AAC Barrhead


Denomination: 'AAC Barrhead'
Botanical Name: Pisum sativum
Applicant/Holder: Agriculture & Agri-Food Canada, Lacombe
Lacombe Research Station
6000 C and E trail
Lacombe, Alberta
T4L 1W1
Breeder: Deng-jin Bing, Agriculture & Agri-Food Canada, Lacombe, Alberta
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: 2013-04-26
Application Number: 13-8029
Grant of Rights Date: 2014-11-26
Certificate Number: 4954
Grant of Rights Termination Date: 2032-11-26

Variety Description

Varieties used for comparison: 'Reward' and 'AAC Lacombe'

Summary: The density of flecking of the stipules of 'AAC Barrhead' is medium to dense whereas the density is sparse on 'AAC Lacombe'. 'AAC Barrhead' flowers earlier than both 'Reward' and 'AAC Lacombe'. The flower standard of 'AAC Barrhead' is narrower than that of 'AAC Lacombe'. The pods of 'AAC Barrhead' are longer than those of 'Reward'. The stem of 'AAC Barrhead' is shorter than that of 'AAC Lacombe'. 'AAC Barrhead' is earlier maturing than both 'Reward' and 'AAC Lacombe'.


PLANT: field type, no anthocyanin colouration, no stem fasciation, green colour at flowering, semi-leafless, matures mid-season

STEM: medium number of nodes up to and including first fertile node (ranging from 18 to 24 nodes with an average of 21)

STIPULE: medium to dense flecking

FLOWER: blooms mid to late season, three flowers per node, moderately arched to strongly arched, acute apex of upper sepal

POD: absent or partial parchment, thickened wall absent, weak curvature, light to medium green when fully swollen, 8 ovules, suture strings absent
IMMATURE SEED: medium green
DRY SEED: cylindrical shape, simple starch grain, wrinkling of cotyledon absent, yellow cotyledon, hilum same colour as testa

Origin & Breeding History: 'AAC Barrhead' (experimental designation MP1900) is the result of the cross 'CDC715S-4' / 'Reward' made in 2003 in the greenhouse at the Agriculture and Agri-Food Canada Research Station in Morden, Manitoba. The breeding method was pedigree selection in combination with single seed descent. In 2007, one line, P0321-11, was selected for its high yield potential. In 2008, it was evaluated in a replicated yield test and selected for early maturity, lodging resistance, seed quality and high seed yield. In 2009, it was observed and purified in a seed increase strip planted in the field in Lacombe, Alberta. It was evaluated as MP1900 at various locations throughout western Canada in the 2010-2011 Western Canada Field Pea Cooperative Registration Test B.

Tests & Trials: Tests and trials were conducted during the summers of 2012 and 2013 in Lacombe, Alberta. Plots were arranged in a RCB design with 4 replicates. The plot size was 5 metres by 1 metre with a 20 cm row spacing. The seeding rate was 85 germinating seeds per square metre. Measured characteristics were based on 20 measurements per plant per year.

Comparison tables for 'AAC Barrhead' with reference varieties 'Reward' and 'AAC Lacombe'

Days to flowering

  'AAC Barrhead' 'Reward' 'AAC Lacombe'
mean 57 59 59

Maximum width of flower standard (cm)

  'AAC Barrhead' 'Reward' 'AAC Lacombe'
mean 2.6 2.8 3.0
std. deviation 0.3 0.4 0.2

Pod length (cm)

  'AAC Barrhead' 'Reward' 'AAC Lacombe'
mean 7.5 7.0 7.8
std. deviation 0.6 0.5 0.8

Stem length (cm)

  'AAC Barrhead' 'Reward' 'AAC Lacombe'
mean 123 118 136
std. deviation 10 17 11

Days to maturity

  'AAC Barrhead' 'Reward' 'AAC Lacombe'
mean 103 105 105

Click on image for larger view
AAC Barrhead
Pea: 'AAC Barrhead' (left) with reference variety 'Reward' (right)

Click on image for larger view
AAC Barrhead
Pea: 'AAC Barrhead' (left) with reference variety 'Reward' (right)

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