The seeds of Hibiscus sabdariffa were treated with different types and different concentrations of saline-alkali stresses.The results showed that 12.5 mmol/L neutral salt did not inhibit seed germination and seedling growth.With the increase of concen-tration,the inhibition effect gradually increased:alkaline salt was the strongest,mixed salt was the second,and neutral salt was the weakest,and their tolerance thresholds for seed germination were 88.5 mmol/L,99.2 mmol/L and 139.9 mmol/L,respectively.
Hibiscus sabdariffagermination rategermination indexroot to stem ratiowater content