AAC Comfort


Denomination: 'AAC Comfort'
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: 2016-03-16
Application Number: 16-8833

Variety Description

Variety used for comparison: 'Cooper'

Summary: When thirty percent of the plants have one open flower, the plants of 'AAC Comfort' are taller than the plants of 'Cooper'. The pod of 'AAC Comfort' has fewer ovules than the pod of 'Cooper'. When the plants are fully mature and the seed is green and fully developed, the stem of 'AAC Comfort' is longer than the stem of 'Cooper'.


PLANT: field type, no anthocyanin colouration, green
STEM: no anthocyanin colouration of axil, no fasciation, many nodes up to and including first fertile node

LEAFLETS: absent

STIPULE: short to medium length from axil to tip, very short to medium length of lobe below axil, sparse to very sparse flecking

FLOWERING: begins mid to late season
FLOWER: maximum of two per node
STANDARD: white, straight shape of base, absent or very weak undulation
UPPER SEPAL: acute apex

POD: parchment absent, no thickened wall, blunt distal part, very weak curvature, green, suture strings present
IMMATURE SEED: light green
SEED: simple starch grains, green cotyledons, matures mid-season to late
HILUM: same colour as testa

AGRONOMIC: resistance to powdery mildew

Origin & Breeding History: 'AAC Comfort' (experimental designation 'P0511-06') resulted from a breeding program based at the Agriculture and Agri-Food Canada, Lacombe Research Centre, in Lacombe, Alberta. It originated from the cross 'Polstead' by 'Tamora' made in 2005 using pedigree selection in combination with single seed descent. 'AAC Comfort' was selected for its maturity, yield, resistance to lodging, seed shape, seed size, and green seed colour. In 2013-2014, 'AAC Comfort' was entered into the Western Canada Field Pea Cooperative Registration Test-A and evaluated at 22 location-years. Breeder seed was produced from the F10 generation.

Tests & Trials: The comparative trials of 'AAC Comfort' were conducted during 2015 and 2016 at Agriculture and Agri-Food Canada, Lacombe Research Centre, in Lacombe, Alberta. A four replicate, randomized complete block design was planted with each replication consisting of 1 row per variety. The rows were 5 metres long and the spacing between rows was 0.25 metres. The plot size was 5 square metres with a planting density of 85 plants per square metre. Unless otherwise indicated, the measurements were taken from 20 plants or parts of plants for each year of trial.

Comparison tables for 'AAC Comfort' with reference variety 'Cooper'

Plant height (when 30% of plants have one open flower) (cm)

  'AAC Comfort' 'Cooper'
2015 mean 69.5 61.5
2015 std. deviation 4.9 5.5
2016 mean 110.7 97.5
2016 std. deviation 7.0 5.0

Number of ovules per pod (count)

  'AAC Comfort' 'Cooper'
2015 mean 8.6 9.1
2015 std. deviation 0.7 08
2016 mean 8.0 8.6
2016 std. deviation 0.6 0.9

Stem length (when plants are fully mature and seeds are green and fully developed) (cm)

  'AAC Comfort' 'Cooper'
2015 mean 75.8 70.7
2015 std. deviation 6.5 8.7
2016 mean 96.5 87.1
2016 std. deviation 8.3 7.0

Click on image for larger view
AAC Comfort
Pea: 'AAC Comfort' (left) with reference variety 'Cooper' (centre)

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