Effects of NaCl stress on ion distribution, absorption and transportation in Cyclocarya paliurus seedling from different provenances

Effects of NaCl stress on ion distribution, absorption and transportation in all organs of Cyclocarya paliurus(Batal.)Iljinskaja seedling from different provenances were studied by water culture method. The results showed that ratios of Na+/Ca2+ and Na+/K+ in root, stem, leaf and petiole of seedling from Huangshan of Anhui Province were the lowest with 0.085 mol·L-1 NaCl stress for 28 d. The ratio of Na+/Ca2+ was more stable than that of Na+/K+ and Na+/Mg2+ in all organs of seedling from three provenances under the NaCl stress with same concentration. Ability of selective transportion of K+,Ca2+ and Mg2+ from root to stem was improved with NaCl concentration increasing, while that of K+ and Ca2+ from petiole to leaf was decreased gradually. It is concluded that the salt resistance of C. paliurus seedling from Huangshan of Anhui Province is better than that of provenances from Kunming of Yunnan Province and Jiujiang of Jiangxi Province.