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The image represents a seed of Magnolia sp. (a) and the ellipse (c). Shared regions are represented in (b) and the total (shared plus nonshared) in (d). J index is the ratio between shared regions and the total: J = (area (C)/(area (C) + area (D))) × 100, where C represents the common region and D the regions not shared. Scale bar represents 0.5 cm.
