CDC Sienna

Lentil

Variety Description

Varieties used for comparison: 'CDC Scarlet' and 'CDC Maxim'

Summary: The stem of ‘CDC Sienna' has a low intensity of anthocyanin colouration whereas that of ‘CDC Maxim' has a medium to high intensity of anthocyanin colouration. The plants of ‘CDC Sienna' flower later than those of ‘CDC Maxim'. The plants of ‘CDC Sienna' mature later than those of ‘CDC Scarlet'. At the dry seed stage, the seed weight of ‘CDC Sienna' is greater than that of ‘CDC Scarlet'. The seed profile in longitudinal cross section of ‘CDC Sienna' is broad elliptical whereas that of ‘CDC Scarlet' is elliptical. The plants of ‘CDC Sienna' are not tolerant to imidazolinone herbicides whereas the plants of ‘CDC Maxim' are tolerant to imidazolinone herbicides.

Description:

COTYLEDON: orange

PLANT: flowers early to mid-season, matures mid-season

STEM: ranges between low and low to medium intensity of anthocyanin colouration

LEAF: elliptic, medium length, medium width, medium number of pairs of leaflets at the first flowering node

FLOWER: medium size, white standard with weak violet stripes, violet stripes absent on wings

POD: mainly two ovules, yellow at maturity, medium length, truncate shaped apex
DRY SEED: ranges between very narrow to narrow and narrow, broad elliptic profile in longitudinal cross section, grey testa with no patterning, dull brown hilum

REACTION TO CHEMICALS: not tolerant to imidazolinone herbicides.

USE: human consumption

Origin & Breeding History: ‘CDC Sienna' (experimental designation 5929-1) originated from the cross between ‘3365-7' and ‘CDC Scarlet' conducted at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan in 2010. A single plant selection was made from the F2 generation with further selections made at the F3 generation based on yield, seed weight, seed size, seed colour, cotyledon colour, days to flower, days to maturity, lodging resistance, plant height and disease resistance. Breeder seed was established using 7 F12 sub-lines in 2024.

Tests & Trials: The comparative trials for ‘CDC Scarlet' were conducted at the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan during the 2024 and 2025 growing seasons. The trials consisted of 3 replicates arranged in a RCB design. Each replicate consisted of 3 rows spaced 30 cm apart, with a row length of 3.66 metres and a planting density of 94 seeds per square metre. Measured characteristics were based on 30 measurements per variety per year, except for seed weight which was on 12 measurements per variety per year. Mean differences were significant at the 5% probability level based on a Student's t-test. The herbicide tolerance was evaluated by spraying plants at the 6 to 8 node stage with 0, 1, 2 and 4 times the recommended application rates for two separate imidazolinone herbicide treatment types. The first herbicide treatment was Solo ADV (at rates of 20, 40, and 80 grams active ingredient per hectare) and the second herbicide treatment was a combination of Odyssey (at rates of 30, 60, and 120 grams active ingredient per hectare) with Merge (0.5%, 1.0%, and 2.0% volume by volume), respectively. The Canadian Weed Science Society 0-100 Rating Scale for Herbicide Efficacy and Crop Phytotoxicity was used to assess the plant injury. The plant injury ratings for herbicide tolerance traits were assessed visually at 16 and 23 days after treatment with plant chlorosis, stunting, and overall biomass being compared against untreated control plants.

Comparison tables for 'CDC Sienna' with reference varieties 'CDC Scarlet' and 'CDC Maxim'

Days to flowering (days from planting to when 50% of the plants have one open flower)

Days to maturity (days from planting to when 90% of the pods are golden brown)

Seed weight (grams per 100 seeds) (g)

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Lentil: ‘CDC Sienna' (left) with reference varieties ‘CDC Scarlet' (centre) and ‘CDC Maxim' (right)