PB8CN254

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: 'PB1CN231', 'PPS01-140 B-Line' and '5440'

Summary: The cotyledon of 'PB8CN254' is longer than that of 'PPS01-140 B-Line'. The leaf of 'PB8CN254' is shorter than the leaf of '5440' and wider than that of 'PPS01-140 B-Line'. The petiole of 'PB8CN254' is shorter than those of 'PPS01-140 B-Line' and '5440'. The silique of 'PB8CN254' has a longer beak than that of 'PPS01-140 B-Line'. The plants of 'PB8CN254' mature later than the plants of the reference varieties. At maturity, the plants of 'PB8CN254'are shorter than the plants of '5440'. The seed coat of 'PB8CN254' is brown whereas it is black for 'PPS01-140 B-Line' and '5440'.

Description:

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

COTYLEDON: medium to long, medium to wide

LEAF: medium green, medium number of lobes, rounded margin, medium to dense margin indentations of shallow to medium depth, short to medium length, medium width, short petiole

FLOWER PETAL: yellow, medium length and width

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

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

QUALITY CHARACTERISTICS: erucic acid is 0.02% of total fatty acids, oil content is 51.6% of whole dried seed, protein is 45.3% of dried oil free meal, medium concentration of glucosinolates (15.9 µmol/g)

CHEMICAL REACTION: susceptible to glufosinate ammonium herbicides

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

Origin & Breeding History: 'PB8CN254' is the male fertile maintainer line of 'PA8CN154'. It is a non-transgenic selected line which was derived by crossing an inbred line containing the Ms8 gene to a donor line, which was then used as a recurring parent in a backcrossing scheme. The initial cross and subsequent backcross were conducted in Gent, Belgium in 2016 and 2017, respectively. 'PB8CN254' was selected in 2017 on the basis of per se performance, expression of tolerance to glyphosate herbicide, vigour, maturity, blackleg resistance, clubroot tolerance, seed pod shattering resistance, oil content, fatty acid profile and glucosinolate content. Breeder seed production commenced in Saskatoon, Saskatchewan, Canada in 2017.

Tests & Trials: The comparative trials for 'PB8CN254' were conducted during the 2019 and 2021 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 the 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 'PB8CN254' with reference varieties 'PB1CN231', 'PPS01-140 B-Line' and '5440'

Cotyledon length (mm)

Leaf length (cm)

Leaf width (cm)

Petiole length (cm)

Beak length (mm)

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

Plant height (at maturity) (cm)

Click on image for larger view

Canola: 'PB8CN254' (left) with reference varieties 'PB1CN231' (centre left), 'PPS01-140 B-Line' (centre right) and '5440' (right)