Denomination: 'CDC NRG003'
Previously Proposed Denomination: 'GP003'
Botanical Name: Triticum aestivum
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Breeder: Curtis Pozniak, University of Saskatchewan, Crop Development Centre, Saskatoon, Saskatchewan
Agent in Canada: Canterra Seeds Ltd.
201-1475 Chevrier Boulevard
Winnipeg, Manitoba
R3T 1Y7
Tel: 204-988-9758
Application Date: 2009-05-12
Application Number: 09-6647
Grant of Rights Date: 2012-06-07
Certificate Number: 4318
Grant of Rights Termination Date: 2030-06-07

Variety Description

Varieties used for comparison: '5702PR', 'AC Vista' and 'AC Andrew'

Summary: Plants of 'CDC NRG003' have a semi-erect growth habit while it is erect in '5702PR' and 'AC Andrew'. The frequency of plants with recurved flag leaves of 'CDC NRG003' is medium to high while it is low to medium in 'AC Vista'. The flag leaf of 'CDC NRG003' has weak to medium anthocyanin colouration of auricles while it is absent or very weak in '5702PR' and 'AC Andrew'. Flag leaves of 'CDC NRG003' are wider than those of 'AC Vista' and narrower than those of 'AC Andrew'. Plants of 'CDC NRG003' are shorter in height than those of 'AC Andrew'. The spike attitude of 'CDC NRG003' is inclined while it is erect in all the reference varieties. The kernel colour of 'CDC NRG003' is white while it is dark red in '5702PR'. The kernel length of 'CDC NRG003' is medium to long while it is short in 'AC Andrew'.


PLANT: common spring wheat, matures mid-season, semi-erect growth habit, medium to high frequency of recurved flag leaves
SEEDLING (4-leaf stage): very weak intensity of anthocyanin colouration of the coleoptile, glabrous sheath and blade of the lower leaf

FLAG LEAF: weak to medium anthocyanin colouration of the auricles, weak to medium glaucosity of the sheath, glabrous sheath and blade

CULM/NECK: weak to medium glaucosity, straight at maturity

SPIKE: weak to medium glaucosity, parallel sided, dense, white at maturity, incline attitude at maturity, absent or very sparse hairiness of the convex surface of the apical rachis segment
AWNS: awnlets present, light brown at maturity
LOWER GLUME: medium width shoulder, straight shoulder shape, medium width and length, glabrous, short to medium length slightly curved beak, sparse to medium extent of internal hairs
LEMMA: straight beak

STRAW AT MATURITY: thin in cross section, no anthocyanin colouration

KERNEL: hard white, white, small to medium size, medium to long length, medium width, elliptical, angular cheek, short length brush hairs, medium sized oval germ, medium shallow to medium crease

AGRONOMY: fair to good resistance to shattering, resistant to Common Bunt (Tilletia caries, Tilletia foetida), moderately resistant to moderately susceptible to Leaf Rust (Puccinia triticina), and resistant to Stem Rust (Puccinia graminis f. sp. tritici).

Origin & Breeding History: 'CDC NRG003' (experimental designation 'GP003') was derived from the cross 'U97232' and '97W1191' made in 1999 at the Crop Development Center, University of Saskatchewan, Saskatoon, Saskatchewan. The F1 generation was grown at a contra-season nursery in New Zealand. F2 generation was grown in Saskatoon, Saskatchewan in an artificially inoculation leaf and stem rust nursery. Plants with suitable height, plant type, and resistance to prevalent races of leaf/stem rust were bulk threshed and increased in New Zealand. F4 generation were planted in an artificially inoculated leaf/stem rust nursery in Saskatoon, Saskatchewan where 250 plants were selected and bulk harvested. In 2002, plants from the F5 generation with suitable maturity, plant height and resistance to lodging were selected and evaluated for grain protein and gluten strength. One line, selected and designated as 'UC38-8023', was evaluated in replicated yield trials in various locations in 2003 and 2004. In 2005, 'UC38-8023' was evaluated in the High Yield B test, advanced and tested as 'HW605' in the Hard White Wheat Test in 2006. 'HW605' was evaluated as 'GP003' in the High Yield Wheat Co-op in 2007 and the General Purpose Wheat Co-op in 2008.

Tests & Trials: Tests and trials for 'CDC NRG003' (experimental designation 'GP003') were conducted during the summers of 2009 and 2010 at the Crop Science Field Laboratory of the University of Saskatchewan, Saskatoon, Saskatchewan. Trials consisted of two replicates including approximately 2200 plants. Plots consisted of 5 rows with a row length of 3.6 metres and a row spacing of 0.2 metre. Planting density was 250 plants per meter square.

Comparison tables for 'CDC NRG003' with reference varieties '5702PR', 'AC Vista' and 'AC Andrew'

Flag leaf width (mm)

  'CDC NRG003' '5702PR' 'AC Vista' 'AC Andrew'
mean 2009 10.1 9.6 9.4 12.0
standard deviation 0.9 0.6 1.1 0.9
mean 2010 14.4 14.5 13.1 15.8
standard deviation 0.6 0.7 0.8 1.1

Plant height at maturity (cm)

  'CDC NRG003' '5702PR' 'AC Vista' 'AC Andrew'
mean 2009 83 84 85 88
standard deviation 4 5 3 3
mean 2010 91 94 94 94
standard deviation 3 3 4 3

Click on image for larger view
Wheat: 'CDC NRG003' (GP003) (left) with reference varieties '5702PR' (centre left), 'AC Vista' (centre right), and 'AC Andrew' (right).

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