Evaluation of salt tolerance of maize germplasm in seedling stage.

In this study,96 inbred lines of maize were identified according to the grading indexes of seedling appearance and change rate of height and dry weight of seedlings.The classification results showed that there were 8 high salt tolerance inbred lines of maize,for example,A069,F564/711,oh45/O2 and Black maize.Huangzaosi,Mo17 and ZP291 showed salt sensitive or highly sensitive.The classification results of the seedling appearance,change rate of height and dry weight were in agreement,and the correlation of any two variables both reached the extremely signif-icant level.In the 96 inbred lines,the proportion of high salt tolerance,salt tolerance,moderate salt tolerance,salt sensitive and highly sensitive inbred lines were 20.8%,51.0%,22.9%,4.2% and 1.0% respectively.