PA4CN180

Canola

Denomination: 'PA4CN180'
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: 15-8663
Grant of Rights Date: 2017-08-25
Certificate Number: 5533
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2019-08-25
Grant of Rights Termination Date: 2037-08-25

Note: The applicant has requested an exemption from compulsory licensing to allow time to multiply and distribute propagating material of the variety. If the exemption is granted, it may be allowed for two years from the date rights are granted for the variety.


Variety Description

Varieties used for comparison: 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Summary: The cotyledon of 'PA4CN180' is narrower and shorter than that of '5440' and it is shorter than that of 'PA1CN131'. 'PA4CN180' has a shorter leaf than that of '5440'. 'PA4CN180' has a shorter petiole than those of 'PPS01-140 A-Line' and '5440'. The petal of 'PA4CN180' is larger than those of 'PA1CN131' and 'PPS01-140 A-Line'. The silique attitude of 'PA4CN180' is horizontal whereas it is erect to semi-erect for 'PA1CN131'. 'PA4CN180' has a longer silique than the reference varieties. The beak of 'PA4CN180' is longer than that of 'PPS01-140 A-Line' . The pedicel of 'PA4CN180' is longer than that of 'PPS01-140 A-Line' and it is shorter than that of '5440'. At maturity, the plant of 'PA4CN180' is taller than that of 'PA1CN131'. The seed coat of 'PA4CN180' is black whereas it is brown for 'PA1CN131'.

Description:

PLANT: male sterile inbred line, spring type, medium to tall at maturity

COTYLEDON: narrow to medium width, short to medium length

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

FLOWER PETAL: yellow, medium length and width

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

AGRONOMIC CHARACTERISTICS: medium to good resistance to lodging
QUALITY CHARACTERISTICS: no erucic acid, oil content is 43.8% of whole dried seed, protein is 42.7% of dried oil free meal, medium glucosinolates (16.3 µmol/g)
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PA4CN180' is a male sterile line which contains the Ms8 gene construct in the heterozygous state. It was derived by backcrossing a double haploid line to a male sterile line used as the source of the bar and barnase genes. The double haploid line was extracted from the F1 generation derived from a cross made in 2009 at Bayer CropScience in Saskatoon, Saskatchewan, Canada and was produced in 2010. 'PA4CN180' was selected in 2013 and 2014 on the basis of male sterility stability, expression of tolerance to glufosinate-ammonium herbicide and good combining ability with numerous restorer lines. Other selection parameters included height, vigour, maturity, blackleg resistance, oil content, fatty acid profile and glucosinolate content.

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 'PA4CN180' with reference varieties 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Cotyledon length (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.5) 9.7 11.3 9.6 13.9
std. deviation 1.3 0.9 1.7 1.1

Cotyledon width (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.9) 21.3 22.0 18.9 24.8
std. deviation 2.2 1.2 2.9 1.6

Leaf length (cm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.5) 16.8 16.2 17.6 20.5
std. deviation 2.2 1.3 1.8 2.8

Petiole length (cm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.8) 6.8 6.3 8.3 9.5
std. deviation 2.1 1.0 1.7 2.6

Flower petal length (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.0) 14.3 9.7 11.0 15.5
std. deviation 1.3 1.5 1.3 2.2

Flower petal width (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=0.7) 7.2 4.9 5.9 7.5
std. deviation 0.9 0.9 0.9 1.5

Silique length (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=3.4) 71.2 46.2 56.8 61.0
std. deviation 6.4 9.0 5.6 4.7

Beak length (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.2) 9.8 8.7 8.0 10.8
std. deviation 2.0 2.3 2.2 1.8

Pedicel length (mm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=1.5) 15.4 12.6 14.0 22.0
std. deviation 4.5 3.3 3.1 5.6

Plant height at maturity (cm)

  'PA4CN180' 'PA1CN131' 'PPS01-140 A-Line' '5440'
mean (LSD=5.2) 130 120 125 127
std. deviation 15 11 10 11

Click on image for larger view
PA4CN180
Canola: 'PA4CN180' (far left) with reference varieties 'PPS01-140 A-Line' (centre left), 'PA1CN131' (centre right) and '5440' (far right)

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