Fig. 1

Morphological characterization of the bm5 mutants. a Greenhouse grown B73 wild-type maize. b Greenhouse grown bm5 mutant. c Adaxial view of the representative midrib of the fourth leaf collected from 60-day-old B73 wild-type maize. d Adaxial view of the representative midrib of the fourth leaf collected from 60-day-old bm5 mutant. e The fourth internode collected from 60-day-old B73 wild-type maize. f The fourth internode collected from 60-day-old bm5 mutant. g The midrib cross section from the fourth leaf collected from 60-day-old B73 wild-type maize without staining. Bar = 1.0 mm. h The midrib cross section from the fourth leaf collected from 60-day-old bm5 mutant. Bar = 1.0 mm. i Phloroglucinol–HCl staining of the midrib cross section from the fourth leaf collected from 60-day-old B73 wild-type maize. Bar = 1.0 mm. j Phloroglucinol–HCl staining of the midrib cross section from the fourth leaf collected from 60-day-old bm5 mutant