Abstract
Sedum spurium ‘Coccineum' has carmine leaves and red flowers,which is an excellent urban greening plant with strong cold and drought tolerance.In order to expand its application range and enrich the greening materials for hostile habitats,S.spurium‘Coccineum'was introduced from Harbin to Xigaze,Tibet and grew well.The physiological adaptability of S.spurium ‘Coccineum'was studied in the present study.The results showed that with the extension of planting time,the content of malondialdehyde(MDA) in S.spurium ‘Coccineum'leaves gradually increased,the increment was not significant.Proline content first decreased and then increased.The activities of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) all presented the tendency of "first increase then decrease".It was suggested that S.spurium could adjust its physiological metabolism through increasing the contents of osmotic adjustment substances and enhancing the activities of protective enzymes,hence,adapted the high radiation,drought conditions of Xigaze.
Published Version
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