CDC Jasper

Pea

Variety Description

Variety used for comparison: 'CDC Horizon'

Summary: The base of the flower standard of 'CDC Jasper' is moderately to strongly arched whereas that of 'CDC Horizon' is level to moderately arched. On average, the pods of 'CDC Jasper' have a greater number of ovules than the pods of ' CDC Horizon'. The 100 seed weight for 'CDC Jasper' is greater than that of 'CDC Horizon'.

Description:

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

TIME OF FLOWERING: mid-season
FLOWER: maximum of two per node
STANDARD: white, moderately to strongly arched base, absent or very weak undulation
UPPER SEPAL: medium width, acuminate apex

POD: entire parchment, blunt distal part, weak curvature, medium green, suture strings present
IMMATURE SEED: light green
SEED: simple starch grains, yellow cotyledons, matures mid to late season
HILUM: same colour as testa

Origin & Breeding History: 'CDC Jasper' (experimental designation '3548-2') originated from the cross ('JSO1205-14'/ '2427-2') / 'CDC Meadow' conducted in 2007 at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. It was developed from a single plant selection from the F2 population. 'CDC Jasper' was selected for its yield, days to maturity, days to flowering, vine length, resistance to lodging, seed weight, seed size, disease resistance and crude protein concentration.

Tests & Trials: The comparative tests and trials for 'CDC Jasper' were conducted at the Sutherland Field Site of the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan during the 2016 and 2017 growing seasons. The trials were established using a complete randomized block 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 65 seeds per square metre. The measured characteristics were based on 20 measurements per variety per year and there were 8 measurements taken for 100 seed weight. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison tables for 'CDC Jasper' with reference variety 'CDC Horizon'

Number of ovules per pod (count)

Seed weight (grams per 100 seeds)

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Pea: 'CDC Jasper' (left) with reference variety 'CDC Horizon' (right)