Cold stress, including chilling stress(< 10°C) and frozen stress(< 0°C), is a significant factor limiting geographical distribution of plants and agricultural production of crops. Chilling stress can directly affect physiological metabolism and stunt the development of plants. Chilling stress reduces photosynthetic rate of plants and the synthesis, allocation and transport of photosynthetic products are all influenced seriously. Chilling stress even induces secondary dehydrated and ostimic stress by inhibit...