Abstract:

The aim was to study the mechanism of salt-resistant of Limonium aureum (L.) Hill. The Characteristics of plant salt-resistant structures were studied by the method of paraffin section and light microscope from plant anatomical structure view. The epidermal cells were arranged compactly, and the typical salt glands were distributed in those cells. In addition, they also had thick cuticular and increment external tangential wall which were used for decreasing water evaporation. The vascular tissue in the roots was developed. Moreover, there were some other tissues whose function had not due to salt-resistant, but they contributed to enhance the salt resistance through increasing the transfusion tissue, mechanical tissue and assimilating tissue. There were a lots of salt glands distributed in the epidermis of leaves and caulis, which were typical characteristics of halophytes. In the course of adaptation, the salt gland, developed transfusion tissue, mechanical tissue and assimilating tissue were the basis of increasing the ability to salt resistance of L. aureum (L.) Hill.