PA0CN173

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 'PA0CN173' is longer than that of 'PPS01-140 A-Line' and shorter and narrower than that of '5440'. 'PA0CN173' has a shorter leaf than '5440'. The petiole of 'PA0CN173' is longer than that of 'PA1CN131' and shorter than that of '5440'. The plants of 'PA0CN173' flower later than those of 'PA1CN131'. The petal of 'PA0CN173' is shorter than that '5440'. 'PA0CN173' has a longer silique than 'PA1CN131'. The silique beak of 'PA0CN173' is shorter than that of '5440' and longer than that of 'PPS01-140 A-Line'. 'PA0CN173' has a shorter pedicel than '5440'. At maturity, the plants of 'PA0CN173' are taller than the plants of 'PA1CN131' and shorter than those of '5440'. The seed coat of 'PA0CN173' is black whereas it is brown for 'PA1CN131'.

Description:

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

COTYLEDON: medium length and width

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

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

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

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

QUALITY CHARACTERISTICS: erucic acid is 0.02% of total fatty acids, oil content is 43.0% of whole dried seed, protein is 45.9% of dried oil free meal, low concentration of glucosinolates (11.6 µmol/g)

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

Origin & Breeding History: 'PA0CN173' is a male sterile line which contains the Ms8 gene construct in the heterozygous state. It was derived by backcrossing a double haploid line to a male sterile line used as the source of the Ms8 gene. The double haploid line was extracted from the F1 generation derived from a cross made in 2014 in Saskatoon, Saskatchewan, Canada and was produced in 2015. 'PA0CN173' was selected in 2016 on the basis of 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.

Tests & Trials: The comparative trials for 'PA0CN173' 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.

Comparison tables for 'PA0CN173' with reference varieties 'PA1CN131', 'PPS01-140 A-Line' and '5440'

Cotyledon length (mm)

Cotyledon width (mm)

Leaf length (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)

Silique length (mm)

Beak length (mm)

Pedicel length (mm)

Plant height (at maturity) (cm)

Click on image for larger view

Canola: 'PA0CN173' (left) with reference varieties 'PA1CN131' (centre left), 'PPS01-140 A-Line' (centre right) and '5440' (right)