Ma, Fengshan2006-07-282006-07-2820002000http://hdl.handle.net/10012/501application/pdf6332934 bytesapplication/pdfenCopyright: 2000, Ma, Fengshan. All rights reserved.Harvested from Collections CanadaPlasmodesmata and symplastic transport in onion (Allium cepa L.) rootsDoctoral Thesis