Tissues that have been frozen are soft and watery after thawing. A dark line separates the affected area from healthy tissues.Freezing injury results when ice crystals form in the cells. Externally, tubers or affected areas of the tubers appear flabby and of a darker colour.Eventually, the lesions dry up in storage.Usually, a short period of frost that penetrates the soil will injure tubers that are close to the soil surface, causing superficial lesions.
