Denomination: '5603HR'
Previously Proposed Denomination: 'BW388'
Botanical Name: Triticum aestivum
Applicant/Holder: Syngenta Canada, Inc.
105 Jefferson Street
Morden, Manitoba
R6M 0B8
Breeder: Francis Kirigwi, Syngenta Canada, Inc., Morden, Manitoba
Application Date: 2008-06-26
Application Number: 08-6392
Grant of Rights Date: 2010-02-17
Certificate Number: 3766
Grant of Rights Termination Date: 2028-02-17

Variety Description

Variety used for comparison: 'McKenzie'

Summary: '5603HR' heads and matures later than 'McKenzie'. The pith in cross-section of '5603HR' is thinner than in 'McKenzie'. '5603HR' has sparser hairiness of the convex surface of the apical rachis segment of the spike than 'McKenzie'.


PLANT: spring type, erect to semi-erect growth habit
SEEDLING: absent or very weak intensity of anthocyanin colouration of coleoptile, absent or very weak pubescence on lower leaf sheaths, absent or very weak pubescence on lower leaf blades

FLAG LEAF: very high frequency of plants with recurved/drooping flag leaves, glabrous blades and sheaths, absent or very weak anthocyanin colouration of auricles, very weak to weak glaucosity of sheath

CULM NECK: absent or very weak glaucosity, very weak to weak curvature
STRAW: thin pith in cross section, strong anthocyanin colouration at maturity

SPIKE: tapering to parallel sided shape, lax to medium density, incline attitude and white at maturity, absent or very weak glaucosity, white awns present, long to very long awns, very strong spreading awn attitude, sparse to medium hairiness of convex surface of apical segment
LOWER GLUME: medium to wide width, short to medium length, medium pubescence, straight to elevated shape of shoulder, medium shoulder width, straight beak, very short beak, sparse internal hairs
LEMMA: straight beak

KERNEL: hard red type, dark red colour, small to medium sized kernel, short to midlong, midwide to wide, oval shape, rounded cheek shape, short brush hairs, medium sized brush, midsize to large germ, round shape of germ, midwide to wide crease, shallow crease

AGRONOMY: good resistance to pre-harvest sprouting

DISEASE RESISTANCE: moderately resistant to moderately susceptible to Fusarium head blight (Fusarium graminearum Fusarium species), resistant to moderately resistant to Common bunt (Tilletia caries, Tilletia foetida), moderately susceptible to Loose smut (Ustilago tritici), resistant to Leaf rust (Puccinia triticina) and moderately resistant to Stem rust (Puccinia graminis f.sp. tritici)

Origin & Breeding History: '5603HR' (experimental designation BW388) orginated from a cross of 'McKenzie'//FHB5227/Lars made in Berthoud, Colorado in 1998. Individual head selections were made from an F2 population at a breeding nursery in Rosebank, Manitoba in 2000. Single seed descent was used to advance the selections through the F3 and F4 generations in the greenhouse. In the summer of 2001, F5 headrows were individually bulked from a selection at Rosebank, Manitoba. The individual bulks in the F6 generation were screened and selected from a 2 location observation nursery in Rosebank, Manitoba in 2002. One of the bulk selections was designated 98S2015-02 and tested at Syngenta Seeds Canada research plots in 2003 and 2004. It was tested in the Central Bread Wheat Co-op as BW388 during 2005, 2006 and 2007 seasons. Selection criteria included height, maturity, yield, quality characteristics and disease reaction.

Tests & Trials: Tests and trials were conducted during the summers of 2007 and 2008 in Rosebank, Manitoba. Plots consisted of 7 rows with a row length of 5 meters and a row spacing of 15 centimeters. There were 3 replicates arranged in a RCB design.

Comparison tables for '5603HR' with reference variety 'McKenzie'

Days to heading

  '5603HR' 'McKenzie'
2007 55.1 51.1
2008 55.8 52.2

Days to maturity

  '5603HR' 'McKenzie'
2007 88.1 84.8
2008 84.3 82.0

Click on image for larger view
Wheat: '5603HR' (right) with reference variety 'McKenzie' (left)

Click on image for larger view
Wheat: '5603HR' (left) with reference variety 'McKenzie' (right)

Click on image for larger view
Wheat: '5603HR' (right) with reference variety 'McKenzie' (left)

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