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Abstract
Cranberry cuttings grown in external solutions with several concentrations of Mn (0 to 1000 ppm), Fe (0 to 100 ppm) supplied as FeEDTA, and Al (0 to 150 ppm), showed tolerance to accumulations of high concentrations (8000 ppm from 1000 ppm in external solution) of Mn in the tissue and the ability to selectively exclude high level accumulation of Fe and Al from shoots. Root initiation by softwood cuttings was inhibited at high levels of Mn (275 ppm and above), Al (2.5 ppm and above) and Fe (2.5 ppm FeEDTA and above) in external solution.