Changes of Ca2+ -ATPase Activities in Cell of Rice Seed lings During the Enhancement of Chilling Resistance Induced by Cold and Salt Pretreatment The Induction for Adverse Temperature Tolerance During the Germination of Radish Seeds Comparison of the Changes of Membrane Protective System in Rice Seedlings During Enhancement of Chilling Resistance by Different Stress Pretreatment Adverse temperature tolerance induction in cabbage seed at germination stage