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Effect of salt on the content of ions in the leaves of Qinghua45 (QH) and Biyuchunhua (BY). (A) Content of K+. (B) Content of Na+. (C) Content of Mg2+. (D) Content of Ca2+. All data were determined 20 days after NaCl treatment. Data are the means ± SD, and the different letters (a–d) indicate a significant difference at P < 0.05 according to Duncan’s test.
