CDC KR-2

Lentil

Denomination: 'CDC KR-2'
Previously Proposed Denomination: 'IBC597'
Botanical Name: Lens culinaris
Applicant/Holder: University of Saskatchewan
Crop Development Centre
4D36 Agriculture Building, 51 Campus Drive
Saskatoon, Saskatchewan
S7N 5A8
Canada
Breeder: Albert Vandenberg, University of Saskatchewan, Saskatoon, Saskatchewan
Application Date: 2014-05-02
Application Number: 14-8314
Grant of Rights Date: 2017-03-24
Certificate Number: 5454
Grant of Rights Termination Date: 2037-03-24

Variety Description

Varieties used for comparison: 'CDC Maxim' and 'CDC KR-1'

Summary: The plants of 'CDC KR-2' are later flowering than those of 'CDC Maxim'. At maturity, the pods of 'CDC KR-2' are longer than those of 'CDC Maxim'. The plants of 'CDC KR-2' are tolerant to imidizolinone herbicide whereas those of 'CDC KR-1' are not.

Description:

PLANT: late maturing

STEM: weak intensity of anthocyanin colouration

LEAF: elliptic, rudimentary to prominent tendrils

FLOWER: flowers mid-season, large, 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 to medium width, elliptic to broad elliptic profile in longitudinal cross-section, one colour of testa, grey testa, orange cotyledon, dull brown hilum

Origin & Breeding History: 'CDC KR-2' (experimental designation IBC597) was developed from the cross 'CDC KR-1' /// 'CDC KR-1' // 'CDC KR-1' / 'CDC Maxim' conducted at the Crop Development Centre at the University of Saskatchewan, Saskatoon, Saskatchewan. Selections were made in the F1 to F4 generations, where 20 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 KR-2' was entered in and evaluated as 'IBC597' in the Pulse and Special Crops Cooperative Registration Tests in 2011 and 2012.

Tests & Trials: The tests and trials for 'CDC KR-2' 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 KR-2' with reference varieties 'CDC Maxim' and 'CDC KR-1'

Days to flowering

  'CDC KR-2' 'CDC Maxim' 'CDC KR-1'
mean 2014 58 55 57.5
mean 2015 60 58 60

Pod length at maturity (excluding beak) (cm)

  'CDC KR-2' 'CDC Maxim' 'CDC KR-1'
mean 2014 1.4 1.3 1.5
std. deviation 2014 0.1 0.1 0.1
mean 2015 1.5 1.3 1.5
std. deviation 2015 0.09 0.10 0.13

Click on image for larger view
CDC KR-2
Lentil: 'CDC KR-2' (left) with reference varieties 'CDC KR-1' (centre) and 'CDC Maxim' (right)

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