BIOLOGICAL CHARACTERISTICS OF POLYMYXA BETAE ON SAND CULTURE SYSTEM
砂培体系中甜菜多粘菌生物学特性的研究

The life cycle of polyals betae is only 7 days on an improved sand culture system. The influences of pH illumination and inocula on infectivity and multiplication of Polymyxa betae are tested. The infection period of secondary zoospores, survival longevity of zoospores and resting spores are also determined under this modified sand culture system.