AAC Lacombe


Denomination: 'AAC Lacombe'
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: 13-8030
Grant of Rights Date: 2014-11-26
Certificate Number: 4955
Grant of Rights Termination Date: 2032-11-26

Variety Description

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

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


PLANT: field type, no anthocyanin colouration, no stem fasciation, green colour at flowering, semi-leafless, late maturing

STEM: medium number of nodes up to and including first fertile node (ranging from 16 to 24 nodes with an average of 20)

STIPULE: sparse flecking

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

POD: absent or partial parchment, thickened wall absent, very weak curvature, 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 Lacombe' (experimental designation MP1899) 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, P0321-08, 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 MP1899 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 Lacombe' with reference varieties 'Reward' and 'AAC Barrhead'

Days to flowering

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

Maximum width of flower standard (cm)

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

Pod length (cm)

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

Stem length (cm)

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

Days to maturity

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

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

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

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