Open Access Research Paper Views (279) Download (6) Inhibition of persian walnut (Juglans regia L.) microcuttings browning by utilizing different methods Abdollah Ehteshamnia, Mansour Gholami J. Bio. Env. Sci.5( 2), 562-571, August 2014. Key: Activated charcoalAscorbic acidBrowningPolyvinyl pyrrolidoneSubculture Details