|Botanical Name:||Brassica napus|
Bayer CropScience Inc.
Site 600, R.R. #6
P.O. Box 117
Stewart Brandt, Bayer CropScience Inc., Saskatoon, Saskatchewan
|Protective direction granted:||2013-06-28|
|Grant of Rights Date:||2015-06-23|
|Exemption from compulsory licensing:||Yes|
|Expiry date for exemption from compulsory licensing:||2017-06-23|
|Grant of Rights Termination Date:||2035-06-23|
Varieties used for comparison: 'PPS02-364', 'PPS98-274' and '5440'
Summary: The cotyledon of 'PR2CN521' is wider than that of 'PPS98-274'. The leaf of 'PR2CN521' is longer and wider than that of 'PPS02-364' whereas it is narrower than that of '5440'. 'PR2CN521' flowers later than that of 'PPS02-364' and '5440'. The petal of 'PR2CN521' is shorter than that of the reference varieties whereas it is narrower than that of 'PPS02-364' and '5440'. The silique of 'PR2CN521' is shorter than that of 'PPS02-364' and 'PPS98-274'. 'PR2CN521' has a shorter silique beak than 'PPS02-364' whereas it is longer than '5440'. At maturity, the plant of 'PR2CN521' is shorter than that of 'PPS98-274' whereas it is taller than that of 'PPS02-364'. 'PR2CN521' is later maturing than the reference varieties.
PLANT: male fertile restorer inbred line, spring type, medium to tall at maturity
COTYLEDON: medium width, medium to long
LEAF: medium green, medium to many lobes, undulating to rounded margin, medium density of medium depth margin dentations, long, medium width, medium length petiole
FLOWER PETAL: yellow, medium length, narrow to medium width
SILIQUE: horizontal attitude, medium length, medium length beak, medium to long pedicel
AGRONOMIC CHARACTERISTICS: good resistance to lodging
QUALITY CHARACTERISTICS: no erucic acid, oil content is 46.4% of whole dried seed, protein is 45.5% of dried oil free meal, low glucosinolates (11.4 µmol/g)
CHEMICAL REACTION: resistant to glufosinate ammonium herbicides
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)
Origin & Breeding History: 'PR2CN521' 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 Saskatoon, Canada in 2007 with the doubled haploid line being extracted in 2009. 'PR2CN521' 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 'PR2CN521' with reference varieties 'PPS02-364', 'PPS98-274' and '5440'
Cotyledon width (mm)
Leaf length (mm)
Leaf width (mm)
Days to flower
Flower petal length (mm)
Flower petal width (mm)
Silique length (mm)
Beak length (mm)
Days to maturity
Plant height (cm)
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