Re: Iris abicans/questions and blather


I'm glad you are getting some success. I tried the suggestion of using
tape to remove a layer of cells from the surface of a flower. It
worked on some flowers but couldn't get the top level off the coloured
leaves of a poinsetia.

The arils should have AVI in the dark aril spot area. 

Chuck Chapman


> I've examined the cell structure of the outer layer of albicans. I
cannot 
> with certainty say it is one layer thick but think so. The problem I
incounter is 
> the focal plane of the microscope does not allow depth examination.
> 
> I found it best to examine a specimen that contained a full petal
thickness 
> and the the petal surface tissue in question. I could then follow
the edge of 
> the tissue separation from its inital start to its widest point and
make visual 
> comparisons between the cell structures on both sides of the
separation line.
> 
> I've not found my blank slides yet. I viewed the above on a lucite
lid from a 
> string tag box. The scope is designed to hold specimens on thicker
material 
> but this worked pretty good and was only a bit frustrating. A slide
mounting of 
> the specimen will allow viewing without so much focusing and
refocusing of 
> the instrument. Examination at higher powers will also be more
practical. For 
> now I only viewed at successfully at lower powers.
> 
> An update:
> I've managed to find a single blank slide. Clear cellophane tape
provides the 
> best method for securing the specimens to the slides. Exciting at first 
> because of being able to examine the cell structure, albicans became
boring over 
> time. No tints present other than gray. Examinations became more
entertaining 
> viewing a specimens from an aril bred. There was a whole new world
of color in 
> the falls of Zizha. I detected no AVI.
> 
> The cell shape was of course different between the irises and the
lisantus 
> photo you sent. Otherwise they looked pretty much the same except
there were no 
> spherical shaped inclusions in the irises. I will continue the
search as more 
> irises bloom.
> 
> Smiles,
> Bill Burleson





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