Effect of soil salinity on cold tolerance of mangroveKandelia candel

摘要: Analysis of cold tolerance on mangroveKandelia candel leaf growing in different soil salinity along Jiulong River Estuary South China showed that the decreased as increase salinity. The lethal temperatures ofK. were −10.4, −9.9 and −8.6 °C Liaodong, Baijiao Aotou, respectively. Under 1–2°C stress treatment detached leaves candel, their caloric value gradually decreased, while electrolyte leakage increased. leaf's Aotou with higher varied more largely than those Liaodong lower InK. leaf, total water content lowered a little, bound rose significantly free dropped duration stress. At same time, reduction sugar, soluble sugar starch sucrose Bound water, inK. from changed slowly salinity, but had faster variations Liaodong. These data indicated can reduce by increasing negative effect salt ions cell membrane, inhibiting content, aggravating consumption material energy.