Effects of different types of salt treatments on the germination characteristics of three wild Ach-natherum splendens seeds
[Objective]Achnatherum splendens seeds collected from three different regions were used as materi-als to study the effects of different neutral salts on the germination characteristics of their seeds in order to explore the response of Achnatherum splendens seed germination to different types of salt stress.[Method]The membership function method was used to comprehensively evaluate the salt tolerance of Achnatherum splendens seeds at germina-tion stage in three different regions,and to screen out germplasm resources with stronger salt tolerance at germination stage,in order to provide theoretical basis for Achnatherum splendens planting and new variety breeding in saline-alkali areas.[Result]The results showed that low concentration of NaCl could promote the germination of BT splen-dens,high concentration of NaCl could inhibit the germination of ZY,YL and BT splendens,and Na2SO4 had inhibi-tory effects on the radicle growth of three splendens.With the increasing concentrations of NaCl,Na2SO4 and mixed salts,the germination rate,germination potential,germination index and vigor index of the three Achnatherum splen-dens seeds gradually decreased,and the germ length and radicle length decreased gradually.According to the compre-hensive evaluation by membership function method,the salt tolerance of Splendens seeds under the three salt stress treatments is as follows:(Zy-mixed salt)>(BT-NaCl)>(YL-mixed salt)>(YL-Na2SO4)>(ZY-Na2SO4)>(ZY-NaCl)>(BT-mixed salt)>(BT-Na2SO4)>(YL-NaCl).[Conclusion]ZY and YL Achnatherum splendens had the strongest tolerance to mixed salt and the worst tolerance to NaCl.BT splendens had the strongest tolerance to NaCl and the worst tolerance to Na2SO4.
万方数据
维普
