Denomination: 'Minnedosa'
Previously Proposed Denomination: 'GP018'
Botanical Name: Triticum aestivum
Applicant/Holder: Agriculture & Agri-Food Canada, Winnipeg
Cereal Research Centre
195 Dafoe Road
Winnipeg, Manitoba
R3T 2M9
Breeder: P. D. Brown, Agriculture & Agri-Food Canada, Winnipeg, Manitoba
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
6000 C&E Trail
Lacombe, Alberta
T4L 1W1
Tel: (403) 782-8126
Application Date: 2008-04-24
Application Number: 08-6305
Grant of Rights Date: 2010-05-21
Certificate Number: 3841
Date rights surrendered: 2013-07-05

Variety Description

Varieties used for comparison: 'AC Vista' and 'Snowhite 475'

Summary: 'Minnedosa' has taller plants, narrower flag leaves, and heads later than 'Snowhite 475'. 'Minnedosa' has weaker glaucosity of the neck and spike than 'Snowhite 475'. The width of the shoulder of the lower glume in 'Minnedosa' is narrower than that of 'Snowhite' 475. 'Minnedosa' has shorter spikes than the reference varieties. The shape of the shoulder of the lower glume is sloping to slighty sloping for 'Minnedosa' whereas it is straight for 'Snowhite 475'.


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

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

CULM NECK: weak to medium glaucosity, weak curvature
STRAW: very thin pith in cross section, no anthocyanin colouration at maturity

SPIKE: parallel sided shape, lax to medium density, incline attitude and white at maturity, weak to medium glaucosity, white awns present, medium to long awns, medium spreading awn attitude, sparse to medium hairiness of convex surface of apical segment
LOWER GLUME: narrow to medium width, long, sparse pubescence, sloping to slightly sloping shoulder, medium shoulder width, straight to slightly curved beak, medium length beak, sparse internal hairs
LEMMA: slightly curved beak

KERNEL: hard white type, white, medium sized kernel, medium to long, medium to wide, ovate shape, rounded to angular cheek shape, medium length brush hairs, medium to large sized brush, narrow to medium width crease, deep crease
GERM: medium to large, oval shape

Origin & Breeding History: 'Minnedosa' (experimental designation GP018) originated from a cross between 'AC Vista*3' and 'Lr18'. Made in 1997 at the Agriculture and Agri-Food Canada Cereal Reasearch Centre, Saskatchewan. The objective of this cross was to introduce new leaf rust resistance genes into various classes of Canadian wheat. Yield, disease and quality testing were conducted in multiple locations from 2000 to 2004. 'Minnedosa' was tested in the 2005 and 2006 Hard White Wheat Co-op and in the 2007 High Yield Wheat co-op tests.

Tests & Trials: Tests and trials for 'Minnedosa' were conducted during the summers of 2007 and 2008 in Portage la Prairie, Manitoba. Plots were 325 meters square with a seeding rate of 300 seeds per meter square. There were 4 replicates arranged in a RCB design with an unrandomized first replicate.

Comparison tables for 'Minnedosa' with reference varieties 'AC Vista' and 'Snowhite 475'

Flag leaf width (mm)

  'Minnedosa' 'AC Vista' 'Snowhite 475'
mean 13 13 15
std. deviation 1 1 1

Days to heading

  'Minnedosa' 'AC Vista' 'Snowhite 475'
mean 48.3 48.0 46.0

Height (stem plus spike, including awns)(cm)

  'Minnedosa' 'AC Vista' 'Snowhite 475'
mean 97.5 97.3 92.6
std. deviation 4 5 5

Spike length (excluding awns and awnlets)(cm)

  'Minnedosa' 'AC Vista' 'Snowhite 475'
mean 7.9 8.1 8.6
std. deviation 0.3 0.4 0.4

Click on image for larger view
Wheat: 'Minnedosa' (center) with reference varieties 'AC Vista' (left) and 'Snowhite 475' (right)

Click on image for larger view
Wheat: 'Minnedosa' (center) with reference varieties 'AC Vista' (left) and 'Snowhite 475' (right)

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