Effects of Salt Stress on Growth and Physiological Characteristics in Dryland Wheat Seedlings

摘要

In order to find an appropriate salt stress and improve the resistance to salt stress in dryland wheat. In this experiment, Jimai22 was used as experimental material to study the effects of different salt stress on growth and physiological characteristics in dryland wheat seedlings by the pots in the artificial climate chamber. The results show that different salt stress could have different effects on leaf length, plant height, aboveground and underground fresh weight, POD and SOD activity in dryland wheat seedlings. Within a certain range of salt stress, salt stress could increase leaf length, plant height, POD and SOD activity and promote the accumulation of dry matter, but if the salt stress range was exceeded, excessive salt stress would inhibit the growth of wheat seedlings. In the salt stress range of 0-0.4%, 0.2% salt stress was the most conducive to promote the growth of dryland wheat seedlings.