AAC Redwater


Denomination: 'AAC Redwater'
Previously Proposed Denomination: 'PT457'
Botanical Name: Triticum aestivum
Applicant/Holder: Agriculture & Agri-Food Canada, Winnipeg
Cereal Research Centre
195 Dafoe Road
Winnipeg, Manitoba
R3T 2M9
Breeder: Gavin Humphreys, 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: 2012-04-30
Application Number: 12-7603
Grant of Rights Date: 2015-05-14
Certificate Number: 5023
Grant of Rights Termination Date: 2035-05-14

Variety Description

Varieties used for comparison: 'Harvest', 'AC Splendor' and 'McKenzie'

Summary: 'AAC Redwater' is shorter than 'AC Splendor' and 'McKenzie'. The spikes of 'AAC Redwater' have awns present whereas 'Harvest' and 'AC Splendor' have awnlets present. The beak length of the lower glume of 'AAC Redwater' is medium to long whereas it is very short to short on 'Harvest', very short on 'AC Splendor' and short on 'McKenzie'.


PLANT: hard red spring type, semi-erect growth habit at the 5 to 9 tiller stage, heads emerge mid-season

SEEDLING: weak to medium intensity of anthocyanin colouration of coleoptile, glabrous lower leaf sheaths and blades

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

CULM NECK: medium glaucosity, straight
STRAW: thin pith in cross section, no anthocyanin colouration at maturity
SPIKE: medium glaucosity, parallel-sided shape in profile, medium density, white at maturity, erect attitude, very sparse to sparse hairiness of convex surface of apical rachis segment
AWNS: shorter than length of spike, white
LOWER GLUME: medium length, medium to wide, pubescent, medium extent of internal hair
LOWER GLUME SHOULDER: very broad, slightly sloping to straight
LOWER GLUME BEAK: medium to long, very slightly curved
LOWEST LEMMA: slightly curved beak shape

KERNEL: medium red, medium size, short to medium length, narrow to medium width, oval shape, angular cheek, medium to long brush hairs, narrow to medium width and medium depth of crease
GERM: medium size, broad elliptical in shape

Origin & Breeding History: 'AAC Redwater' (experimental designations 02B08-CE1C and PT457) was derived from a topcross of 'AC Intrepid' onto an F1 plant with the parentage, 'Harvest'/ 'McKenzie' conducted in 2002 at the Beaverlodge Research Station, Beaverlodge, Alberta. The F1 plants were grown in the greenhouse at the Cereal Research Centre during the winter of 2002-2003 with the F2 grown in plots at the Beaverlodge Research Station in 2003. Spikes were collected from the F2 plots and grown in the 2003-2004 Parkland Canada Western Red Spring off-season nursery in Palmerston North, New Zealand. Spikes were selected from F3 hill plots in Palmerston North and F4 families were grown in row plots in the 2004 F4 hybrid nursery near Beaverlodge. One F4 row gave rise to PT457 (designation 02B08-CE1) and was grown as an F5 row during the winter of 2004 in New Zealand. 02B08-CE1 was yield tested as an F6 line in 2005, spikes were collected and grown again as F7 rows in Leeston, New Zealand. The F7 row which became PT457 was named, 02B08-CE1, and was yield tested under that designation in 2006. This line was subsequently evaluated in the 2007 Parkland "A" and the 2008 Central Bread Wheat "A2" tests. 02B08-CE1 was given the designation PT457 and was evaluated from 2009-2011 in the Parkland Cooperative Test.

Tests & Trials: Tests and trials for 'AAC Redwater' were conducted at Agriculture and Agri-Food Canada's plots located at the Manitoba Crop Development Centre in Portage la Prairie, Manitoba, during the summers of 2011 and 2013. The size of the plots was 3.72 square metres and consisted of 5 experimental rows with 2 winter wheat guard/border rows. Each row was 4.9 metres long and the rows were spaced 15.24 cm apart. The varieties were planted in 4 replications. Mean differences are significant at the 5% probability level based on a paired student's t-test.

Comparison table for 'AAC Redwater' with reference varieties 'Harvest', 'AC Splendor' and 'McKenzie'

Plant height (cm)

  'AAC Redwater' 'Harvest' 'AC Splendor' 'McKenzie'
mean 2011 101.0 99.4 103.1 105.3
std. deviation 2011 2.0 2.1 3.7 3.2
mean 2013 90.0 91.75 94.4 95.2
std. deviation 2013 2.6 3.7 4.5 3.8

Click on image for larger view
AAC Redwater
Wheat: 'AAC Redwater' (top left) with reference varieties 'McKenzie' (top right), 'AC Splendor' (bottom left) and 'Harvest' (bottom right)

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