RE: Leaf Spot: Gene
- To: Multiple recipients of list <i*@rt66.com>
- Subject: RE: Leaf Spot: Gene
- From: D* F* <d*@cornell.edu>
- Date: Sun, 8 Feb 1998 19:23:41 -0700 (MST)
At 08:44 AM 2/8/98 -0700, Christy wrote:
>I'll have to disagree with the following idea....
>
>> If it's linked to a gene, I think the gene must be essential
>>for an iris to be an iris!
>
>I'd bet that a lot of the problems with leaf spot are inherited.
>
>When was the last time (if ever) you heard of leaf spot on Dwarf =
>beardeds, Psuedocorus, Sibs, etc....
Got me! I should have specified "bearded" iris. I don't see leaf spot on
Sibs, JIs, pseudocorus, etc.
But I DO see it on every class of bearded iris--including SDBs, and even on
some of the few MDBs I have grown. Yup, even on arilbreds and
aril-medians, though I think they are less susceptible (have to remember to
check on this more extensively).
Someone (Edmundas?) noted that acid soils can be a problem--and Walter
mentioned that loose sandy loam seems worse than heavy clay. I have both
of these "offending" conditions....
Dorothy Fingerhood
daf10@cornell.edu
Newfield, NY, USA
