PA8CN158

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 ‘PA8CN158' is narrower than those of ‘PA1CN131' and ‘5440'. The leaf of ‘PA8CN158' is shorter than those of the reference varieties and narrower than those of ‘PA1CN131' and ‘5440'. ‘PA8CN158' has a shorter petiole than ‘5440'. Flowering occurs later for the plants of ‘PA8CN158' than for those of ‘PA1CN131'. The flower petal of ‘PA8CN158' is shorter and narrower than that ‘5440'. ‘PA8CN158' has a shorter silique than ‘PPS01-140 A-Line' and ‘5440'. The silique beak of ‘PA8CN158' is longer than that of ‘PPS01-140 A-Line'. ‘PA8CN158' has a shorter pedicel than ‘5440'. Plant maturity occurs later for ‘PA8CN158' than for ‘PPS01-140 A-Line'. At maturity, the plants of ‘PA8CN158' are shorter than those of ‘5440'. The seed coat of ‘PA8CN158' is brown whereas it is black for ‘PPS01-140 A-Line' and ‘5440'.

Description:

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

COTYLEDON: short to medium length, narrow

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

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

SILIQUE: erect attitude, very short, short beak, very short to 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 47.1% of whole dried seed, protein is 47.3% of dried oil free meal, medium concentration of glucosinolates (18.7 µmol/g)

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

Origin & Breeding History: ‘PA8CN158' 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 Gent, Belgium in 2017. ‘PA8CN158' was selected in 2018 based on male sterility stability, expression of resistance to glufosinate-ammonium herbicide, and good combining ability with numerous restorer lines. Other selection parameters included height, vigour, maturity, blackleg resistance, clubroot resistance, resistance to seed pod shattering, oil content, fatty acid profile and glucosinolate content. Breeder seed production commenced in Gent, Belgium in 2019.

Tests & Trials: The comparative trials for ‘PA8CN158' were conducted during the 2022 and 2023 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 a total of 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.

Comparison tables for 'PA8CN158' with reference varieties 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Cotyledon width (mm)

Leaf length (cm)

Leaf width (cm)

Petiole length (cm)

Days to flowering (number of days from planting to when 50% of plants have one or more open flowers)

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: ‘PA8CN158' (left) with reference varieties ‘PA1CN131' (centre left), ‘PPS01-140 A-Line' (centre right) and ‘5440' (right)