Re: last pics, I promise

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Chuck,

thanks for catching that error.  The anthocyanin involved with I. fulva is malvinidin, not cyanidin.  As far as i know, this and delphinidin are the only two anthocyanins which have been isolated in Iris, although the logic dictate that other pigments shoulod be possible or even present.  There has been too little research in this area.

-- 
Jamie V.

_______________________

Köln (Cologne)
Germany
Zone 8 

irischapman@aim.com schrieb:

What is the basis for saying fulva has cyanidin? Cyanidin produces nice 
red colour in flowers were it exsits (but in combination with carotene) 
I havn't heard of any evidence of it being in any iris, even in fulva. 
If there is any scientific evidence I'd love to hear of it.

Chuck Chapman


Dennis,



you should give it a go.  The yellow carotenes are from a completely
different pigment system and do not inherit together with the blue to
purple-red anthocyanins.  The chances are good most of the seedlings
will be of a muddy tone, but some magic could occur.  Although I am
unsure what actual pigments are involved with fulva and brevicaulis,
I would expect the later to be mainly delphinidin, with fulva
having cyanidin and violaxanthin.  A yellow fulva should be
missing the cyanidin, but when crossed with another blue, we will see
either a partial blue + yellow, or possibly a violet-blue + yellow,
which is more or less what we see in the species fulva.  I'm
sure someone has tried the cross, so you could ask around, but every
clone is slightly different genetically, therefore results will 
vary.



Just do it! ;-)



--
Jamie V.

_______________________

Köln (Cologne)
Germany
Zone 8