PR22CN840

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: 'PPS02-364', 'PPS04-205' and '5440'

Summary: The cotyledon of ‘PR22CN840' is wider than that of ‘PPS04-205'. ‘PR22CN840' has a narrower leaf than ‘PPS02-364'. The petiole of ‘PR22CN840' is shorter than those of ‘PPS04-205' and ‘5440'. Flowering occurs earlier for the plants of ‘PR22CN840' than for those of the reference varieties. ‘PR22CN840' has a longer silique and pedicel than the reference varieties. Plant maturity occurs earlier for ‘PR22CN840' than for the reference varieties. At maturity, the plants of ‘PR22CN840' are shorter than those of ‘5440'.

Description:

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

COTYLEDON: medium to long, medium width

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

FLOWER PETAL: yellow, medium length and width

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

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

QUALITY CHARACTERISTICS: erucic acid is 0.03% of total fatty acids, oil content is 42.2% of whole dried seed, protein is 49.1% of dried oil free meal, low concentration of glucosinolates (11.9 µmol/g)

CHEMICAL REACTION: resistant to glufosinate ammonium herbicides

DISEASE REACTION: moderately resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: ‘PR22CN840' is a restorer line in the process of F1 hybrid production. It was derived as a double haploid line containing the Rf3 gene in a homozygous state. The cross between proprietary lines was made in Saskatoon, Saskatchewan, Canada in 2019 and the subsequent double haploid line extraction was made from the resulting F1 in 2020. ‘PR22CN840' was selected in 2021 on the basis of fertility restoration of numerous male sterile lines and expression of resistance to glufosinate-ammonium herbicide. Other selection parameters included height, vigour, maturity, blackleg resistance, seed pod shattering resistance, oil content, fatty acid profile, glucosinolate content and combining ability. Breeder seed production commenced in Saskatoon, Saskatchewan, Canada in 2022.

Tests & Trials: The comparative trials for ‘PR22CN840' 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 'PR22CN840' with reference varieties 'PPS02-364', 'PPS04-205' and '5440'

Cotyledon width (mm)

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)

Silique 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: ‘PR22CN840' (left) with reference varieties ‘PPS02-364' (centre left), ‘PPS04-205' (centre right) and ‘5440' (right)