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CDC Engage

Pea

Denomination: 'CDC Engage'
Previously Proposed Denomination: 'CDC 5947-4'
Botanical Name: Pisum sativum
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Canada
Breeder: Tom Warkentin, University of Saskatchewan, Saskatoon, Saskatchewan
Application Date: 2021-06-28
Provisional Protection:: 2021-06-28
Application Number: 21-10619

Variety Description

Varieties used for comparison: 'CDC Spectrum', 'CDC Boundless', 'CDC 5791' and 'CDC 5845'

Summary: The plants of 'CDC Engage' flower later than the plants of 'CDC Spectrum'. The pod curvature for 'CDC Engage' ranges between weak and weak to medium while it ranges between absent or very weak and very weak for 'CDC 5845', 'CDC Boundless' and 'CDC 5791'. The stem of 'CDC Engage' is longer than the stem of 'CDC Spectrum' and shorter than that of 'CDC 5791'. The 100 seed weight of 'CDC Engage' is less than the 100 seed weight of 'CDC 5791' and greater than that of 'CDC Boundless'.

Description:

PLANT: field type, no anthocyanin colouration, green foliage, flowers mid to late season

STEM: no anthocyanin colouration of axil, no fasciation, medium to long, medium number of nodes up to and including the first fertile node

LEAF: leaflets absent
STIPULE: medium length, medium to broad, medium length from axil to tip, short lobe below axil, medium to very dense flecking

FLOWER: maximum of two per node
STANDARD: white, medium width, moderately arched base, absent or very weak undulation
UPPER SEPAL: medium width, accuminate apex

POD: medium to long, medium width, entire parchment, ranging between weak and weak to medium curvature, light to medium green, medium number of ovules
IMMATURE SEED: light to medium green
SEED: ellipsoid, simple starch grains, yellow cotyledon, medium weight, matures mid-season
HILUM: same colour as testa

Origin & Breeding History: 'CDC Engage' (experimental designation CDC 5947-4) originated from a three way cross conducted at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. The initial cross between CDC 3760-15 and CDC 3760-20 was conducted in the fall of 2014 with a subsequent cross to CDC 4061-5 in the winter of 2015. The variety was developed from a single plant selection from the F2 population. The selection criteria for 'CDC Engage' included plant type, seed type, grain yield, days to maturity, vine length, resistance to lodging, seed weight, resistance to seed coat breakage and disease resistance. Twenty four F9 sub-lines were bulked to establish breeder seed in 2021.

Tests & Trials: The comparative tests and trials for 'CDC Engage' were conducted at the Sutherland Field Site of the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan during the 2021 and 2022 growing seasons. The trials were arranged in a RCB design consisting of 2 replications per variety. Each replicate consisted of 3 rows spaced 30 cm apart, with a row length of 3.66 metres and a planting density of 84 seeds per square metre. The measured characteristics were based on 20 measurements per variety per year except for 100 seed weight which was based on 8 measurements per variety per year. The mean differences were significant at the 5% confidence probability level based on LSD values.


Comparison tables for 'CDC Engage' with reference varieties 'CDC Spectrum', 'CDC Boundless', 'CDC 5791' and 'CDC 5845'

Days to flower (days from planting to when 30% of plants have at least one flower)

  'CDC Engage' 'CDC Spectrum' 'CDC Boundless' 'CDC 5791' 'CDC 5845'
mean (2021) 64.5 61.0 64.5 63.5 65.0
mean (2022) 62.5 60.5 63.0 62.5 63.0

Stem length (cm)

  'CDC Engage' 'CDC Spectrum' 'CDC Boundless' 'CDC 5791' 'CDC 5845'
mean (2021) (LSD=4.0) 48.0 42.4 49.5 53.4 47.5
std. deviation (2021) 4.5 5.8 5.1 3.3 6.1
mean (2022) (LSD=2.4) 70.0 63.0 69.0 74.7 71.4
std. deviation (2022) 3.3 5.0 6.1 5.1 5.6

Seed weight (grams per 100 seeds) (g)

  'CDC Engage' 'CDC Spectrum' 'CDC Boundless' 'CDC 5791' 'CDC 5845'
mean (2021) (LSD=0.62) 23.5 23.7 22.7 24.6 23.8
std. deviation (2021) 0.6 0.5 0.5 0.2 0.5
mean (2022) (LSD=0.12) 25.8 26.6 25.0 26.4 27.0
std. deviation (2022) 0.2 0.2 0.2 0.3 0.4

Click on image for larger view
CDC Engage
Pea: 'CDC Engage' (top left) with reference varieties 'CDC 5791' (top centre), 'CDC Boundless' (top right), 'CDC 5845 (bottom left) and 'CDC Spectrum' (bottom right)

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