Re: RE: Red-toned rebloomers (was RE: First 08 rebloomers)

-----Original Message-----
>From: Ann Head <jac@labdude.com>
>Sent: Jun 10, 2008 12:08 AM
>To: iris@hort.net
>Subject: Re: [iris] RE: Red-toned rebloomers (was RE:  First 08   rebloomers)

>But if such a blue with four copies of t were crossed to a pink with 
>a dominant white gene, you should be able to get pink seedlings?
>>

Yes, that is absolutely true.  However, the only way you would know if a blue is carrying 4 copies of lycopene is if all the carotenoid producing seedlings it produces with pinks are pink.  The only way you can tell is by breeding behavior.  There are no visual identifications, except maybe if it has tangerine red beards or maybe some tinge in the crests.  Atest cross with a pink with a diminant white gene might be helpful assuming you can afford the space and time. But if you are breeding for red then a 
dominat white gene is really of no interest to you.  The recessive whites would be the route to go.  

The recessive whites and blues/purples ect. (I have observed) have a much greater tendency to be cold climate rebloomers (Zone 5 and colder).  I'm guessing there is a very tight linkage between the Dominant white gene and one of the rebloom genes.  So far getting the right combination of rebloom genes and a Dominant white gene into the same set of chromosomes has been very difficult.  It has been done I think.  I have a very small list of plants I think are Dominant white, cold climate rebloomers and have been trying to obtain some of them over the years to get them into my breeding program and see if they are actually what I think they are.  The only one I am sure of is one of my own seedlings.


Yes, oddly enough carotenoid amoenas are recessive.  Generally you will only get selfs of or pale standards when you cross a caotenoid amoena with a uniformly applied carotenoid flower.  When you cross a carotenoid amoena with another carotenoid amoena all you get is carotenoid amoenas assuming all the seedlings show carotenoids.  And not to confuse the issue but clarify, carotenoid amoenas can have anthocyanin as well such as in 'Electrique' or a blue self with carotenoid falls or 'Chinese Treasure' or 'Starring' which are carotenoid AND an anthocyanin amoenas combined.

So (in theory) you can combine carotenoid plicatas with all the anthocyanin patterns and some of the other carotenoid patterns because they are controlled independently.


Paul Archer
Raleigh, NC  Zne 8

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