PR6CN665

Canola

Variety Description

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

Summary: The leaf of 'PR6CN665' is longer than that of 'PPS02-364'. 'PR6CN665' flowers later than the reference varieties. The petal of 'PR6CN665' is narrower than that of 'PPS04-205'. The silique of 'PR6CN665' is longer than that of 'PPS04-205' and it is shorter than that of '5440'. The silique of 'PR6CN665' has a shorter beak than the reference varieties. The pedicel of 'PR6CN665' is shorter than that of 'PPS02-364'. At maturity, the plant of 'PR6CN665' is shorter than that of '5440' whereas it is taller than that of 'PPS02-364' and 'PPS04-205'. The seed coat of 'PR6CN665' is brown whereas the seed coat is black for the reference varieties.

Description:

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

COTYLEDON: medium to long, medium to wide

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

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

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

AGRONOMIC CHARACTERISTICS: fair to medium resistance to lodging, medium to good resistance to shattering
QUALITY CHARACTERISTICS: erucic acid is 0.01% of total fatty acids, oil content is 49.0% of whole dried seed, protein is 47.2% of dried oil free meal, very low glucosinolates (9.8 µmol/g)
HERBICIDE REACTION: resistant to glufosinate ammonium herbicides
DISEASE REACTION: resistant to Blackleg (Leptosphaeria maculans asexual stage: Phoma lingam)

Origin & Breeding History: 'PR6CN665' is a restorer line in the process of F1 hybrid production. It was derived by crossing a inbred line containing the Rf3 gene in homozygous state to a donor line, which was then crossed to a recurring parent in a backcrossing scheme. The initial cross was made at Bayer CropScience in Saskatoon, Saskatchewan, Canada in 2012. 'PR6CN665' 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, clubroot tolerance, oil content, fatty acid profile, glucosinolate content and combining ability.

Tests & Trials: The comparative trials for 'PR6CN665' 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 'PR6CN665' with reference varieties 'PPS02-364', 'PPS04-205' and '5440'

Days to flowering

Flower petal width (mm)

Silique length (mm)

Beak length (mm)

Pedicel length (mm)

Plant height at maturity (cm)

Click on image for larger view

Canola: 'PR6CN665' (far left) with reference varieties 'PPS02-364' (centre left), 'PPS04-205' (centre right) and '5440' (far right)