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TLC of broad bean leaf tissue extracts. The plate was developed by ninhydrin. 1, 6.9 nmol 2,4D-Lys; 2, leaf tissues (control); 3, leaf tissues + 6.9 nmol 2,4D-Lys; 4, discs incubated for 6 h in a 1 mm 2,4D-Lys solution and then rinsed three time for 2 min each; a, Chlorophylls; b, 2,4D-Lys RF; c, Lys RF.
