[PHOTO] Re: Rot advancement through a rhizome | Tue, 8 Oct 2002 18:53:51" />
hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
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[PHOTO] Re: Rot advancement through a rhizome

  • Subject: [PHOTO] Re: [iris-photos] Rot advancement through a rhizome
  • From: Margie Valenzuela IrisLady@comcast.net
  • Date: Tue, 08 Oct 2002 16:32:01 -0700

That is so yucky!    Believe it or not, I WAS just eating peanut butter off a spoon. 
Margie V.
Oro Valley, AZ.
Zone 8/9
----- Original Message -----
Sent: Tuesday, October 08, 2002 2:59 PM
Subject: [iris-photos] Rot advancement through a rhizome

This picture shows the rot advancement through a rhizome from the most mature
end to the leaf end. The bottom section of rhizome is inverted and a mirror
image of the top section. Advancement path is more pronounced on the bottom
portion of the rhizome and continues through the rhizome to what was once the
leaf end. Erwinia again appears to erupt to the surface (1). The advancement
on the top side appears to advance only to (3). Discolored area near the leaf
end appears to be the Erwinia attacking the rhizome tissue from the leaf end
(2) perhaps after it has consumed its available food in that area. The
greater penetration of rot on the mature end is obvious.

Healthy sectioned rhizomes have a noticeably yellow tint compared to the gray
exhibited by this infected rhizome. It is possible that gray tissue is dead
tissue and not necessarily infected. I have no way to confirm.

This rhizome is my candidate for "Ugly Iris of the Year" title. It is not
expected to recover from the operation. <g>

Smiles while holding my nose,
Bill Burleson 7a/b
Old South Iris Society

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