[Objective]To investigate the drought resistance of 5 wild Elymus germplasm materials during the germination period,in order to screen out better germplasm for further research on drought resistance.[Methods]With PEG-6000 as the simulated drough treatment reagent,it is configured into 6 concentratio gradient sdutions of 0%(distilled water)、5%、10%、15%、20%and 25%.Different concentrations of solutions were added to culture dishes to determine the germination potential,germination rate,germination index,vitality index,root length and shoot length of the five materials.[Results]As the PEG concentration increased,all the indicators of the five materials showed a downward trend.When the concentration reached 25%,all the indicators reached their lowest values.E02,E04,and E05 materials could no longer germinate,while E01 and E03 could still germinate,but their germination ability was significantly insufficient.[Conclusion]5%concentration of PEG had a certain promoting effect on the germination potential and germination rate of the materials,and the drought resistance of the five materials during the germination period was ranked as follows:E01＞E05＞E02＞E03＞E04.
Elymus genusPEG stressseed germinationmembership function
NETL
NSTL
万方数据
