Denomination: 'MB41001'
Botanical Name: Brassica napus
Applicant/Holder: Monsanto Canada Inc.
900 One Research Road
Winnipeg, Manitoba
R3T 6E3
Breeder: Zenon Lisieczko, Monsanto Canada Inc., Guelph, Ontario
Application Date: 2005-04-07
Application Number: 05-4702
Date Withdrawn: 2008-03-14

Variety Description

Varieties used for comparison: 'Surpass 400' and 'DKL34-55'

Summary: 'MB41001' has deeper leaf margin dentations than 'Surpass 400'. The beak and pedicel of 'MB41001' is longer than in 'Surpass 400'. 'MB41001' matures slightly later than 'DKL34-55'. The plant height of 'MB41001' is slightly shorter than in 'DKL34-55'.


PLANT: medium cotyledon width, very short to short height

LEAF: medium green, medium number of lobes present, sharp margin, medium depth dentations of the margin, short, very narrow to narrow

FLOWER: yellow

POD: short silique, short to medium length beak and pedicel
SEED: black

AGRONOMY: fair to good lodging resistance
QUALITY: trace erucic acid levels, very low glucosinolates

CHEMICAL REACTION: resistant to glyphosate herbicides

Origin & Breeding History: 'MB41001' was developed by the breeder, Zenon Lisieczko of Monsanto Canada Inc., at Listowel, Ontario in 1999. The segregating generations were selected for oil content, standability, yield and resistance to glyphosate herbicides. At the F5 generation, one plant was selected from which 'MB41001' orginated.

Tests & Trials: Tests and trials for 'MB41001' were conducted during the summers of 2005 and 2006 at the Elora Research Station, Elora, Ontario. Plots consisted of 4 rows which were 5 meters in length and a row spacing of 35 cm. There were 2 replicates arranged in a Random Complete Block Design.

Comparison tables for 'MB41001' with reference varieties 'Surpass 400' and 'DKL34-55'

Means are based on a two year average of 40 plant parts for cotyledon measurements, 30 for leaf and 60 for silique characteristics. Differences are significant at the 2% probability level based on LSD values.

Beak length (mm)

  'MB41001' 'Surpass 400' 'DKL34-55'
mean 9.49 7.19 9.50
std. deviation (LSD=0.7236) 2.39 2.15 2.78

Pedicel length (mm)

  'MB41001' 'Surpass 400' 'DKL34-55'
mean 19.59 16.84 19.68
std. deviation (LSD=1.9114) 5.27 4.02 6.60

Days to maturity

  'MB41001' 'Surpass 400' 'DKL34-55'
mean 99.8 99 95.8

Plant height at maturity (cm)

  'MB41001' 'Surpass 400' 'DKL34-55'
mean 84.25 85.87 90.92
std. deviation (LSD=4.4147) 8.64 6.56 7.49
Date modified: