Research Article
The Seasonal Changes in Endogenous Levels of Indole-3-Acetic Acid, Gibberellic Acid, Zeatin and Abscisic Acid in Stems of Some Apple Varieties (Malus sylvestris Miller)
Department of Biology, Faculty of Sinop Art and Science, Sinop University, Sinop, Turkey
Ibrahim Yalcin
Department of Biology, Faculty of Sinop Art and Science, Cumhuriyet University, Sivas, Turkey