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Paired lesions on leaves

Marc Cortese corte922 at UIDAHO.EDU
Mon Mar 4 15:48:50 EST 1996


Dear Arabnetters,

I have recently started growing Columbia ecotype under 24 hour photoperiod
and noticed an odd phenotype.  I wonder if any of you have observed the
same.  This particular tray of plants was germinated and grown under a 11
hour photoperiod for the first two weeks then transferred to continuous
illumination (grolux bulbs) for a further two weeks.  All the plants in
the tray show paired lesions associated with the lateral margins of leaves
1 and 2 (and sometimes 3 and 4 as well).  The lesions are yellow/brown and
the two lesions found on a single leaf are always the same distance from
the leaf tip.  There doesn't seem to be any preferred distance from the
leaf tip.

Marc

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Marc Cortese                                  Lab: (208) 885-9431
Department of MMBB                           Home: (208) 882-8810
University of Idaho                           Fax: (208) 885-6518        
Moscow, ID  83843                     e-mail: corte922 at uidaho.edu
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