Effects of Exogenous Calcium Chloride, Salicylic Acid and Nitric Oxide on Drought Resistance of Lycoris radiata under Drought Stress
Pot experiments were conducted to investigate the effects of exogenous calcium chloride (CaCl2), salicylic acid (SA) and nitric oxide donor sodium nitroprusside (SNP) on drought tolerance of Lycoris radiata under drought stress. The results showed that lower concentration of CaCl2 had no significant effect on drought resistance of L. radiata, while the drought resistant effect was more remarkable with the increase of pretreat-ment with different CaCl2. Lower concentration of SA and SNP could significantly improve the drought resistance of L. radiata, while higher concentrations would lead poisonous effects. Comprehensive evaluation of osmotic regulation substance, membrane system and antioxidant enzymes activity suggested that 10 mmol-L"1 CaCl2, 2 mmol·L-1 SA and 0.5 mmol·L-1 SNP were the suitable pretreatment to enhance the drought resistance of L. radiata.
NETL
NSTL
万方数据
维普
