Fig. 4
From: Germination control by a hard seed coat: insights from a tropical legume
Longitudinal section of a Copaifera langsdorffii seed submerged in methylene blue and observed under a stereomicroscope. (A) General view showing seed coat and embryo. (B) Detail of the hilar region from figure A, note the blue staining in the outer seed coat near the hilum due to dye penetration. arrowhead, micropyle; asterisk, methylene blue-stained tissue; co, cotyledon; ea, embryonic axis; hi, hilum; le, lens; rb, rapheal bundle; sc, seed coat. Scale bar (A) = 1 mm, (B) = 300 μm.
