Cloning and Expression Analysis of BnFLA Gene from Brassica napus Effects of Arabinogalactan Proteins on Pollen Germination and Pollen Tube Growth of Torenia fourieri and Nicotiana tabacum L. Immunolocalization of Arabinogalactan Proteins and Pectins in Floral Buds of Cucumber (Cucumis sativus L.) During Sex Determination Chemical Studies on Immunologlcally Active Polysaccharides of Ganoderma lucidum (Leyss. ex Fr.) Karst