PR6CN669

Canola

Variety Description

Varieties used for comparison: 'PPS02-364', 'PPS04-205' and '5440'

Summary: The cotyledon of 'PR6CN669' is narrower than '5440' and it is shorter than 'PPS02-364' and '5440'. The leaf and petiole of 'PR6CN669' are longer than that of 'PPS02-364'. 'PR6CN669' flowers later than the reference varieties. The petal of 'PR6CN669' is shorter than that of 'PPS02-364' and '5440' whereas the petal is narrower than the reference varieties. The silique of 'PR6CN669' is longer than that of 'PPS04-205'. The silique of 'PR6CN669' has a shorter beak than that of 'PPS02-364'. The pedicel of 'PR6CN669' is shorter than that of '5440'. 'PR6CN669' is later maturing than the reference varieties. At maturity, the plant of 'PR6CN669' is taller than that of 'PPS04-205' and shorter than that of '5440'.

Description:

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

COTYLEDON: medium length and width

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

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

SILIQUE: horizontal to semi-drooping attitude, medium length, short to medium length beak, very short to short pedicel
SEED COAT: black

AGRONOMIC CHARACTERISTICS: medium resistance to lodging, good resistance to shattering
QUALITY CHARACTERISTICS: erucic acid is 0.02% of total fatty acids, oil content is 48.3% of whole dried seed, protein is 49.5% of dried oil free meal, very low glucosinolates (9.1 µmol/g)
HERBICIDE REACTION: resistant to glufosinate ammonium herbicides
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PR6CN669' is a restorer line in the process of F1 hybrid production. It was derived by crossing a double haploid line containing the Rf3 gene in homozygous state to a donor line in a backcrossing scheme. The initial cross was made at Bayer CropScience in Saskatoon, Saskatchewan, Canada in 2013 and the double haploid line extraction was made at the same location in 2014. 'PR6CN669' was selected in 2016 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, improved resistance to seed pod shattering, oil content, fatty acid profile, glucosinolate content and combining ability.

Tests & Trials: The comparative trials for 'PR6CN669' were conducted during the 2016 and 2017 growing seasons in Saskatoon, Saskatchewan. They were set up in a RCB Design with 3 replications per variety. Each year, the plots consisted of 3 rows that were 6 metres in length with a spacing of 25 cm between rows and 50 cm between plots. The measured characteristics were based on 30 measurements of the cotyledon, leaf, flower and plant height and 60 measurements of the silique. 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 'PR6CN669' with reference varieties 'PPS02-364', 'PPS04-205' and '5440'

Cotyledon width (mm)

Cotyledon length (mm)

Leaf length (cm)

Petiole length (cm)

Days to flowering

Flower petal length (mm)

Flower petal width (mm)

Silique length (mm)

Beak length (mm)

Pedicel length (mm)

Days to maturity

Plant height at maturity (cm)

Click on image for larger view

Canola: 'PR6CN669' (far left) with reference varieties 'PPS02-364' (centre left), 'PPS04-205' (centre right) and '5440' (far right)