CDC Impulse


Denomination: 'CDC Impulse'
Previously Proposed Denomination: 'IBC479'
Botanical Name: Lens culinaris
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Breeder: Albert Vandenberg, University of Saskatchewan, Saskatoon, Saskatchewan
Application Date: 2014-05-02
Application Number: 14-8311
Grant of Rights Date: 2017-03-24
Certificate Number: 5452
Grant of Rights Termination Date: 2037-03-24

Variety Description

Varieties used for comparison: 'CDC Maxim', 'CDC Redberry' and 'CDC Dazil'

Summary: 'CDC Impulse' has more pairs of leaflets per leaf than the reference varieties. 'CDC Impulse' flowers earlier than 'CDC Dazil'. The plants of 'CDC Impulse' are taller than those of the reference varieties. At maturity, the pods of 'CDC Impulse' are longer than those of the reference varieties. The seed of 'CDC Impulse' has one colour whereas that of 'CDC Dazil' has two. 'CDC Impulse' is tolerant to imidazolinone herbicide whereas 'CDC Redberry' is not.


PLANT: late maturing

STEM: weak to medium intensity of anthocyanin colouration

LEAF: elliptic, rudimentary to prominent tendrils

FLOWER: flowers mid-season, medium to large size, white standard with light violet stripes, white wings

POD: mainly two ovules per pod, no anthocyanin colouration, yellow at maturity, truncate apex
DRY SEED: narrow width, elliptic profile in longitudinal cross-section, one colour of testa, grey testa, orange cotyledon, dull brown hilum

Origin & Breeding History: 'CDC Impulse' (experimental designation IBC479) was developed from the cross 2262-14 /// 2262-14 // 2262-14 / 'CDC Maxim' carried out in 2009 at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. Selections were made in the F1 to F4 generations, where 8 sub-lines were used to establish the breeder seed. Throughout the generations, selections were based on yield, seed weight, seed size (including diameter and plumpness), seed coat colour, cotyledon colour, days to flowering, days to maturity, resistance to lodging, plant height, herbicide tolerance and disease resistance. 'CDC Impulse' was entered in and evaluated as IBC479 in the Pulse and Special Crops Cooperative Registration Tests in 2011 and 2012.

Tests & Trials: The tests and trials for 'CDC Impulse' were conducted at the Crop Development Centre of the University of Saskatchewan, Saskatoon, Saskatchewan during the summers of 2014 and 2015. 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 95 seeds per square metre. Measured characteristics were based on 20 measurements per variety per year. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison tables for 'CDC Impulse' with reference varieties 'CDC Maxim', 'CDC Redberry' and 'CDC Dazil'

Number of pairs of leaflets per leaf

  'CDC Impulse' 'CDC Maxim' 'CDC Redberry' 'CDC Dazil'
mean 2014 6.7 5.9 4.6 6.0
std. deviation 2014 0.7 0.5 1.5 0.5
mean 2015 6.5 5.6 5.6 5.5
std. deviation 2015 0.5 0.6 0.8 0.8

Days to flowering

  'CDC Impulse' 'CDC Maxim' 'CDC Redberry' 'CDC Dazil'
mean 2014 51.5 55 55.5 55
mean 2015 60 58 61 63

Plant height (cm)

  'CDC Impulse' 'CDC Maxim' 'CDC Redberry' 'CDC Dazil'
mean 2014 46.1 40.1 42.0 38.0
std. deviation 2014 2.7 5.8 4.0 2.4
mean 2015 43.2 36.8 39.8 38.6
std. deviation 2015 2.0 1.9 4.1 2.3

Pod length at maturity (excluding beak) (cm)

  'CDC Impulse' 'CDC Maxim' 'CDC Redberry' 'CDC Dazil'
mean 2014 1.5 1.3 1.3 1.2
std. deviation 2014 0.1 0.07 0.07 0.07
mean 2015 1.5 1.3 1.3 1.3
std. deviation 2015 0.10 0.10 0.08 0.06

Click on image for larger view
CDC Impulse
Lentil: 'CDC Impulse' (left) with reference varieties 'CDC Maxim' (centre left), 'CDC Redberry' (centre right) and 'CDC Dazil' (right)

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