Re: Rot advancement through a rhizome
- Subject: [iris-photos] Re: Rot advancement through a rhizome
- From: "lmmunro" l*@hotmail.com
- Date: Wed, 09 Oct 2002 03:48:30 -0000
Yeah, its yucky...but your photography is great.
Laetitia
--- In iris-photos@y..., oneofcultivars@a... wrote:
> 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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