Gene transcription of steviol glycoside biosynthesis in Stevia rebaudiana Bertoni under polyethylene glycol, paclobutrazol and gibberellic acid treatments in vitro
1. Laboratory of Functional Biology, Kasteelpark Arenberg 31, BP 2436, 3001, Heverlee-Leuven, Belgium 2. Department of Biology, Faculty of Sciences, University of Isfahan, 81746-73441, Isfahan, Iran