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Denomination: 'S18-R6'
Previously Proposed Denomination: '04DL186048'
Botanical Name: Glycine max
Applicant/Holder: Syngenta Seeds Inc.
11055 Wayzata Blvd.
Minnetonka, Minnesota
United States of America
Breeder: David Lee, Syngenta Canada Inc., Arva, Ontario
Agent in Canada: Syngenta Canada Inc.
15910 Medway Road
R.R. #1
Arva, Ontario
Tel: 519-461-2032
Application Date: 2007-02-12
Application Number: 07-5741
Grant of Rights Date: 2011-02-15
Certificate Number: 4004
Grant of Rights Termination Date: 2029-02-15

Variety Description

Varieties used for comparison: 'IA1008' and 'S18-Y4'

Summary: 'S18-R6' has medium intensity of anthocyanin colouration of the hypocotyl while 'IA1008' has no anthocyanin colouration of the hypocotyl. The flower colour of 'S18-R6' is purple while it is white for 'IA1008'. 'S18-R6' flowers later than 'IA1008' and 'S18-Y4'. The pod colour of 'S18-R6' is a tan colour while it is brown in 'IA1008' and 'S18-Y4'. 'S18-R6' matures later than 'S18-Y4'. The oil content of the seed of 'S18-R6' is lower than in 'S18-Y4'.


HYPOCOTYL: medium anthocyanin colour

PLANT: indeterminate growth type, erect growth habit, grey pubescence on middle third of main stem

LEAF: medium green at flowering, rounded ovate lateral leaflet shape

FLOWER: purple

POD: tan

SEED: spherical flattened shape, medium size, dull lustre, yellow ground colour of testa, medium sized yellow hilum, yellow funicle, abscission layer normal

AGRONOMY: 2900 heat unit rating, good resistance to lodging, good resistance to shattering

DISEASE REACTION: resistance to cyst nematode race 3 and moderately resistance to race 14 (Heterodera glycines)

QUALITY: 40.4% protein, 19.4% oil

Origin & Breeding History: 'S18-R6' (experimental designation 04DL186048) was derived from the cross 89694 / 62755 made during the summer of 2001 in Arva, Ontario. The F1-F2 generations were grown near Kekaha, Hawaii in the winter of 2001-2002. The F3 was grown in Arva, Ontario in the summer of 2002. The F4 generation was grown in a winter nursery in 2002-2003 and single plants were selected and threshed individually. The progeny were yield tested in a single replicate test in 2003 and one of these lines, identified as 04DL186048, was selected for further testing based on superior agronomic traits. The variety has been tested in multiple environments since 2004 in Ontario and the USA.

Tests & Trials: Tests and trials were conducted over the years 2005, 2006, 2007, 2008 in Arva, Ontario. Plots consisted of 2 rows, with a row length of 5 meters and a row spacing of 75 cm. There were 2 replicates each year.

Comparison tables for 'S18-R6' with reference varieties 'IA1008' and 'S18-Y4'

Days to flowering

  'S18-R6' 'IA1008' 'S18-Y4'
mean 52 50 49

Days to maturity

  'S18-R6' 'IA1008' 'S18-Y4'
mean 120 120 118

Oil content of the seed (percent)

  'S18-R6' 'IA1008' 'S18-Y4'
mean 19.4 N/A 21.5

Click on image for larger view
Soybean: 'S18-R6' (left) with reference variety 'S18-Y4' (right)

Click on image for larger view
Soybean: 'S18-R6' (right) with reference variety 'IA1008' (left)

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