Denomination: 'PR0CN456'
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: 2011-07-19
Application Number: 11-7338
Protective direction granted: 2011-07-19
Grant of Rights Date: 2013-06-21
Certificate Number: 4562
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2015-06-21
Date rights surrendered: 2015-02-11

Variety Description

Varieties used for comparison: 'PPS98-274', 'PPS02-364' and '5030'

Summary: 'PR0CN456' has fewer leaf lobes than 'PPS98-274' and '5030'. The silique of 'PR0CN456' is shorter than the reference varieties. 'PR0CN456' has a longer pedicel than 'PPS02-364' and '5030'. At maturity, the plant height of 'PR0CN456' is taller than 'PPS02-364'. 'PR0CN456' has a higher oil content as a percentage in whole dried seed than the reference varieties. The protein content as a percentage of dried oil free meal of 'PR0CN456' is lower than 'PPS98-274' and 'PPS02-364'.


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

COTYLEDON: medium to wide width, long

LEAF: medium green, very few to few lobes, undulating to rounded margin, very low to low density of very shallow to shallow dentations, medium to long length, wide, medium length petiole

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

AGRONOMIC CHARACTERISTICS: fair to good resistance to lodging

QUALITY CHARACTERISTICS: erucic acid is 0.02% of total fatty acids, oil content is 49.8% of whole dried seed, protein is 43.9% of dried oil free meal, very low glucosinolates (4.24 µmol/g)

DISEASE RESISTANCE: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam) and resistant to White Mold (Sclerotinia sclerotiorum)

Origin & Breeding History: 'PR0CN456' is a restorer line in the process of F1 hybrid production. It was derived as a doubled haploid line 08CN13-018 containing the Rf3 gene construct in homozygous state. The cross was made in 2007 with the doubled haploid line being extracted in 2008. 'PR0CN456' was selected in 2009 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 were conducted in the summers of 2010 and 2011 in Saskatoon, Saskatchewan. Plots each year consisted of 3 rows with a row length of 6 metres and a row spacing of 50cm. In 2010, the trial was set up as 8 x 9 lattice with 3 replications. In 2011, the trial was set up as a RCB Design with 3 replications. There were 40 measurements of the cotyledon characteristics, 30 of the leaf, flower and plant height characteristics and 60 for 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 'PR0CN456' with reference varieties 'PPS98-274', 'PPS02-364' and '5030'

Silique length (mm)

  'PR0CN456' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=4.2) 47.9 66.2 62.4 60.3
std. deviation 3.9 5.6 5.6 4.9

Pedicel length (mm)

  'PR0CN456' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=2.9) 23.3 21.3 16.8 18.9
std. deviation 3.1 2.5 2.5 2.7

Plant height at maturity (cm)

  'PR0CN456' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=7) 121 118 105 128
std. devaition 7 8 9 11

Oil content (% in whole dried seed)

  'PR0CN456' 'PPS98-274' 'PPS02-364' '5030'
mean 49.8 46.0 46.6 47.4

Protein content (% of dried oil free meal)

  'PR0CN456' 'PPS98-274' 'PPS02-364' '5030'
mean 43.9 49.2 47.9 45.7

Click on image for larger view
Canola: 'PR0CN456' (far left) with reference varieties 'PPS98-274' (centre left), 'PPS02-364' (centre right) and '5030' (far right)

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