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Al content in the root apices of buckwheat cv Jiangxi and cv Shanxi. Three-day-old seedlings were exposed for 24 h to a 0.5 mm CaCl2 solution, pH 4.5, containing 0, 10, 25, 50, or 100 μm Al. Root apices (0–1 cm) were excised and the Al concentration was determined by inductively coupled plasma atomic emission spectrometry. Data are means ± sd (n = 3).
