Denomination: 'PR1CN484'
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: 2013-06-28
Application Number: 13-8077
Protective direction granted: 2013-06-28
Grant of Rights Date: 2015-06-23
Certificate Number: 5041
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2017-06-23
Grant of Rights Termination Date: 2035-06-23

Variety Description

Varieties used for comparison: 'PPS02-364', 'PPS98-274' and '5440'

Summary: The leaf of 'PR1CN484' is shorter and narrower than that of '5440'. 'PR1CN484' flowers and matures later than the reference varieties. The petal of 'PR1CN484' is shorter than that of 'PPS02-364' and narrower than that of the reference varieties. The silique and pedicel of 'PR1CN484' are shorter than those of 'PPS98-274'. 'PR1CN484' has a shorter silique beak than 'PPS02-364'. At maturity, the plant of 'PR1CN484' is taller than that of the reference varieties.


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

COTYLEDON: medium width, medium to long

LEAF: medium green, medium number of lobes, undulating to rounded margin, medium density of medium depth margin dentations, medium to long, narrow to medium width, petiole length ranging between short to medium and long

FLOWER PETAL: yellow, medium length, narrow to medium width
SILIQUE: semi-erect to horizontal attitude, medium to long, medium length beak, medium to long pedicel
SEED: black

AGRONOMIC CHARACTERISTICS: medium resistance to lodging
QUALITY CHARACTERISTICS: no erucic acid, oil content is 47.4% of whole dried seed, protein is 46.2% of dried oil free meal, low glucosinolates (13.6 µmol/g)
CHEMICAL REACTION: resistant to glufosinate ammonium herbicides
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PR1CN484' is a restorer line in the process of F1 hybrid production. It was derived as a doubled haploid line containing the Rf3 gene construct in homozygous state. The cross was made in Canada in 2006 with the doubled haploid line being extracted in 2008. 'PR1CN484' was selected in 2011 on the basis of fertility restoration of numerous male sterile lines and expression of tolerance to glufosinate-ammonium herbicide. Other selection parameters included height, vigour, maturity, blackleg resistance, oil content, fatty acid profile, glucosinolate content and combining ability.

Tests & Trials: Trials conducted in the summers of 2012 and 2013 in Saskatoon, Saskatchewan were set up in a RCB Design with 3 replications per variety. Plots each year consisted of 3 rows 6 metres in length with a spacing of 25 cm between rows and 50 cm between plots. There were 30 measurements of the cotyledon, leaf, flower and plant height characteristics and 60 measurements of the silique characteristics. Means are based on a two year average. Differences are significant at the 2% probability level based on LSD values.

Comparison tables for 'PR1CN484' with reference varieties 'PPS02-364', 'PPS98-274' and '5440'

Leaf length (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=10.0) 228 192 230 255
std. deviation 9 15 14 11

Leaf width (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=4.6) 97 97 107 114
std. deviation 5 6 8 7

Days to flower

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean 45 39 42 40

Flower petal length (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=0.5) 14.2 15.1 14.8 14.7
std. deviation 0.2 0.7 0.5 0.5

Flower petal width (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=0.2) 5.1 5.7 5.5 6.3
std. deviation 0.3 0.3 0.2 0.2

Silique length (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=2.3) 65.8 67.7 77.5 64.5
std. deviation 2.8 4.8 3.0 3.5

Beak length (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=0.6) 12.0 13.8 12.8 11.3
std. deviation 0.3 0.5 0.6 0.9

Pedicel length (mm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=1.9) 28.8 29.7 33.4 29.2
std. deviation 2.4 3.4 2.1 4.4

Days to maturity

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean 97 92 92 92

Plant height (cm)

  'PR1CN484' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=2.9) 141 110 131 132
std. deviation 4 4 2 5

Click on image for larger view
Canola: 'PR1CN484' (far left) with reference varieties 'PPS02-364' (centre left), 'PPS98-274' (centre right) and '5440' (far right)

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