Preliminary Study on Physiological Response of 4 Wild Lily Species Under Salt-alkali Stress

In order to find out the saline-alkali tolerance ability of different wild lily species, Lilium sargentiae, L.dauricum, L.sulphureum, L.leucanthum as materials. The effects of different concentrations of NaCl and NaHCO₃ mixed solution on the growth and related physio-biochemical indexes of lily species were studied. The results showed that the content of chlorophyll of the 4 wild lily species decreased with the increase of treatment concentration, Pro and relative electrical conductivity increased gradually; the content of MDA, soluble sugar and SOD activity increased first and then decreased; the content of soluble protein did not change significantly. The order of saline-alkali tolerance of 4 wild lily species was: L. sulphureum>L. sargentiae>L. dauricum>L. leucanthum.