Fig. 36

Transversally striped barley mutants. The stripes correspond to tissues elongated during the light/dark cycles of the day. A. Mutant Zebra stripe 1 (zeb1.a) grown in the field. B. Segregating seedlings of a Tigrina mutant (tig-a.6) grown under light/dark cycles. The green parts correspond to leaf segments elongated in the light, while pale necrotic bands correspond to segments elongated during the dark. When segments developed during the dark phase are illuminated during the light phase they degrade