Fwd: ethylene gas and the growth of Brassica rapa

David W. Kramer kramer.8 at osu.edu
Fri Mar 9 08:45:57 EST 2001

Do we have any plant hormone specialists out there who can help this
student researcher?  A very interesting project!  Lisa sent this message
originally to Paul Williams who responded to her and then suggested she
contact me.  Now I'm asking for other to get involved.  I personally cannot
give advice about plant hormones.  Help!

Dave Kramer

>From: "Lisa Bryan" <lisabryan at bridgeportneb.com>
>To: <Kramer.8 at osu.edu>
>Subject: ethylene gas and the growth of Brassica rapa
>Date: Thu, 8 Mar 2001 15:29:09 -0700
>MIME-Version: 1.0
>X-Priority: 3 (Normal)
>Importance: Normal
>March 6, 2001
>Dear Dr. David Kramer-
>    I am emailing you on behalf of my student - since our school does not
>permit students to use email. We had contacted Dr. Paul Williams and he
>suggested we contact you.
>    She has been researching the effects of ethylene gas produced from Red
>Delicious Apples on the growth of Wisconsin Fast plants - Rapid Cycling
>Brassica rapa. 
>    She planted 120 Brassica seeds. She set up a control.  She has 4
>experimental groups - all exposed to ethylene gas; however some were
>exposed to ethylene gas as seeds - that is before planting - as well as
>after planting. 
>    She has observed some unique reactions from the ethylene gas...that
>is the plants in the experimental groups were shorter with an average
>height of 9.5 cm compared with the control with an average height of 12.9
>cm.  Additionally, the experimental groups seem to have small sexually
>immature flowers since all seed pods were small and are void of seeds
>capable of germination.  Experimental groups also experienced twisted
>stems, curled and yellow or very bright leaves, leaf abscission and
>reddened stems. The average germination rate of the experimental groups
>exposed to ethylene gas was 56.5 % compared to the control of 46%.
>    My student wanted to know if there has been any similar research in
>this area.  Also, do you have any suggestions that may help her in her
>    Thank you very much for your time and help.
>PO BOX 430 (800 Q ST)
>PHONE: (308) 262-0346 (10:00 to 10:45 AM ONLY)
>FAX: (308) 262-0444
>The mediocre teacher tells.
>The good teacher explains.
>The superior teacher demonstrates.
>The great teacher inspires.

David W. Kramer, Chair
Education Committee
Botanical Society of America

Asst. Prof. of Evolution, Ecology, and Organismal Biology
Ohio State University at Mansfield
1680 University Drive
Mansfield, OH  44906-1547
Phone:  (419) 755-4344      FAX:  (419) 755-4367
e-mail:  kramer.8 at osu.edu
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