|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 'PR2CN523' is shorter than that of '5440'. The leaf of 'PR2CN523' is longer than that of 'PPS02-364' and 'PPS98-274' whereas it is wider than that of 'PPS02-364'. 'PR2CN523' flowers and matures later than the reference varieties. The petal of 'PR2CN523' is shorter than that of 'PPS02-364'. The silique of 'PR2CN523' is shorter than that of the reference varieties. 'PR2CN523' has a longer silique beak than '5440'. The pedicel of 'PR2CN523' is longer than that of 'PPS02-364' and '5440'. At maturity, the plant of 'PR2CN523' is taller than that of the reference varieties.
PLANT: male fertile restorer inbred line, spring type, tall to very tall at maturity
COTYLEDON: medium width and length
LEAF: medium green, many lobes, undulating margin, low to medium density of medium depth margin dentations, long, medium width, petiole length ranging between short to medium and long
FLOWER PETAL: yellow, medium length, narrow to medium width
SILIQUE: semi-erect attitude, medium length, medium to long beak, pedicel length ranging between medium and long to very long
AGRONOMIC CHARACTERISTICS: medium to good resistance to lodging
QUALITY CHARACTERISTICS: no erucic acid, oil content is 46.0% of whole dried seed, protein is 45.2% of dried oil free meal, low glucosinolates (11.5 µmol/g)
CHEMICAL REACTION: resistant to glufosinate ammonium herbicides
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)
Origin & Breeding History: 'PR2CN523' 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. 'PR2CN523' 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 'PR2CN523' with reference varieties 'PPS02-364', 'PPS98-274' and '5440'
Cotyledon length (mm)
Leaf length (mm)
Leaf width (mm)
Days to flower
Flower petal length (mm)
Silique length (mm)
Beak length (mm)
Pedicel length (mm)
Days to maturity
Plant height (cm)
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