VT Barrier


Denomination: 'VT Barrier'
Previously Proposed Denomination: '9552'
Botanical Name: Brassica napus
Applicant/Holder: Crop Production Services (Canada) Inc.
538058 – 56 St. E
P.O. Box 5234
High River, Alberta
T1V 1M4
Breeder: Laurie Friesen, Saskatchewan Wheat Pool, Saskatoon, Saskatchewan
Application Date: 2008-02-27
Application Number: 08-6190
Grant of Rights Date: 2011-05-02
Certificate Number: 4059
Date rights surrendered: 2017-04-17

Variety Description

Varieties used for comparison: 'SP Banner', '9550', 'SWJ8001RR', 'NR04-04769' and 'NR04-01675'

Summary: '9552' has fewer leaf lobes per leaf than that of '9550', 'SWJ8001RR', 'NR04-04769', and 'NR04-01675'. The margin dentation of '9552' is shallower and less dense than that of 'SWJ8001RR' and '9550'. '9552' has shorter leaves than 'SWJ8001RR'and narrower leaves than '9550'. At full flowering, the plants of '9552' are shorter than 'SWJ8001RR' and 'NR04-01675'. '9552' flowers earlier than 'SWJ8001RR' and 'NR04-04769'. The flowers of '9552' have shorter petals than those of 'SP Banner', broader petals than 'SWJ8001RR' and narrower petals than 'SP Banner'. '9552' has a wider silique than 'SP Banner' and '9550'. The silique beak of '9552' is shorter than '9550' and longer than 'SWJ8001RR' , 'NR04-04769' and 'NR04-01675'. 'NR04-04769. '9552' has dark brown to black seeds whereas those of 'SWJ8001RR' are red brown to black. At maturity, the plants of '9552' are shorter than those of 'NR04-01675'. Note than 'SP Armada' was also included as a reference variety, however it differs from '9952' mostly by its susceptibility to glyphosate.


PLANT: open pollinated type, spring seasonal type

LEAF: dark green to blue green, very few lobes, rounded margin, very shallow to shallow dentation of margin, medium length, narrow to medium width

FLOWER PETALS: yellow, medium length, medium width

SILIQUE: semi-erect attitude, long, wide, medium length beak, medium length pedicel

SEED: dark brown to black

QUALITY CHARACTERISTICS: erucic acid is 0.27% of total fatty acids, very low glucosinolates (8.74 µmol/g)

HERBICIDE RESISTANCE: resistant to glyphosate herbicide

Origin & Breeding History: '9552' (experimental designation NR04-04346) was developed by the Agriculture Research and Development Divison of Viterra in Saskatoon, Saskatchewan. The variety originated from a cross made in 2003. Segregating generations were selected for maturity, lodging resistance, and seed quality. Roundup herbicide was applied at several stages of development to further select for herbicide resistant lines.

Tests & Trials: Test and trials for '9552' were conducted during the summers of 2007 and 2008 in Rosthern, Saskatchewan. Plots consisted of 6 rows per variety spaced 20 centimeters apart with a row length of 5.5 meters. There were 4 replicates arranged in an RCB design.

Comparison tables for 'VT Barrier' with reference varieties 'SP Banner', '9550', 'SWJ8001RR', 'NR04-04769' and 'NR04-01675'

Flowering date (days)

  'VT Barrier' 'SP Banner' '9550' 'SWJ8001RR' 'NR04-04769' 'NR04-01675'
mean 46.6 45.5 47.1 49.7 49.5 47.4

Silique length (mm)

  'VT Barrier' 'SP Banner' '9550' 'SWJ8001RR' 'NR04-04769' 'NR04-01675'
mean 72.2 68.2 77.4 65.5 64.5 65.3
std. deviation 2.95 2.95 3.17 2.91 2.89 3.33
significance N/A not significant p less than 0.0016 p less than 0.0016 p less than 0.0016 p less than 0.0016

Silique width (mm)

  'VT Barrier' 'SP Banner' '9550' 'SWJ8001RR' 'NR04-04769' 'NR04-01675'
mean 4.9 4.4 4.1 4.6 4.5 4.7
std. deviation 0.27 0.41 0.29 0.29 0.28 0.29
significance N/A p less than 0.01 p less than 0.01 not significant not significant not significant

Click on image for larger view
VT Barrier
Canola: '9552' (left) with reference varieties from left to right: 'SP Banner', 'SP Armada', '9550', 'SWJ8001RR', 'NR04-04769' and 'NR04-01675'

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