PR4CN586

Canola

Denomination: 'PR4CN586'
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: 2015-06-23
Application Number: 15-8672

Variety Description

Varieties used for comparison: 'PPS02-364', 'PPS04-205' and '5440'

Summary: The cotyledon of 'PR4CN586' is narrower than that of '5440'. 'PR4CN586' flowers later than 'PPS02-364'. The petal of 'PR4CN586' is shorter than that of 'PPS02-364' and it is narrower than the reference varieties. The silique of 'PR4CN586' is shorter than that of 'PPS02-364' and it is longer than that of 'PPS04-205'. 'PR4CN586' has a longer beak than that of 'PPS04-205' and '5440'. The pedicel of 'PR4CN586' is shorter than that of '5440'. At maturity, the plant of 'PR4CN586' is shorter than that of '5440'.

Description:

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

COTYLEDON: narrow to medium width, medium length

LEAF: medium green, few to medium number of lobes, rounded margin, medium density of medium depth margin dentations, short to medium length, narrow to medium width, short to medium length petiole

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

SILIQUE: horizontal attitude, short to medium length, medium to long beak, short pedicel
SEED COAT: black

AGRONOMIC CHARACTERISTICS: medium to good resistance to lodging
QUALITY CHARACTERISTICS: erucic acid is 0.01 % of total fatty acids, oil content is 47.8% of whole dried seed, protein is 39.0% of dried oil free meal, low glucosinolates (11.2 µmol/g)
CHEMICAL REACTION: resistant to glufosinate ammonium herbicides
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PR4CN586' 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 at Bayer CropScience in Saskatoon, Saskatchewan, Canada in 2011 with the doubled haploid line being extracted in 2011. 'PR4CN586' was selected in 2014 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: The comparative trials conducted during the summers of 2014 and 2015 in Saskatoon, Saskatchewan were set up in a RCB Design with 3 replications per variety. Each year, the plots consisted of 3 rows that were 6 metres in length with a spacing of 25 cm between rows and 50 cm between plots. The measured characteristics were based on 30 measurements of the cotyledon, leaf, flower and plant height and 60 measurements of the silique. The means were based on a two year average. Mean differences were significant at the 2% probability level based on LSD values.


Comparison tables for 'PR4CN586' with reference varieties 'PPS02-364', 'PPS04-205' and '5440'

Cotyledon width (mm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=0.9) 22.4 21.5 20.9 24.9
std. deviation 2.6 1.5 1.3 2.2

Days to flower

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean 40 38 41 39

Flower petal length (mm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=0.8) 14.0 15.2 13.1 14.9
std. deviation 2.0 2.1 1.0 1.6

Flower petal width (mm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=0.5) 5.5 6.4 6.8 6.8
std. deviation 1.0 1.1 0.7 1.0

Silique length (mm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=3.5) 59.4 64.6 56.5 60.2
std. deviation 8.1 6.7 7.2 8.6

Beak length (mm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=1.0) 14.3 13.7 11.2 11.1
std. deviation 2.6 2.2 1.5 2.1

Pedicel length (mm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=2.8) 18.0 19.2 19.9 22.1
std. deviation 3.2 3.9 5.7 5.8

Plant height at maturity (cm)

  'PR4CN586' 'PPS02-364' 'PPS04-205' '5440'
mean (LSD=6.7) 120 120 124 133
std. deviation 11 13 12 12

Click on image for larger view
PR4CN586
Canola: 'PR4CN586' (far left) with reference varieties 'PPS04-205' (centre left), 'PPS02-364' (centre right) and '5440' (far right)

Date modified: