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Denomination: 'Toki'
Previously Proposed Denomination: 'OT02-16'
Botanical Name: Glycine max
Applicant/Holder: Agriculture & Agri-Food Canada, Ottawa
Ottawa Research and Development Centre
Room 1093A - 960 Carling Avenue
Ottawa, Ontario
K1A 0C6
Breeder: Elroy Cober, Agriculture & Agri-Food Canada, Ottawa, Ontario
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Tel: (306) 385-9316
Application Date: 2005-05-24
Application Number: 05-4909
Grant of Rights Date: 2008-08-15
Certificate Number: 3272
Date rights surrendered: 2012-10-31

Variety Description

Varieties used for comparison: 'OAC Champion', 'Dundas' and 'PS44'

Summary: 'Toki' has a purple hypocotyl and purple flowers while 'Dundas' has a green hypocotyl and white flowers. 'Toki' has determinate stem termination while the reference varieties have indeterminate stem terminations. 'Toki' has a shorter plant height than the reference varieties. 'Toki' has gray pubescence while the reference varieties have brown pubescence. 'Toki' has tan pod colour while 'Dundas' and 'PS44' have brown pod colour. 'Toki' matures earlier than 'Dundas' and 'PS44'. 'Toki' has yellow hilum colour while 'OAC Champion' and 'PS44' have imperfect yellow hilum colour and 'Dundas' has brown hilum colour.


PLANT: determinate stem termination genotype, gray pubescence

LEAVES: three leaflets, ovate terminal leaflet

FLOWER: purple

MATURITY: group 0, 2700 heat units
POD: tan
SEED: spherical flattened in shape, intermediate seed coat lustre, yellow seed coat, yellow hilum, yellow cotyledon

AGRONOMIC TRAITS: fair resistance to lodging
CHEMICAL CHARACTERISTICS: low seed coat peroxidase activity

Origin & Breeding History: 'Toki' originated from the cross Ken Feng/AC Proteus(X3153-B-B-1-8)*2/2/Tamba Black, made by the Eastern Cereal and Oilseed Research Centre, Agriculture & Agri-Food Canada, Ottawa, Ontario. The F2 population was grown in Ottawa in 1994. Pedigree selection was employed through the F5 generation. In the F5 generation, selected progeny rows were bulked for evaluation in following generations. 'Toki' was tested as X3790-11-5-1 in Ottawa in 1998 and 1999 and tested as OT02-16 at multiple locations in Ontario and Quebec from 2000 to 2004.

Tests & Trials: Trials for 'Toki' were conducted in 2005 and 2006 at the Eastern Cereal and Oilseed Research Centre, Agriculture & Agri-Food Canada, Ottawa, Ontario. The trials consisted of four replications with four rows per replication. Plots were approximately 1.6 x 5 metres and were arranged in a randomized complete block design.

Comparison tables for 'Toki' with reference varieties 'OAC Champion', 'Dundas' and 'PS44'

Plant height (cm)

  'Toki' 'OAC Champion' 'Dundas' 'PS44'
mean 83 94 88 105
number measured 8 8 8 8

Maturity (95% pods ripe)

  'Toki' 'OAC Champion' 'Dundas' 'PS44'
days to maturity 114 114 117 118

Heat unit rating

  'Toki' 'OAC Champion' 'Dundas' 'PS44'
rating 2700 2700 2750 2750

Seed weight (g/100 seed)

  'Toki' 'OAC Champion' 'Dundas' 'PS44'
grams 18.9 21.3 17.3 19.1

Protein content

  'Toki' 'OAC Champion' 'Dundas' 'PS44'
% protein 41.8 41.2 40.6 40.1

Oil content

  'Toki' 'OAC Champion' 'Dundas' 'PS44'
% oil 20.8 21.5 21.8 21.7

Click on image for larger view
Soybean: 'Toki' (left) with reference variety 'OAC Champion' (right)

Click on image for larger view
Soybean: Reference varieties 'Dundas' (left) and 'PS44' (right)

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