PR7CN688

Canola

Variety Description

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

Summary: The cotyledon of 'PR7CN688' is shorter and narrower than that of '5440'. The margins on the leaf of 'PR7CN688' are rounded whereas the margins on the leaf of 'PPS02-364' are sharp. The leaf of 'PR7CN688' is shorter than that of '5440'. 'PR7CN688' has a shorter petiole than that of 'PPS04-205' and '5440'. The petal of 'PR7CN688' is shorter than that of 'PPS02-364' and '5440' and narrower than that of 'PPS04-205' and '5440'. The silique attitude of 'PR7CN688' is horizontal to semi-drooping whereas the attitude is semi-erect to horizontal for 'PPS04-205'. The silique and pedicel of 'PR7CN688' are longer than that of the reference varieties. 'PR7CN688' has a longer silique beak than that of '5440'. 'PR7CN688' matures earlier than the reference varieties. At maturity, the plant of 'PR7CN688' is shorter than that of '5440'.

Description:

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

COTYLEDON: medium length and width

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

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

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

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

QUALITY CHARACTERISTICS: erucic acid is 0.03% of total fatty acids, oil content is 47.3% of whole dried seed, protein is 47.0% of dried oil free meal, low concentration of glucosinolates (10.0 µmol/g)

HERBICIDE REACTION: resistant to glufosinate ammonium herbicides

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

Origin & Breeding History: 'PR7CN688' 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 2013, with the subsequent DH line extraction made at BASF Canada Inc. in Saskatoon, Saskatchewan, Canada in 2014. 'PR7CN688' was selected in 2017 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.

Tests & Trials: The comparative trials for 'PR7CN688' were conducted during the 2017 and 2018 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 'PR7CN688' with reference varieties 'PPS02-364', 'PPS04-205' and '5440'

Cotyledon length (mm)

Cotyledon width (mm)

Leaf length (cm)

Petiole length (cm)

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: 'PR7CN688' (left) with reference varieties 'PPS02-364' (centre left), 'PPS04-205' (centre right) and '5440' (right)