Mycelial Biomass and Extracellular Polysaccharide Production by Five Strains of Morchella Grown in Submerged Culture Using Different Carbon and Nitrogen Sources

XIE Zhanling, HE Zhiyuan, TANG Longqing, WANG Xuelu, ZHU Haimei, YANG Jiahua, SA WeiSchool of Animal Sciences and School of Veterinary Medicine, Gansu Agricultural University, Lanzhou, Gansu , China, Department of Biological Sciences, Qinghai Univers