%0 Journal Article %A JIA Ling-Yun %A JIANG Yu %A LIU Yan %A SHI Ru-Xia %A WEI Xue-Ling %A YANG Ying-Li* %A ZHANG Hui %T Effects of Exogenous Nitric Oxide on Seed Germination and Physiological Characteristics of Wheat Seedlings under Lead Stress %D 2011 %R 10.7525/j.issn.1673-5102.2011.01.007 %J Bulletin of Botanical Research %P 34-39 %V 31 %N 1 %X By the method of solution culture, wheat was used to investigate the effects of exogenous NO donor SNP on seed germination and seedlings physiological characteristics under Pb2+ stress. The results showed that Pb2+ treatment resulted in significant decreases in seed germination and seedling growth of wheat,and notable reduction in the levels of chlorophyll a, chlorophyll b and chlorophyll fluorescence, 25 μmol·L-1 SNP could alleviate the inhibition of Pb2+ on these indexes. No significant changes in the activities of CAT and POD were observed in comparison with the control under Pb2+ stress. However, the application of SNP induced increases of CAT activity and soluble protein content in wheat seedlings under Pb2+ treatment. Therefore, exogenous NO could alleviate the poison of Pb2+ and enhance the adaptation of wheat seedlings to Pb2+ stress. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2011.01.007