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Effect of polyamines on lateral root formation. (A) A wild-type seedling grown for 5 days in MS solutions (upper panel) and that supplemented with 100 μM thermospermine (lower panel). (B) Number of lateral roots in wild-type seedlings grown for 5 days in MS solutions supplemented with 100 μM each polyamine. Numbers correspond to those of the carbon shown in Table 1. Error bars represent the SE (n = 10).
