Fig. 10

10.1 In Elongated outer glume 1 (eog1) mutants, the glumes have been enlarged and display an awn that can be as long as the awn of the lemma in some mutant alleles. A. eog1.a to the left, Bowman to the right. B. Two spikelets of eog1.a (top) and one of Bowman (below). The glumes, subtending the spikelet with the lemma awn, are both wider and taller in the mutant. 10.2 Spikelets of Long glume awn 1 (Lga1.a) compared to Bowman (right). The dominant variant causes elongated glume awns, which are much longer than the kernel. 10.3 A. Spikes of barley Bracteatum-c (bra-c.1) compared to Bowman (right). The arrows indicate the third outer glume at the two lowest spikelets. The glume-like structure associated with the lowest spikelets are always the largest and they become progressively smaller toward the top of the spike. B. A close-up of the lower part of a spike of Third outer glume 1 (trd1.b) showing the pronounced glume-like structure at the base of the spike. 10.4 Short and long rachilla hairs in cultivar Morex (left) and Barke (right), respectively. Scale bar 1 mm. Image kindly provided by Twan Rutten, IPK Gatersleben