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Representative images from the histological study of the ventral sheath of the pod valves. (A) toluidine blue O (TBO) staining, showing ventral sheath of pod valves from MG38 (highly dehiscent), and details of dehiscent zone, thick lignified fibers (sclerenchyma), wood cells, dehiscent zone after cracking (arrow). (B) TBO staining, showing ventral sheath of pod valves from MIDAS (indehiscent), with two details of the indehiscence zone. LF, lignified fibers; WC, wood cells.
