PA1CN183

Canola

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 'PA1CN183' is shorter and narrower than that of '5440'. The leaf of 'PA1CN183' is shorter than that of '5440'. The petiole of 'PA1CN183' is shorter than those of 'PPS01-140 A-Line' and '5440'. The petal of 'PA1CN183' is shorter and narrower than that '5440'. 'PA1CN183' has a shorter silique and pedicel than '5440'. The silique beak of 'PA1CN183' is longer than that of 'PPS01-140 A-Line'. The plants of 'PA1CN183' mature later than those of 'PPS01-140 A-Line' and '5440'. At maturity, the plants of 'PA1CN183' are shorter than the plants of '5440'. The seed coat of 'PA1CN183' is brown whereas it is black for 'PPS01-140 A-Line' and '5440'. Based on the root symptoms observed, 'PA1CN183' is resistant to Clubroot (Plasmodiophora brassicae) whereas the reference varieties are highly susceptible.

Description:

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

COTYLEDON: medium length, narrow to medium width

LEAF: medium green, medium to many lobes, rounded margin, medium density of medium depth margin indentations, short, narrow to medium width, very short petiole

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

SILIQUE: erect attitude, very short, very short to short beak, very short pedicel
SEED COAT: brown

AGRONOMIC CHARACTERISTICS: good resistance to lodging, good resistance to shattering

QUALITY CHARACTERISTICS: erucic acid is 0.01% of total fatty acids, oil content is 45.5% of whole dried seed, protein is 47.3% of dried oil free meal, low concentration of glucosinolates (14.1 µmol/g)

DISEASE REACTIONS: moderately resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam); resistant to Clubroot (Plasmodiophora brassicae)

Origin & Breeding History: 'PA1CN183' is a male sterile line which contains the Ms8 gene construct in the heterozygous state. It was derived by crossing an inbred line containing the Ms8 gene to a donor line, which was then crossed to a recurring parent in a backcrossing scheme. The initial cross was conducted in Saskatoon, Saskatchewan, Canada in 2018. 'PA1CN183' was selected in 2019 on the basis of male sterility stability, its expression of resistance to glufosinate-ammonium herbicide and good combining ability with numerous restorer lines. Other selection parameters included vigour, maturity, blackleg resistance, clubroot resistance, seed pod shattering resistance, oil content, fatty acid profile and glucosinolate content. Breeder seed production commenced in Saskatoon, Saskatchewan, Canada in 2020.

Tests & Trials: The comparative trials for 'PA1CN183' were conducted during the 2021 and 2022 growing seasons in Saskatoon, Saskatchewan. Trials were arranged in a RCB design with 3 replications per variety. The plots consisted of 3 rows that were 6 metres in length with spacing of 25 cm between rows and 50 cm between plots. The planting density resulted in approximately 1300 plants per variety per year. The measured characteristics were based on 30 measurements except for silique characteristics which were based on 60 measurements. The means were based on a two year average. Mean differences were significant at the 2% probability level based on LSD values. Clubroot resistance was evaluated in-house at BASF Canada Inc. in 2020 in a controlled environment using 'PPS02-144' and 'PR6CN441' as the susceptible control varieties. The Clubroot resistance assessment protocol used was developed by the University of Alberta and Nutrien Ag Solutions Canada with input from Agriculture and Agri-Food Canada and the University of Guelph.

Comparison tables for 'PA1CN183' with reference varieties 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Cotyledon length (mm)

Cotyledon width (mm)

Leaf length (cm)

Petiole length (cm)

Flower petal length (mm)

Flower petal width (mm)

Silique length (mm)

Beak length (mm)

Pedicel length (mm)

Days to maturity (number of days from planting to maturity)

Plant height (at maturity) (cm)

Click on image for larger view

Canola: 'PA1CN183' (left) with reference varieties 'PA1CN131' (centre left), 'PPS01-140 A-Line' (centre right) and '5440' (right)