awn

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awn

any of the bristles growing from the spikelets of certain grasses, including cereals

awn

[ȯn]
(botany)
Any of the bristles at the ends of glumes or bracts on the spikelets of oats, barley, and some wheat and grasses. Also known as beard.
References in periodicals archive ?
Populations with high %C have fewer achenes per head ([r.sub.%C,N] = -0.75), a greater percentage of awned achenes ([r.sub.%C,%A] = 0.70), and the shift from awned to nonawned achenes occurring on longer, thinner achenes ([r.sub.%C,SAWN] = 0.76).
The first principal component accounts for 58% of the variation in morphology and is strongly positively correlated (r [greater than or equal to] 0.80) with the percentage of central achenes, the distance of maximal shape shift from the center of the head, length and narrowness of the most extreme central and peripheral achenes, and the length and narrowness of achenes where the shift from awned to nonawned achenes occurs.
Paul is an awned, white-chaffed, medium to late maturity semidwarf hard red winter wheat.
Genou is an awned, white-chaffed, medium maturity, solid-stem hard red winter wheat.
Protection is an awned, bronze-chaffed, early-maturing semidwarf hard red winter wheat.
ND 735 is an awned, medium-early maturing semidwarf hard spring wheat.
AR 839 is an awned, white-chaffed wheat similar in appearance to Pat but is approximately 5 cm shorter and 2 d earlier in maturity than Pat.
The head is fully awned, middense, and oblong to clavate in shape.
Hatcher is an awned, white-chaffed, medium maturity, semidwarf hard red winter wheat.