrieb Chuck Chapman i*@aim.com [iris-species]:
It is  the difference between a seed line and a perennial.  A perennial 
is a 'one off' situation. Seed-line  are a family   with genetic  
traits that are very similar, but still individual variations between 
plants.

  Along those lines,  F2  is technically  a self cross, not a cross of 
siblings.

Chuck Chapman


-----Original Message-----
 From: s*@bellsouth.net [iris-species] 
i*@yahoogroups.com
To: iris-species i*@yahoogroups.com
Sent: Wed, Feb 4, 2015 6:41 pm
Subject: Re: [iris-species] naming irises






Help me on a technical point. The lecturing professor's assertion is 
certainly one of those huh? moments that always come up in a good 
discussion of cultivar. I have to assume the man is exquisitely 
correct. Registering a cultivar with the AIS appears to the encouraged 
protocol for introducing one's iris to the community. If one wants the 
cultivar to remain genetically synonymous with a certain clone, how 
might one go about this? For discussion's sake, how could it be done 
strictly within the current protocol? If we need to discuss changes of 
protocol, do that after exhausting the "no changes" options.







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Posted by: Chuck Chapman i*@aim.com
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