CDC VR Morris


Denomination: 'CDC VR Morris'
Previously Proposed Denomination: 'BW423'
Botanical Name: Triticum aestivum
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Breeder: Pierre Hucl, University of Saskatchewan, Saskatoon, Saskatchewan
Agent in Canada: Crop Production Services (Canada) Inc.
P.O.Box 5234
High River, Alberta
T1V 1M4
Tel: 403-336-4826
Application Date: 2011-05-05
Application Number: 11-7285
Grant of Rights Date: 2013-11-01
Certificate Number: 4645
Grant of Rights Termination Date: 2031-11-01

Variety Description

Varieties used for comparison: 'Unity VB', 'CDC Kernen' and 'AC Barrie'

Summary: The frequency of plants with recurved flag leaves is absent or very low in 'BW423' whereas it is low in the reference varieties. The spikes of 'BW423' have awnlets whereas the spikes of 'Unity VB' and 'CDC Kernen' have awns. The spikes of 'BW423' are shorter than those of the reference varieties. The beak of the lowest lemma of 'BW423' is slightly curved whereas it is moderately curved on 'Unity VB' and straight on 'CDC Kernen' and 'AC Barrie'.


PLANT: common hard red spring type, erect growth habit at 5-9 tiller stage, matures mid-season
SEEDLING (at four leaf stage): absent or very weak intensity of anthocyanin colouration of coleoptiles, glabrous lower leaf sheath and blade

FLAG LEAF (at booting): absent or very low frequency of plants with recurved flag leaves, no anthocyanin colouration on auricles, medium to strong glaucosity of sheath, glabrous blade and sheath

SPIKE: weak to medium glaucosity, parallel sided, dense, awnlets present
SPIKE AT MATURITY: white, erect attitude, very sparse hairiness of convex surface of apical rachis segment
CULM: weak to medium glaucosity, straight at maturity
STRAW: thin pith in cross section, no anthocyanin colouration at maturity

LOWER GLUME: medium length and width, glabrous, sparse to medium extent of internal hair
LOWER GLUME SHOULDER: narrow and straight
LOWER GLUME BEAK: short, slightly curved
LOWEST LEMMA: slightly curved beak

KERNEL: medium red colour, small to medium size, medium length and width, oval shape, rounded cheek, short brush hairs, narrow width with shallow crease, dark colouration with phenol
GERM: medium size, round shape

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

Origin & Breeding History: 'BW423' was selected from the cross 'CDC Bounty'/'FHB9' made during the fall of 1999 at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan. The F1 was grown in the greenhouse during the winter of 1999/2000 with the F2 grown as bulk at Saskatoon in 2000 and the F3 bulked in a winter nursery. The F4 was grown as a space planted bulk at Saskatoon in 2001 and the F5 was grown in a rust nursery in 2002 in Saskatoon where selections were made based on rust reaction, plant type and straw strength. Seed from a single F5 spike was grown and evaluated in a rust nursery in 2003. 'BW423' was derived from a bulked F6 head-row. The F7 was grown in an unreplicated yield trial nursery at Saskatoon in 2004 and selected based on yield, height and straw strength. 'BW423' was evaluated as W05129 in local yield tests and in the 2006 Central Bread Wheat 'B' Test. From 2007 to 2009, 'BW423' was further evaluated in the Central Bread Wheat Cooperative Test.

Tests & Trials: Test and trials were conducted during the summers of 2010 and 2011 at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. Plots consisted of 5 rows with a row spacing of 23 cm and a row length of 3.6 meters. There were 4 replicates arranged in an RCB design. Measured characteristics were based on 20 measurements per variety per year.

Comparison table for 'CDC VR Morris' with reference varieties 'Unity VB', 'CDC Kernen' and 'AC Barrie'

Spike length (excluding awns)(cm)

  'CDC VR Morris' 'Unity VB' 'CDC Kernen' 'AC Barrie'
mean 2010 6.26 6.86 7.69 7.71
std. deviation 0.69 0.41 0.48 0.35
mean 2011 6.32 7.18 7.43 7.37
std. deviation 0.33 0.55 0.43 0.37

Click on image for larger view
CDC VR Morris
Wheat: 'BW423' (left) with reference varieties 'AC Barrie' (centre left), 'Unity VB' (centre right) and 'CDC Kernen' (BW881) (right)

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