CDC 6956
| Denomination: | 'CDC 6956' |
|---|---|
| Previously Proposed Denomination: | '6956-6' |
| Botanical Name: | Lens culinaris |
| Applicant/Holder: |
Saskatchewan Pulse Growers 207-116 Research Drive Saskatoon, Saskatchewan S7N 3R3 Canada |
| Breeder: |
Albert Vandenberg, University of Saskatchewan, Saskatoon, Saskatchewan |
| Application Date: | 2021-06-28 |
| Provisional Protection:: | 2021-06-28 |
| Application Number: | 21-10603 |
Variety Description
Varieties used for comparison: 'CDC Maxim' and 'CDC Simmie'
Summary: The anthocyanin colouration on the stem of 'CDC 6956' ranges between a weak to medium and medium intensity while the anthocyanin colouration on the stem of 'CDC Maxim' is of a strong intensity and that of 'CDC Simmie' ranges between a medium to strong and strong intensity. The plants of 'CDC 6956' flower later than those of 'CDC Maxim'. At flowering, the plants of 'CDC 6956' are taller than those of the reference varieties. The plants of 'CDC 6956' mature later than those of 'CDC Simmie'. The dry seed weight of 'CDC 6956' is greater than those of the reference varieties. The seed of 'CDC 6956' has a broad elliptical profile in longitudinal cross section while the seed of 'CDC Simmie' has an elliptical profile in longitudinal cross section.
Description:
COTYLEDON: orange
PLANT: flowers mid-season, matures mid-season
STEM: anthocyanin colouration ranging between weak to medium and medium intensity
LEAF: elliptic, medium length and width, medium number of pairs of leaflets
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: narrow, broad elliptic profile in longitudinal cross section, grey testa with no patterning, dull brown hilum
USE: human consumption
Origin & Breeding History: 'CDC 6956' (experimental designation 6956-6) originated from the cross between 5319-1 and IBC1122-1 conducted at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan in 2014. 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 which includes diameter and plumpness, seed coat colour, cotyledon colour, days to flower, days to maturity, lodging resistance, plant height and disease resistance. Seed from fifty F9 sub-lines was bulked to establish breeder seed in 2021.
Tests & Trials: The comparative trials for 'CDC 6956' were conducted at the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan in 2021 and 2022. The trials were conducted using 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 94 seeds per square metre. Measured characteristics were based on 20 measurements per variety per year except for seed weight which was based on a minimum of 8 measurements per variety per year. Mean differences were significant at the 5% probability level based on LSD values.
Comparison tables for 'CDC 6956' with reference varieties 'CDC Maxim' and 'CDC Simmie'
Days to flower (from planting to when 50% of the plants have one open flower)
| 'CDC 6956' | 'CDC Maxim' | 'CDC Simmie' | |
|---|---|---|---|
| mean (2021) | 62 | 60 | 60.5 |
| mean (2022) | 59 | 57 | 56 |
Plant height (from ground to tip of extended foliage) (cm)
| 'CDC 6956' | 'CDC Maxim' | 'CDC Simmie' | |
|---|---|---|---|
| mean (2021) (LSD=1.2) | 33.0 | 30.1 | 28.9 |
| std. deviation (2021) | 2.8 | 2.8 | 2.4 |
| mean (2022) (LSD=1.8) | 38.7 | 33.9 | 34.3 |
| std. deviation (2022) | 2.7 | 3.1 | 1.9 |
Days to maturity (from planting to when 90% of the pods are golden brown)
| 'CDC 6956' | 'CDC Maxim' | 'CDC Simmie' | |
|---|---|---|---|
| mean (2021) | 88.5 | 86.5 | 84 |
| mean (2022) | 98 | 97.5 | 96 |
Seed weight grams per100 seeds) (g)
| 'CDC 6956' | 'CDC Maxim' | 'CDC Simmie' | |
|---|---|---|---|
| mean (2021) (LSD=0.14) | 5.38 | 4.55 | 4.17 |
| std. deviation (2021) | 0.1 | 0.03 | 0.1 |
| mean (2022) (LSD=0.08) | 4.97 | 3.98 | 3.95 |
| std. deviation (2022) | 0.2 | 0.2 | 0.1 |
Click on image for larger view
Lentil: 'CDC 6956' (left) with reference varieties 'CDC Maxim' (centre) and 'CDC Simmie' (right)
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