ABSTRACT
Tolerant plants to cold stress could be a promising solution, however, generating these types of crop plants or increasing their tolerance to cold stress via biochemical approaches always been successful due to the complexity and duration of cold stress on crop plants. Cold stress results in many physiological and biochemical modifications in crop plants such as germination, photosynthesis, cell division, flowering, fruiting and seed quality. When chemicals are applied to crop plants to increase the tolerance of cold stress, every aspect that deals with plant defence responses should be considered. The most affordable and environmentally-friendly way for the management of cold tolerance would be cultivating of cold-tolerant crop plants. Conventional breeding methods can be used to improve the conditions of crop plants for cold stress, however, it is considered that it would take a great deal of time, and would be more appropriate to apply cold-tolerant microorganisms to plants under cold stress.
