NR04-02720

Canola

Denomination: 'NR04-02720'
Botanical Name: Brassica napus
Applicant/Holder: Viterra Inc.
201- 407 Downey Road
Saskatoon, Saskatchewan
S7N 4L8
Canada
Breeder: Laurie Friesen, Saskatchewan Wheat Pool, Saskatoon, Saskatchewan
Application Date: 2007-02-23
Application Number: 07-5760
Date Withdrawn: 2009-10-13

Variety Description

Varieties used for comparison: 'SP Banner', 'SP Armada' and '9550'

Summary: 'NR04-02720' has more leaf lobes than 'SP Armada' but fewer than '9550'. The leaf margin of 'NR04-02720' has a higher density of dentations than 'SP Banner' but lower than '9550'. 'NR04-02720' has a taller plant height at full flowering than 'SP Armada'. The silique of 'NR04-02720' is longer than that of 'SP Banner'. 'NR04-02720' has a wider silique than 'SP Banner' and '9550'. The beak of 'NR04-02720' is shorter than that of 'SP Armada' and '9550'. 'NR04-02720' has a longer pedicel than that of 'SP Banner'. 'NR04-02720' is resistant to glyphosate herbicides while 'SP Armada' is not.

Description:

PLANT: open pollinated spring type, tall at full flowering and maturity, resistant to glyphosate herbicides

LEAF: medium to dark green, few to medium number of lobes, rounded margin type, moderate number of shallow to medium depth margin dentations, medium to long length, medium to wide width

FLOWERS: yellow, long and wide petals, not touching to overlapping petal spacing

SILIQUE: horizontal attitude, long to very long, wide to very wide, medium length beak, long to very long pedicel

SEED: dark brown to black

QUALITY CHARACTERISTICS: erucic acids 0.11% of total fatty acids, very low glucosinolates

Origin & Breeding History: 'NR04-02720' was developed from a cross made in 2004 in Saskatoon, Saskatchewan. An F1 plant derived from this cross was used as a donor plant to produce microspore derived doubled haploids in 2004. From this population of doubled haploids, one doubled haploid line was selected and designated 'NR04-02720'. All subsequent generations of 'NR04-02720' were derived from this selected plant. Selection criteria included resistance to Roundup, maturity, lodging resistance, seed quality, disease resistance and yield. Yield trials were conducted in 2004-2006 with concurrent trials run for herbicide resistance. Disease testing was conducted in 2005 and 2006.

Tests & Trials: Tests and trials were conducted during the summers of 2006 and 2007 in Rosthern, Saskatchewan. Plots consisted of 6 rows, with a row spacing of 20cm and a row length of 5.5 meters. There were 4 replicates arranged in an RCB design.


Comparison tables for 'NR04-02720' with reference varieties 'SP Banner', 'SP Armada' and '9550'

Means are based on a two year average of 30 measurements for plant height and 60 for silique, beak and pedicel characteristics. Differences are significant at the 2% probability level based on LSD values.

Plant height at full flowering (cm)

  'NR04-02720' 'SP Banner' 'SP Armada' '9550'
mean 73.3 68.8 64.5 71.4
std. deviation (LSD=5.31) 4.29 4.44 3.82 4.32
significance N/A not significant p less than 0.02 not significant

Silique length (mm)

  'NR04-02720' 'SP Banner' 'SP Armada' '9550'
mean 81.5 66.3 76.3 79.7
std. deviation (LSD=9.53) 4.90 3.73 3.06 3.70
significance N/A p less than 0.02 not significant not significant

Silique width (mm)

  'NR04-02720' 'SP Banner' 'SP Armada' '9550'
mean 5.7 4.7 5.2 4.3
std. deviation (LSD=0.51) 0.55 0.36 0.40 0.41
significance N/A p less than 0.02 not significant p less than 0.02

Beak length (mm)

  'NR04-02720' 'SP Banner' 'SP Armada' '9550'
mean 13.3 11.5 15.6 17.4
std. deviation (LSD=1.96) 1.24 1.40 1.28 1.35
significance N/A not significant p less than 0.02 p less than 0.02

Pedicel length (mm)

  'NR04-02720' 'SP Banner' 'SP Armada' '9550'
mean 26.1 20.6 25.2 23.7
std. deviation (LSD=3.96) 2.65 2.05 2.24 3.47
significance N/A p less than 0.02 not significant not significant

Click on image for larger view
NR04-02720
Canola: 'NR04-02720' (far left) with reference varieties 'NR02-5659' (centre left), 'SP Armada' (centre), 'SP Banner' (centre right) and '9550' (far right)

Click on image for larger view
NR04-02720
Canola: 'NR04-02720' (far left) with reference varieties 'NR02-5659' (centre left), 'SP Banner' (centre), 'SP Armada' (centre right) and '9550' (far right)

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