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Chemical staining of seed coats from the black-seeded line (94570), brown-seeded near isogenic line B-NIL, and yellow-seeded lines No. 2127-17 and Y-NIL during seed development. (A) Seeds from the four lines. (B–D) Seed coats before staining (B), after vanillin staining (C), and after DAMACA staining (D). Daf, days after flowering.
