CDC Blazer


Denomination: 'CDC Blazer'
Previously Proposed Denomination: '3012-1LT'
Botanical Name: Pisum sativum
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Breeder: Tom Warkentin, University of Saskatchewan, Saskatoon, Saskatchewan
Application Date: 2015-07-21
Application Number: 15-8690

Variety Description

Variety used for comparison: 'CDC Rocket'

Summary: The density of flecking of the stipule is very sparse for 'CDC Blazer' whereas the density of flecking is medium for 'CDC Rocket'. The apex of the upper sepal of the flower is accuminate for 'CDC Blazer' whereas the apex of the upper sepal of the flower of 'CDC Rocket' is acute. The pod of 'CDC Blazer' is smaller than the pod of 'CDC Rocket'. When the plants are fully mature and the seed is green and fully developed, the stem of 'CDC Blazer' is longer than the stem of 'CDC Rocket'. The colour of the testa is brownish green for 'CDC Blazer' whereas the testa is reddish brown for 'CDC Rocket'. The seed weight for 'CDC Blazer' is less than the seed weight for 'CDC Rocket'.


PLANT: field type, anthocyanin colouration present, green
STEM: single ring of anthocyanin colouration of axil, no fasciation, medium number of nodes up to and including first fertile node

LEAFLETS: absent
STIPULE: short from axil to tip, short lobe below axil, very sparse flecking

FLOWERING: begins mid-season
FLOWER: maximum of two per node
WING: reddish purple
STANDARD: straight to moderately arched base, absent or very weak undulation
UPPER SEPAL: medium to broad, accuminate apex

POD: entire parchment, no thickened wall, blunt distal part, absent or very weak curvature, green, suture strings present
IMMATURE SEED: light to medium green
SEED: cylindrical shape, simple starch grains, no wrinkling of cotyledons, yellow cotyledons, matures mid-season
TESTA: marbling present, no violet or pink spots, brownish green
HILUM: darker than testa

Origin & Breeding History: 'CDC Blazer' (experimental designation 3012-1LT) resulted from a breeding program based at the Crop Development Centre, University of Saskatchewan, in Saskatoon, Saskatchewan. It originated from the cross 'CDC Meadow' / '1819-2' made in 2005. From the F2 population of this cross, 'CDC Blazer' was selected for its yield, days to seed maturity, days to flowering, vine length, resistance to lodging, seed weight, seed coat colour, and disease resistance.

Tests & Trials: The comparative trials of 'CDC Blazer' were conducted during 2015 and 2016 at the Sutherland Research Farm of the University of Saskatchewan, in Saskatoon, Saskatchewan. A two replicate, randomized complete block design was planted with each replication consisting of 3 rows per variety. The rows were 3.66 metres long and the spacing between rows was 0.30 metres. The plot size was 3.35 square metres with a planting density of 65 plants per square metre. Unless otherwise indicted, the measurements were taken from 20 plants or parts of plants for each year of trial.

Comparison tables for 'CDC Blazer' with reference variety 'CDC Rocket'

Pod length (cm)

  'CDC Blazer' 'CDC Rocket'
2015 mean 6.1 6.8
2015 std. deviation 0.5 0.6
2016 mean 6.2 6.9
2016 std. deviation 0.5 0.5

Pod width (cm)

  'CDC Blazer' 'CDC Rocket'
2015 mean 1.1 1.2
2015 std. deviation 0.1 0.1
2016 mean 1.2 1.3
2016 std. deviation 0.1 0.1

Stem length (fully mature plants when seed is green and fully developed) (cm)

  'CDC Blazer' 'CDC Rocket'
2015 mean 68.2 59.9
2015 std. deviation 6.2 5.2
2016 mean 100.0 90.0
2016 std. deviation 10.3 11.9

Seed weight (g/100 seeds)

  'CDC Blazer' 'CDC Rocket'
2015 mean 19.2 21.3
2015 std. deviation 0.2 0.7
2015 number measured 4 4
2016 mean 16.1 17.7
2016 std. deviation 0.2 0.5
2016 number measured 8 8

Click on image for larger view
CDC Blazer
Pea: 'CDC Blazer' (left) with reference variety 'CDC Rocket' (right)

Click on image for larger view
CDC Blazer
Pea: 'CDC Blazer' (left) with reference variety 'CDC Rocket' (right)

Click on image for larger view
CDC Blazer
Pea: 'CDC Blazer' (left) with reference variety 'CDC Rocket' (right)

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