INFLUENCE OF GIBBERELLIN AND AUXIN 



343 



Table V. Long-Day Plants in Which Flower Formation Has Been Induced or 

 Promoted under Short-Day Conditions by Gibhercllin Treatment 



" I, flower formation induced (controls vegetative, at least for duration of experiment) ; 

 P, flowering promoted (in parentheses: difference of flowering time between treated plants 

 and controls). In some cases, this information is preliminary in character. 



like materials, and whether these are affected by photoinduction or 



thermoinduction. I cannot yet present results of such experiments, but 



Dr. Lona will fill in this gap to some extent (next paper). ^ However, I 



^ Note added in proof: In the meantime, I have been able to obtain evidence 

 for the presence of gibberellin-like materials in annual Hyoscyamus plants and 

 for quantitative and/or qualitative diflferences in the "gibberellin" content of 

 vegetative and photoinduced individuals of the species (unpublished data). 



