Plasma-membrane Peroxidation and Osmotic Substances Changes of Sambucus coreana Seedlings Under NaHCO3 Stress Effects of SNP on the growth and nitrogen metabolism enzymes activities of cucumber seedlings under NaHCO3 stress Regulation of exogenous nitric oxide on photosynthetic physiological response of Lolium perenne seedlings under NaHCO3 Stress Physiological Responses of Iris to NaHCO3 Stress