Take a look at Research Organics' MSDS (revised 1/19/2009)
www.resorg.com:
MUTATION DATA:
TUMORIGENIC DATA:
Oral TDLo - mouse = 142 g/kg/78W-I (Toxic Effects: Equivocal tumorigenic agent by RTECS criteria;
Lungs/Thorax/Respiration Tumors; Liver Tumors).
Oral TDLo - Amphibian (toad) = 13200 mg/kg/22W-I (Toxic Effects: Equivocal tumorigenic agent by RTECS
criteria; Liver Tumors).
Further testing to determine actual mutagenicity and tumorigenicty is necessary. Classification into either of these
categories is not yet warranted until further tests are performed.
Only selected toxicological data is presented here. See actual entry in RTECS for complete information.
CAUTION! THE TOXICOLOGICAL PROPERTIES OF THIS MATERIAL HAVE NOT BEEN FULLY
INVESTIGATED. FOLLOW GOOD LABORATORY PRACTICES WHEN HANDLING.
DNA Damage - Salmon sperm = 1 mmol/L. Cytogenetic analysis - Human lymphocyte = 3 mmol/L. DNA
damage - Mammal (species unspecified) Lymphocyte = 1 mmol/L.
Note their caution (I highlighted it in red).
Note also they are reporting DNA damage at 1mmol/L. The molecular weight of GA3 is 346.38 so 1mmol/L is 0.346 g which is less than the standard working solution of 1 gram/L (1% or 1000ppm).
Have your cavalier attitude if you want. You won't find me working with this stuff without a mask, goggles, long sleeves and gloves (e.g. good laboratory practice).
And did you use the 1% solution to treat all the seeds? The standard 1000 ppm solution can kill the seed of some species. You might have to go down to a little as .1% (100ppm). I don't know if there is any systematic studies on Drosera other than Norman C. Deno's work (see First Supplement to the Second Edition of Seed Germination Theory and Practice, second printing July 10, 1997). With the Drosera species studied he notes:
Germination in 70 GA-3 was always poor and often zero. 70 refers to 70F for the temperature. Species in question D. aliciae, D. anglica, D. binata, D. binata v. multifida, D. burkeana, D. capensis, D. spathulata.
Of the species I've treated with GA3 at the standard 1000 ppm - D. hilaris, D. cistiflora, D. filiformis var filiformis, and D. intermedia only D. hilaris germinated. Unless the seed was no longer viable to begin with these and Deno's results suggest to me that a lower concentration of GA3 may be needed.
Deno's work can be downloaded from the National Agricultural Library. It is no longer in print.
http://ddr.nal.usda.gov/dspace/handle/10113/41278
http://ddr.nal.usda.gov/dspace/handle/10113/41279
http://ddr.nal.usda.gov/dspace/handle/10113/41277