Denomination: 'N90-740'
Botanical Name: Brassica napus
Applicant/Holder: Agriculture & Agri-Food Canada, Saskatoon
Saskatoon Research Centre
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Breeder: Gerhard Rakow, Agriculture & Agri-Food Canada, Saskatoon, Saskatchewan
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
6000 C&E Trail
Lacombe, Alberta
T4L 1W1
Tel: (403) 782-8126
Application Date: 1995-05-15
Application Number: 95-532
Protective direction granted: 1995-05-15
Grant of Rights Date: 1999-11-22
Certificate Number: 0689
Date rights surrendered: 2014-11-22

Variety Description

Varieties used for comparison: 'Midas', 'Crésor and 'Westar'

Summary: The cotyledon length of 'N90-740' is longer than that of 'Midas' and 'Crésor'. 'N90-740' is shorter in plant height than 'Crésor'. The silique beak of 'N90-740' is shorter and the silique length is longer than those of the reference varieties.


'N90-740' is an open-pollinated spring canola variety. The cotyledon is medium to wide and the seedling stem anthocyanin colouration is weak to medium. The largest lower leaf has very weak to weak lobe development and margins with very shallow rounded indentation. Leaf blade glaucosity is weak to medium. The plant is short to medium in height. The flowers are fertile and yellow in colour. The silique is medium in length with a short silique beak and medium to long pedicel. The seed coat colour is black. Plants have fair lodging resistance.

Origin & Breeding History: 'N90-740' was developed at the Agriculture & Agri-Food Research Centre, Saskatoon, Saskatchewan. The original cross ('Crésor' x 'Westar') was made in 1982. Doubled haploids were applied to F1 plants of the original cross and evaluated in the blackleg disease nursery. These selections were backcrossed to 'Westar' in 1986 to improve maturity. The pedigree method was used to select plants with maturity, blackleg resistance, oil content and yield. 'N90-740' was tested as 'ACS-N14'.

Tests & Trials: Tests and trials for 'N90-740' were conducted at the Elora, Research Station, Elora, Ontario during 1995 and 1996. Trials were arranged in 2 replicates with 7 row plots.

Comparison tables for 'N90-740' with reference varieties 'Midas', 'Crésor and 'Westar'

Cotyledon width (mm)

  'N90-740' 'Midas' 'Crésor 'Westar'
mean 26.5 22.79 23.09 25.91

Plant height(cm)

  'N90-740' 'Midas' 'Crésor 'Westar'
mean 112.45 112.83 137.33 112.15

Days to flowering

  'N90-740' 'Midas' 'Crésor 'Westar'
days 49 51 67 50

Days to maturity

  'N90-740' 'Midas' 'Crésor 'Westar'
days 97 100 105 100

Silique length (mm)

  'N90-740' 'Midas' 'Crésor 'Westar'
mean 70.30 63.16 60.19 66.39

Silique beak length (mm)

  'N90-740' 'Midas' 'Crésor 'Westar'
mean 8.89 13.41 10.48 10.15

Pedicel length (mm)

  'N90-740' 'Midas' 'Crésor 'Westar'
mean 28.28 29.76 28.54 28.28
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