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Joseph's Coat (Fall) up close

  • Subject: [PHOTO] [iris-photos] Joseph's Coat (Fall) up close
  • From: "Dan Meckenstock" dmeck@eaglecom.net
  • Date: Wed, 11 May 2005 15:41:39 -0500

Micro-pic of a fall of Joseph's Coat.  The fall generally has purple veins on a white background with yellow broken color.  This micro-pic captures all three of these elements.
 
Note how colors are contained within each cell.  Not a lot of leaching of
anthocyanidins outside the cell. Of particular interest is how the apparent
color of the anthocyanidin changes from blue to red when yellow carotenoid
granules are also present in the cell (bottom right corner).
 
Preparation:  surface lightly scraped with razorblade, specimen in drop of
tap water, coverslip tightly pressed on. Magnification 100x
 
Dan Meckenstock
Hays KS


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