questions about gibberellins

Ross Koning Koning at ECSUC.CTSTATEU.EDU
Wed Nov 20 08:12:07 EST 1996


At  2:12 PM 11/19/96 +0000, Nancy Harrison wrote:
>In our Gibberellin expt, we use 1 microgram/ml of GA, and this concentration
>has an effect on normal peas as well as dwarf. This is a very simple
>expt that is designed to show dwarf plants overcoming their dwarfism
>rather than any other great truths about GA.

I generally do this project with a solution of B-9 as a soil drench
too.  If you hit the seedlings when the epicotyl is just clearing
the soil surface, both the GA and B-9 effects are quite striking.
The GA converts the dwarf (Little Marvel or Sugar Bon) into a "tall",
and B-9 converts the tall (Alaska or Sugar Snap) into a "dwarf."
B-9 is thought to block synthesis of GAs.

ross

______________________________________________________________
                            |
Ross Koning                 | Koning at ecsu.ctstateu.edu
Biology Department          | http://koning.ecsu.ctstateu.edu/
Eastern CT State University | Phone: 860-465-5327
Willimantic, CT  06226  USA | Fax: 860-465-5213
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                Plant Physiology is Phun!

 /\|___/\     //\______COOH   NH-CH2-CH=C-CH2OH  \/OH
|  |  |  |    |  |  ||       //\___     \CH3     /\|/\\/\\COOH
 \/ \/|\/|    \\/ \ /       N  ||  N            |  |
 /\ | |__|=        NH       |  || ||           //\//\
  | COOH                    \\ /\ /            O
  COOH        H2C=CH2         N  NH
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