PR9CN758

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 'PR9CN758' is longer than the cotyledon of 'PPS04-205' and narrower than that of '5440'. 'PR9CN758' has a shorter petiole than that of 'PPS04-205'. The plants of 'PR9CN758' flower later than the plants of 'PPS02-364' and '5440'. The petal of 'PR9CN758' is longer than those of 'PPS04-205' and '5440. The silique of 'PR9CN758' is longer than those of 'PPS04-205' and '5440'. The pedicel of 'PR9CN758' is longer than those of the reference varieties. The plants of 'PR9CN758' mature earlier than the plants of 'PPS04-205'. At maturity, the plants of 'PR9CN758' are taller than the plants of 'PPS02-364' and 'PPS04-205'. The seed coat of 'PR9CN758' is brown whereas it is black for the reference varieties.

Description:

PLANT: male fertile inbred line, spring type, medium to tall 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, medium length, narrow to medium width, short petiole

FLOWER PETAL: yellow, medium length and width

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

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

QUALITY CHARACTERISTICS: erucic acid is 0.02% of total fatty acids, oil content is 46.5% of whole dried seed, protein is 48.1% of dried oil free meal, low concentration of glucosinolates (12.6 µmol/g)

CHEMICAL REACTION: resistant to glufosinate ammonium herbicides

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

Origin & Breeding History: 'PR9CN758' 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 was made at BASF Canada Inc. in Saskatoon, Saskatchewan, Canada in 2015 and the subsequent double haploid line extraction was made at BASF Canada Inc. in Saskatoon, Saskatchewan, Canada in 2016. 'PR9CN758' was selected in 2018 on the basis of fertility restoration of numerous male sterile lines and expression of tolerance to glufosinate-ammonium herbicide. Other selection parameters included height, vigour, maturity, blackleg resistance, seed pod shatter resistance, oil content, fatty acid profile, glucosinolate content and combining ability. Breeder seed production commenced in Saskatoon, Saskatchewan, Canada in 2019.

Tests & Trials: The comparative trials for 'PR9CN758' 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 'PR9CN758' with reference varieties 'PPS02-364', 'PPS04-205' and '5440'

Cotyledon length (mm)

Cotyledon width (mm)

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)

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: 'PR9CN758' (left) with reference varieties 'PPS04-205' (centre left), 'PPS02-364' (centre right) and '5440' (right)