Identification of Tolerance of Wheat (Triticum Aestivum L.) With Different Ploidy under Salt Stress

Abstract

In this study, different ploidy wheat were used as experimental materials to explore the effects of different concentrations of NaCl stress on (Triticum aestivum L.) of different wheat. The effects of varieties, germination period and seedling growth provide a theoretical basis for the cultivation of salt-tolerant wheat varieties. 3AA6, Chinese Spring and longdon were used as experimental materials to analyze the indexes of wheat germination energy, germination rate, root length and high salt tolerance of wheat under different concentrations of NaCl solution stress. With the increase of NaCl salt concentration, the germination energy, germination rate, plant height, root length, seedling and root fresh quality of the three wheat varieties decreased gradually. The effect of NaCl on the growth of wheat seedlings at germination stage was mainly to inhibit the growth of roots and buds, in which the growth rate of roots was inhibited most strongly by salt stress, followed by the growth rate of buds, and the inhibition on the number of roots was the least. There were significant differences among varieties and concentrations. According to the performance of the three experimental varieties, Chinese spring showed strong salt tolerance at seedling stage, longdon showed poor salt tolerance, and 3AA6 showed the worst salt tolerance at seedling stage.