CDC Hilose

Barley

Variety Description

Varieties used for comparison: 'CDC Rattan' and 'CDC McGwire'

Summary: 'CDC Hilose' has medium pubescence on the flag leaf blade while it is weak in 'CDC McGwire'. The flag leaf width of 'CDC Hilose' is wider than in 'CDC Rattan'. 'CDC Hilose' has medium to strong anthocyanin colouration of the nerves of the lemma of the kernel while it is weak to medium for 'CDC McGwire'. The spiculation of the inner lateral nerves of the dorsal side of the kernel of 'CDC Hilose' is absent or very weak while it is weak to medium for 'CDC Rattan'.

Description:

PLANT: two row, hulless, spring barley, semi-erect growth habit at tillering, absent or very sparse pubescence on the lower leaf sheaths, low to medium frequency of plants with recurved flag leaves

AURICLES: strong intensity of anthocyanin colouration, weak pubescence on the margins
FLAG LEAF SHEATH: medium to strong glaucosity, weak pubescence
FLAG LEAF: medium to strong pubescence on blade

SPIKE: mid-season emergence, weak to medium glaucosity, semi-erect attitude, platform shaped collar, parallel shape, medium to dense, divergent attitude of sterile spikelet, glume and awn of the median spikelet is equal in length to the grain
FIRST SEGMENT OF RACHIS: medium length, weak to medium curvature
LEMMA AWNS: strong anthocyanin colouration of the tips, longer than length of spike, rough spiculations on margins

KERNEL: strong intensity of anthocyanin colouration of nerves of the lemma at the end of anthesis, whitish aleurone layer, long rachilla hairs, absent or very weak spiculation of inner lateral nerves of dorsal side of lemma, very weak to weak hairiness of ventral furrow, clasping disposition of lodicules, transverse crease to incomplete horseshoe shape of basal markings, medium to long, medium to wide

AGRONOMY: fair to good resistance to lodging, good tolerance to straw breakage, fair to good tolerance to drought

Origin & Breeding History: 'CDC Hilose' (experimental designations HB08305, SH060882) originated from the cross 'SH99250' / 'CDC McGwire' made under glass at the Crop Development Centre (CDC) in 2001 using the pedigree breeding system. SH99250 is a two-row hulless barley breeding line that originated from the cross HB327 / SB94892. 'CDC McGwire' is a two-row hulless barley variety that originated from the cross TR311 / Wpg 8412-9-2-1. The F1 thru F4 generations were grown as bulk populations with the F1 and F3 generations being grown in winter nurseries in New Zealand. It was then grown and selected as a single F4 derived F5 hill plot in Saskatoon in 2004. The seed from the F5 hill plot was bulked as the line that became 'SH060882'. It was tested in CDC yield trials in 2005 to 2007 followed by testing in the Western Canadian Hulless Barley Cooperative Trials as 'HB08305' during the years 2008 and 2009. Selection criteria included high grain yield potential combined with high amylose starch, high beta glucan and resistance to surface borne smuts and spot form net blotch.

Tests & Trials: Tests and Trials were conducted in 2010 and 2011 at the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan. Plots consisted of 5 rows with a row length of 3.66 meters and a row spacing of 0.2 meters. There were 2 replicates in 2010 and 3 replicates in 2011 arranged in a RCB design each year.

Comparison table for 'CDC Hilose' with reference varieties 'CDC Rattan' and 'CDC McGwire'

Flag leaf width (mm)

Click on image for larger view

Barley: 'CDC Hilose' (centre) with reference varieties 'CDC Rattan' (left) and 'CDC McGwire' (right)