Re: iris DIGEST V1 #746

Broken color has appeared spontaneously in my seedlings two or three  times 
in the past 20 years. I have also worked with a number of broken  color lines 
based on 'Maria Tormena' and 'Brindled Beauty'. Broken color is  completely 
independent of plicata. The bc factors seems to be randomly turned on  or off 
during cell division and once turned on stays on in all the suceeding  cells 
produced from the initial turned on mother cell. Hence the streaks of  either 
colorless or colored areas. A bc can be plicata and broken at the  same time. In 
sections of the flower where the bc is not working, the  plicata effect is 
seen. I think the idea that BC and plicata are connected may  have come from the 
fact that the first thing hybridizers thought of when  encountering BC was to 
cross it with plicatas because the bc factor looked like  plicata out of 
control. The broken color factor has the ability to reverse the  effect of other 
anthocyanin pattern factors in the  wedge of tissue in  which the bc factor is 
turned on. Thus a bc factor in a variety with white  standards, and blue falls 
can give white standards streaked with blue and blue  falls streaked with 
white. Wow, that's bit too much to think about on Christmas  Eve.
 
As the result of crossing my  bc line with 'Louisa's Song' I will be  
introducing a broken color which is over 36" with a large flower and quite  enough 
buds. Introduction 2010 or 2012.
 
Fred Kerr
Rainbow Acres
 
 
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