CDC 5791

Pea

Variety Description

Varieties used for comparison: 'CDC Inca', 'CDC Spectrum', 'CDC 5845' and 'CDC Engage'

Summary: The plants of 'CDC 5791' flower later than the plants of 'CDC Spectrum'. The pod curvature for 'CDC 5791' ranges between absent or very weak to very weak while it is weak to medium for 'CDC Spectrum' and ranging between weak and weak to medium for 'CDC Engage'. The stem of 'CDC 5791' is longer than those of the reference varieties. The 100 seed weight of 'CDC 5791' is greater than the 100 seed weight of 'CDC Inca' and 'CDC Engage'.

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 to medium length lobe below axil, medium to dense flecking

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

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

Origin & Breeding History: 'CDC 5791' (experimental designation CDC 5791-9) originated from a three way cross conducted in 2014 at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. The initial cross between 5450 and CDC 2950-19 was followed by a subsequent cross to CDC 2942-4. The variety was developed from a single plant selection from the F2 population. The selection criteria for 'CDC 5791' 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. Thirty eight F9 sub-lines were bulked to establish breeder seed in 2021.

Tests & Trials: The comparative tests and trials for 'CDC 5791' 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 5791' with reference varieties 'CDC Inca', 'CDC Spectrum', 'CDC 5845' and 'CDC Engage'

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

Stem length (at maturity including the first 2 nodes with 'scale' leaves) (cm)

Seed weight (grams per 100 seeds) (g)

Click on image for larger view

Pea: 'CDC 5791' (top left) with reference varieties 'CDC Engage' (top centre), 'CDC 5845' (top right), 'CDC Inca' (bottom left) and 'CDC Spectrum' (bottom right)