Denomination: 'PR0CN445'
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: 2012-07-16
Application Number: 12-7679
Protective direction granted: 2012-07-16
Grant of Rights Date: 2014-05-27
Certificate Number: 4831
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2016-05-27
Date rights surrendered: 2015-02-11

Variety Description

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

Summary: The cotyledon of 'PR0CN445' is narrower than that of '5030'. 'PR0CN445' has more leaf lobes than 'PPS02-364'. The leaf of 'PR0CN445' has shallow to medium depth margins whereas the leaf of 'PPS98-274' has medium to deep margins. The leaf of 'PR0CN445' is longer than that of 'PPS02-364' and is shorter and narrower than that of '5030'. 'PR0CN445' has a longer petiole than 'PPS02-364' whereas the petiole is shorter than '5030'. 'PR0CN445' flowers later than 'PPS02-364'. The petal of 'PR0CN445' is shorter than that of the reference varieties and wider than that of 'PPS98-274' and 'PPS02-364'. The silique of 'PR0CN445' is shorter than that of the reference varieties. The pedicel of 'PR0CN445' is shorter than that of 'PPS98-274' and longer than that of 'PPS02-364' and '5030'. At maturity, the plant of 'PR0CN445' is taller than that of 'PPS02-364' and shorter than that of '5030'. 'PR0CN445' matures later than the reference varieties.


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

COTYLEDON: medium width, medium to long

LEAF: medium green, many to very many lobes, undulating margin, low to medium density of shallow to medium depth margin dentations, medium length and width, medium length petiole

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

SILIQUE: semi-erect to horizontal attitude, medium length, medium to long beak, medium to long pedicel

SEED: black

AGRONOMIC CHARACTERISTICS: fair resistance to lodging

QUALITY CHARACTERISTICS: erucic acid is 0.03% of total fatty acids, oil content is 46.0% of whole dried seed, protein is 50.1% of dried oil free meal, very low glucosinolates (10.6 µmol/g)
REACTION TO CHEMICAL: resistant to Glufosinate ammonium
DISEASE RESISTANCE: moderately resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PR0CN445’ is a restorer inbred line used in F1 hybrid production which contains the Rf3 gene construct in the homozygous state. It was produced in Canada in 2006 with the doubled haploid line being extracted in 2008. 'PR0CN445’ 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 conducted in the summers of 2011 and 2012 in Saskatoon, Saskatchewan were set up in a RCB Design with 3 replications per variety. Plots each year consisted of 3 rows with a row length of 6 metres and a row spacing of 50 cm. There were 40 measurements of the cotyledon characteristics, 30 measurements of the 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 'PR0CN445' with reference varieties 'PPS98-274', 'PPS02-364' and '5030'

Cotyledon width (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=1.4) 24.2 22.7 25.0 25.7
std. deviation 1.4 1.8 1.8 0.9

Leaf length (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=9.4) 229 238 203 259
std. deviation 20 20 17 10

Leaf width (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=4.3) 112 116 105 123
std. deviation 11 5 10 11

Petiole length (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=5.9) 121 118 94 138
std. deviation 11 7 9 13

Days to flowering

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean 44 42 40 42

Flower petal length (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=0.4) 14.2 15.3 14.5 14.9
std. deviation 0.1 0.4 0.5 0.6

Flower petal width (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=0.5) 5.8 5.1 5.1 6.0
std. deviation 0.3 0.2 0.3 0.5

Silique length (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=2.0) 62.7 71.3 66.3 67.5
std. deviation 4.5 2.3 3.9 2.0

Pedicel length (mm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=1.3) 28.8 29.6 25.9 27.6
std. deviation 1.0 1.0 0.7 1.2

Days to maturity

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean 95 91 92 92

Plant height (cm)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean (LSD=3.6) 117 124 106 132
std. deviation 2 2 6 2

Oil content (% in whole dried seed)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean 46.0 45.3 46.9 44.4

Protein content (% of dried oil free meal)

  'PR0CN445' 'PPS98-274' 'PPS02-364' '5030'
mean 50.1 49.0 49.9 48.9

Click on image for larger view
Canola: 'PR0CN445' (far left) with reference varieties 'PPS98-274' (centre left), 'PPS02-364' (centre right) and '5030' (far right)

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