Denomination: 'PB3CN261'
Botanical Name: Brassica napus
Applicant/Holder: Bayer CropScience Inc.
Site 600, R.R. #6
P.O. Box 117
Saskatoon, Saskatchewan
S7K 3J9
Breeder: Stewart Brandt, Bayer CropScience Inc., Saskatoon, Saskatchewan
Application Date: 2014-06-19
Application Number: 14-8365
Protective direction granted: 2014-06-19
Grant of Rights Date: 2016-05-25
Certificate Number: 5353
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2018-05-25
Grant of Rights Termination Date: 2036-05-25

Note: The applicant has requested an exemption from compulsory licensing to allow time to multiply and distribute propagating material of the variety. If the exemption is granted, it may be allowed for two years from the date rights are granted for the variety.

Variety Description

Varieties used for comparison: 'PB0CN216', 'PPS01-140 B-Line' and '5440'

Summary: The cotyledon of 'PB3CN261' is smaller than that of 'PB0CN216'. The leaf of 'PB3CN261' is longer than that of 'PPS01-140 B-Line' and it is wider than that of all the reference varieties. 'PB3CN261' flowers later than 'PPS01-140 B-Line' and '5440'. The petal of 'PB3CN261' is smaller than that of 'PB0CN216' whereas it is longer than that of 'PPS01-140 B-Line'. 'PB3CN261' has a shorter silique than 'PB0CN216' and '5440'. 'PB3CN261' has a longer silique beak than the reference varieties. The pedicel of 'PB3CN261' is longer than that of 'PB0CN216' and 'PPS01-140 B-Line'. The seed coat of 'PB3CN261' is brown whereas it is black for the reference varieties.


PLANT: male fertile inbred line, spring type, medium to tall at maturity

COTYLEDON: medium width and length

LEAF: medium green, medium to many lobes, undulating to rounded margin, medium density of medium depth margin dentations, short to medium length, medium width, short petiole

FLOWER PETAL: yellow, medium length, narrow to medium width

SILIQUE: semi-erect to horizontal attitude, short to medium length, medium to long beak, medium length pedicel
SEED COAT: brown

AGRONOMIC CHARACTERISTICS: good resistance to lodging
QUALITY CHARACTERISTICS: 0.01% erucic acid, oil content is 51.4% of whole dried seed, protein is 44.0% of dried oil free meal, very low glucosinolates (7.1 µmol/g)
CHEMICAL REACTION: susceptible to glufosinate ammonium herbicides
DISEASE REACTION: moderately resistant to resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PB3CN261' is the male fertile maintainer line of 'PA3CN161'. It is a non-transgenic double haploid line which was extracted in 2008 from the F1 generation of a cross produced in Saskatoon, Saskatchewan, Canada in 2007. 'PB3CN261' was selected in 2011 and 2012 for plant height, vigour, maturity, blackleg resistance, oil content, fatty acid profile and glucosinolate content.

Tests & Trials: The comparative trials conducted during the summers of 2013 and 2014 in Saskatoon, Saskatchewan were set up in a RCB Design with 3 replications per variety. Each year, the plots consisted of 3 rows that were 6 metres in length with a spacing of 25 cm between rows and 50 cm between plots. The measured characteristics were based on 30 measurements of the cotyledon, leaf, flower and plant height and 60 measurements of the silique. The means were based on a two year average. Mean differences were significant at the 2% probability level based on LSD values.

Comparison tables for 'PB3CN261' with reference varieties 'PB0CN216', 'PPS01-140 B-Line' and '5440'

Cotyledon length (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=2.1) 12.9 15.2 12.6 13.9
std. deviation 1.0 1.2 1.0 1.3

Cotyledon width (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=2.7) 23.1 27.2 23.1 25.7
std. deviation 1.6 2.0 1.8 1.7

Leaf length (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=11) 211 210 195 216
std. deviation 16 13 16 12

Leaf width (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=6) 109 101 94 95
std. deviation 7 7 7 5

Days to flower

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean 42 43 40 40

Flower petal length (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=0.7) 14.1 15.4 12.6 13.8
std. deviation 0.8 0.6 0.8 0.6

Flower petal width (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=0.4) 6.3 7.5 6.1 6.0
std. deviation 0.5 0.5 0.5 0.6

Silique length (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=2.5) 58.4 74.8 59.7 64.4
std. deviation 2.6 3.3 3.5 4.1

Beak length (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=1.2) 14.3 12.8 7.0 11.9
std. deviation 0.8 1.6 1.3 0.9

Pedicel length (mm)

  'PB3CN261' 'PB0CN216' 'PPS01-140 B-Line' '5440'
mean (LSD=1.6) 24.1 20.5 18.6 24.0
std. deviation 2.9 3.1 2.7 5.3

Click on image for larger view
Canola: 'PB3CN261' (far left) with reference varieties 'PPS01-140 B-Line' (centre left), 'PB0CN216' (centre right) and '5440' (far right)

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