Denomination: 'PA3CN157'
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: 2015-06-23
Application Number: 15-8662
Grant of Rights Date: 2017-08-25
Certificate Number: 5532
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2019-08-25
Grant of Rights Termination Date: 2037-08-25

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: 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Summary: The cotyledon of 'PA3CN157' is narrower than that of 'PA1CN131' whereas the cotyledon and leaf of 'PA3CN157' are narrower and shorter than those of '5440'. The leaf margin of 'PA3CN157' is sharp whereas it is rounded for the reference varieties. 'PA3CN157' flowers earlier than 'PPS01-140 A-Line'. The petal of 'PA3CN157' is longer than 'PA1CN131' and it is shorter than '5440'. The petal of 'PA3CN157' is wider than those of 'PA1CN131' and 'PPS01-140 A-Line'. The silique attitude of 'PA3CN157' is horizontal whereas it is erect to semi-erect for 'PA1CN131'. The silique, beak and pedicel of 'PA3CN157' are longer than that of 'PA1CN131'. 'PA3CN157' has a longer beak than that of 'PPS01-140 A-Line'. The pedicel of 'PA3CN157' is shorter than that of '5440'. At maturity, the plant of 'PA3CN157' is shorter than those of the reference varieties. The seed coat of 'PA3CN157' is black whereas it is brown for 'PA1CN131'.


PLANT: male sterile inbred line, spring type, short to medium height at maturity

COTYLEDON: narrow, short to medium length

LEAF: medium green, few to medium number of lobes, sharp margin, medium density of medium depth margin dentations, very short to short, narrow, very short to short petiole

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

SILIQUE: horizontal attitude, short to medium length, medium length beak, very short to short pedicel
SEED COAT: black

AGRONOMIC CHARACTERISTICS: fair to medium resistance to lodging
QUALITY CHARACTERISTICS: no erucic acid, oil content is 45.9% of whole dried seed, protein is 43.6% of dried oil free meal, low glucosinolates (12.7 µmol/g)
DISEASE REACTION: moderately resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PA3CN157' is a male sterile line which contains the Ms8 gene construct in the heterozygous state. It was derived by crossing a pure selected line to a male sterile line used as the source of the bar and barnase genes. The pure selected line was crossed in 2011 at Bayer CropScience in Saskatoon, Saskatchewan, Canada. 'PA3CN157' was selected in 2012 on the basis of male sterility stability, expression of tolerance to glufosinate-ammonium herbicide and good combining ability with numerous restorer lines. Other selection parameters included vigour, maturity, blackleg resistance, clubroot tolerance, increased seed pod shatter tolerance, oil content, fatty acid profile and glucosinolate content.

Tests & Trials: The comparative trials conducted during the summers of 2014 and 2015 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 'PA3CN157' with reference varieties 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Cotyledon length (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.5) 10.4 11.3 9.6 13.9
std. deviation 1.4 0.9 1.7 1.1

Cotyledon width (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.9) 19.6 22.0 18.9 24.8
std. deviation 2.3 1.2 2.9 1.6

Leaf length (cm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.5) 17.2 16.2 17.6 20.5
std. deviation 3.0 1.3 1.8 2.8

Leaf width (cm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.6) 8.2 8.8 8.4 9.1
std. deviation 1.5 1.0 1.1 1.2

Petiole length (cm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.8) 7.2 6.3 8.3 9.5
std. deviation 2.4 1.0 1.7 2.6

Days to flower

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean 39 40 41 39

Flower petal length (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.0) 12.5 9.7 11.0 15.5
std. deviation 1.9 1.5 1.3 2.2

Flower petal width (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.7) 6.8 4.9 5.9 7.5
std. deviation 0.9 0.9 0.9 1.5

Silique length (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=3.4) 59.9 46.2 56.8 61.0
std. deviation 10.6 9.0 5.6 4.7

Beak length (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.2) 12.1 8.7 8.0 10.8
std. deviation 2.4 2.3 2.2 1.8

Pedicel length (mm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.5) 14.6 12.6 14.0 22.0
std. deviation 4 3.3 3.1 5.6

Plant height at maturity (cm)

  'PA3CN157' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=5.2) 113 120 125 127
std. deviation 12 11 10 11

Click on image for larger view
Canola: 'PA3CN157' (far left) with reference varieties 'PPS01-140 A-Line' (centre left), 'PA1CN131' (centre right) and '5440' (far right)

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