Effect of Salt Stress on Seed Germination and Seedling Growth of Wheat
We used Kehan 16 and Xinmai 9 as the experimental materials to study the effect of mixed salt solutions of NaC1 and Na2SO4 with different concentrations on seed germination and seedling growth of wheat.The 15 kinds of mixed salt solutions were prepared by using NaC1 and Na2SO4 according to 3∶0,2∶1 and 1∶1 ratio with five concentration gradient.Pure water was used as the control.Salt stress was conducted on seeds of Kehan 16 and Xinmai 9.We observed and analyzed the seed germination rate,germination energy,germination index,seed vigor index,seedling length,root length at seedling stage,root number per plant at seedling stage,seedling dry weight and fresh weight.The experimental data showed that high salt concentration inhibited the seed germination and seedling growth of wheat.Meanwhile,different salt components had different inhibitory effects on seed germination and seedling growth of wheat,the inhibitory effect of NaC1 was stronger than that of Na2SO4.