GA3 vs other GA's

[Tobias Baskin]

Greetings,
          Is GA3 "normally" active in Arabidopsis? Or is it preferrable to
give some other GA? I asked this question on the plant hormone net and
heard from someone who said that GA3 was ok for a brassica species; but I
was just wondering if anyone out there knows for sure about the situation
in arabidopsis.

         Thanks in advance,

        Tobias Baskin