Figure 9

Morphology of anthocyanin-accumulating cells in maize floral organs. The maize male inflorescence, the tassel, is a panicle made of numerous spikes, each formed by numerous, paired spikelets. (A) Single spike with paired spikelets. The spikelet has outer and inner glumes (bracts of the florets) and each floret has a lemma, a palea, a highly reduced lodigule and 3 stamens (B) Spikelet dissection: the two florets with an outer glume, an inner glume; each floret with a lemma, palea, highly reduced lodigule and three stamens. (C) Digital macro images of open florets from a C2-Idf (chalcone synthase) mutant that accumulates no anthocyanins. (D) DIC light micrographs of the lemma from male flowers of C2-Idf plant (E). Digital macro images of open florets from a B-I Pl plant. (F) DIC light micrographs of the lemma from male flowers of a B-I Pl plant. The bar represents 10 μm