PR2CN521

Canola

Denomination: 'PR2CN521'
Botanical Name: Brassica napus
Applicant/Holder: Bayer CropScience Inc.
Site 600, R.R. #6
P.O. Box 117
Saskatoon, Saskatchewan
S7K 3J9
Canada
Breeder: Stewart Brandt, Bayer CropScience Inc., Saskatoon, Saskatchewan
Application Date: 2013-06-28
Application Number: 13-8079
Protective direction granted: 2013-06-28
Grant of Rights Date: 2015-06-23
Certificate Number: 5043
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 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.

Description:

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
SEED: black

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)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=1.2) 24.0 23.4 21.7 25.6
std. deviation 1.6 1.9 1.6 2.1

Leaf length (mm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=10.0) 249 192 230 255
std. deviation 9 15 14 11

Leaf width (mm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=4.6) 105 97 107 114
std. deviation 5 6 8 7

Days to flower

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean 42 39 42 40

Flower petal length (mm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=0.5) 13.7 15.1 14.8 14.7
std. deviation 0.5 0.7 0.5 0.5

Flower petal width (mm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=0.2) 5.3 5.7 5.5 6.3
std. deviation 0.3 0.3 0.2 0.2

Silique length (mm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=2.3) 61.7 67.7 77.5 64.5
std. deviation 4.3 4.8 3.0 3.5

Beak length (mm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=0.6) 12.7 13.8 12.8 11.3
std. deviation 0.5 0.5 0.6 0.9

Days to maturity

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean 95 92 92 92

Plant height (cm)

  'PR2CN521' 'PPS02-364' 'PPS98-274' '5440'
mean (LSD=2.9) 129 110 131 132
std. deviation 2 4 2 5

Click on image for larger view
PR2CN521
Canola: 'PR2CN521' (far left) with reference varieties 'PPS02-364' (centre left), 'PPS98-274' (centre right) and '5440' (far right)

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