Narrative
Awns on both central and lateral spikelets are reduced to 1/4 or less of normal length in six-rowed cultivars. Only the central spikelets exhibit reduced awn length in two-rowed cultivars. The rachilla is often modified, and in extreme cases the rachilla may develop as an malformed additional floret. Awns are thin and brittle. Inheritance: Monofactorial recessive. Located chromosome 4HL, about 6.9 cM distal from the Kap (hooded lemma) locus. Previous nomenclature and gene symbolization: Short awn 5=lk5. Breviaristatum-2=ari-2. Breviaristatum-c=ari-c.2. Mutational events: lks5.f in CIho 5641; lks5.g (Kmut 218) in Ashai 5 (OUJ509); ari-c.2, -c.59 in Bonus (PI 189763), -c.103 in Foma (CIho 11333); ari-c.106 in Foma; ari-c.109, -c.110, -c.111, -c.112, -c.120, -c.139, -c.157, -c.159, -c.179, -c.180, -c.199, -c.201, -c.203, -c.204, -c.206, -c.210, -c.229 in Foma, -c.259, -c.262, -c.272, -c.276, -c.289, in two-rowed Glacier and a mutant in Morex (CIho 15773), have been reported. Mutant used for description and seed stocks: lks5.f in CI5641 (GSHO 1297); ari-c.2 in Bonus (GSHO 1651); lks5.f in Bowman (PI 483237)*6 (GSHO 2014); ari-c.2 in Bowman*7 (GSHO 2013).