Fig. 8.

Cracks in seed coats. (A) Cracks at abaxial side in ‘Harovinton’. (B–D) Dorsal side in ‘Williams’: (B) cracks involve single cells (arrows); (C) a crack occurs where surface deposits are missing; (D) cracks close to each other. (E) Crack at dorsal side in ‘Harosoy 63’, occurring where deposits are missing. (F) ‘Tachanagaha’: an example of severe damage in seed coat. Arrow pointing to anticlinal wall of palisade cell. (G–I) ‘OX 951’: (G) cracks in heavy deposits at dorsal side; (H) cracks near edge of deposits at dorsal side; (I) crack near hilum in surface deposits and into palisade walls. Scale bars: A, C and D = 50 µm; B and E–I = 10 µm.