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Denomination: 'TR05671'
Botanical Name: Hordeum vulgare
Applicant/Holder: Alberta Agriculture and Irrigation
Crop Assurance and Rural Programming Branch
1st Floor, 7000-113 Street
Edmonton, Alberta
T6H 5T6
Breeder: James H. Helm, Alberta Agriculture and Rural Development, Lacombe, Alberta
Patricia Juskiw, Alberta Agriculture and Forestry, Lacombe, Alberta
Application Date: 2008-04-07
Application Number: 08-6282
Date Withdrawn: 2011-08-25

Variety Description

Variety used for comparison: 'AC Metcalfe'

Summary: 'TR05671' has strong intensity of anthocyanin colouration of auricles whereas it is medium for 'AC Metcalfe'. The spike attitude of 'TR05671' is horizontal whereas it is semi-erect for 'AC Metcalfe'. 'TR05671' has a longer first segment of the rachis than 'AC Metcalfe'. 'TR05671' has longer spikes than 'AC Metcalfe'.


PLANT: two row, spring malting barley, semi-erect juvenile growth habit, absent or very sparse pubescence on the sheaths of the lower leaves

FLAG LEAF: low frequency of plants with recurved flag leafs, absent or very weak pubescence
FLAG LEAF SHEATH: absent or very weak glaucosity, weak pubescence
AURICLES: strong anthocyanin colouration, sparse pubescence on the margins

SPIKE: mid-season spike emergence, platform shaped collar, weak anthocyanin colouration of the tips of the lemma awns, horizintal attitude, weak glaucosity, parallel shape, medium density, divergent attitude of sterile spikelet, the length of the glume and its awn of the median spikelet is shorter relative to the grain
FIRST SEGMENT OF RACHIS: medium length, absent or very weak curvature
LEMMA AWNS: longer relative to the spike, rough spiculations on margins

KERNEL: absent or very weak anthocyanin colouration of nerves of the lemma at beginning of ripening, whitish aleurone layer, husk present, long rachilla hair, no hairiness on ventral furrow, medium length, medium width

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

Origin & Breeding History: 'TR05671' (experimental designation H93174006) was developed at the Field Crop Development Center, Lacombe, Alberta using a modifed bulk pedigree system. It arose from the cross H92076F1/TR238 in 1993. The line H93174006 was selected from the F7 head rows and further selected to be grown in the yield trials from 2000 to 2007. Selection criteria included yield, test weight, 1000 kernel weight, lodging resistance, disease resistance, maturity and malting quality. It was further tested as TR05671 in the Western Two Row Barley Cooperative Test in 2005 and 2006.

Tests & Trials: Tests and trials were conducted during the summers of 2008 and 2009 in Lacombe, Alberta. Plots consisted of 8 rows with a row spacing of 0.14 meters and a row length of 2.5 meters. There were 3 replicates.

Comparison table for 'TR05671' with reference variety 'AC Metcalfe'

Spike length (cm)

  'TR05671' 'AC Metcalfe'
mean 2008 9.3 6.7
std. deviation 0.95 0.61
mean 2009 8.9 6.2
std. deviation 0.59 0.40

Click on image for larger view
Barley: 'TR05671' (left) with reference variety 'Metcalfe' (right)

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