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Prairie Grande


Denomination: 'Prairie Grande'
Botanical Name: Linum usitatissimum
Applicant/Holder: Agriculture & Agri-Food Canada, Morden Research and Development Centre
Unit 100-101 Route 100
Morden, Manitoba
R6M 1Y5
Breeder: Scott Duguid, Agriculture & Agri-Food Canada, Morden, Manitoba
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Tel: (306) 203-1383
Application Date: 2007-05-17
Application Number: 07-5916
Grant of Rights Date: 2009-03-11
Certificate Number: 3461
Date rights surrendered: 2019-01-31

Variety Description

Varieties used for comparison: 'Hanley', 'AC Emerson', 'AC Watson' and 'CDC Bethune'

Summary: 'Prairie Grande' has a plant height that is shorter than 'CDC Bethune' but taller than 'AC Watson'. 'Prairie Grande' flowers slightly earlier than 'CDC Bethune'. The maturity of 'Prairie Grande' is slightly earlier than 'Hanley'. 'Prairie Grande' has a light violet stigma colour while it is white in 'AC Watson'. 'Prairie Grande' has better lodging resistance than 'AC Watson'. The protein content of the seed of 'Prairie Grande' is lower than 'Hanley' and 'CDC Bethune'. 'Prairie Grande' has slightly higher oil content than 'Hanley', 'AC Emerson' and 'AC Watson'. 'Prairie Grande' has lower palmitic and linoleic acid levels of the seed than 'Hanley'. The stearic acid levels of the seed of 'Prairie Grande' is higher than in 'Hanley' and 'AC Emerson'. 'Prairie Grande' has lower linolenic acid levels of the seed than 'Hanley' and 'AC Emerson'.


HYPOCOTYL: absent to weak anthocyanin colouration

FLOWER: flattened disk shape, medium sized corolla, no longitudinal folding of the petals, absent or very weak to weak sepal dotting, medium blue petal colour, white filament, blue anthers, white style, light violet stigma

CAPSULE: medium size
SEED: medium brown colour, medium size

DISEASE RESISTANCE: immune to flax rust (Melampsora lini), moderate resistance to flax wilt (Fusarium oxysporum f. sp. lini), moderate resistance to powdery mildew (Erysiphe graminis)

AGRONOMY: good resistance to shattering, lodging and capsule loss

USE: oilseed flax variety

Origin & Breeding History: 'Prairie Grande' (experimental designation FP2161) was developed by Agriculture & Agri-Food Canada at the Morden Research Station, Morden, Manitoba from the cross AC Watson / CI3395 made in 1996. The F2 and subsequent generations were advanced using the pedigree method with selection criteria of oil content, oil quality, lodging and rust resistance. Single plant selections were made in the F3 and F5 generations. An F7 line, designated M6954, was selected and evaluated in preliminary yield trials in 2001 and for Fusarium wilt in Manitoba and Saskatchewan. The line was evaluated as M6954 in the 2001 Canadian Flax Evaluation Trial at 7 locations in Manitoba, Saskatchewan and British Columbia. This line was entered into the Flax Cooperative Test from 2003 to 2005.

Tests & Trials: Tests and trials were conducted during the summers of 2006 and 2007 in Morden, Manitoba. Plots consisted of 6 rows that were 5.5 meters in length with a row spacing of 18 centimeters. There were 2 replicates arranged in a RCB design.

Comparison tables for 'Prairie Grande' with reference varieties 'Hanley', 'AC Emerson', 'AC Watson' and 'CDC Bethune'

Plant height (cm)

  'Prairie Grande' 'Hanley' 'AC Emerson' 'AC Watson' 'CDC Bethune'
mean 54.1 53.2 53.9 49.2 58.1
std. deviation (LSD=2.5) 4.9 7.9 5.3 6.4 4.8

Days to flowering

  'Prairie Grande' 'Hanley' 'AC Emerson' 'AC Watson' 'CDC Bethune'
mean 47.5 47.8 47.3 46.3 49.3
std. deviation (LSD=0.8) 1.5 0.8 1.3 1.3 2.3

Days to capsule maturity

  'Prairie Grande' 'Hanley' 'AC Emerson' 'AC Watson' 'CDC Bethune'
mean 85.8 88.0 85.0 86.5 86.5
std. deviation (LSD=0.9) 7.5 5.2 6.7 7.4 5.5
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