‘S05-T6’ has a lighter green leaf colour than ‘S03-W4’. The pubescence on the middle third of the stem of ‘S05-T6’ is a lighter tawny colour than ‘S03-W4’.
Description:
Plant: indeterminate growth, erect growth habit, light tawny pubescence on the middle third of the stem
Hypocotyl: medium anthocyanin colouration
Leaf: medium green colour, rounded ovate shape to the lateral leaflet
Flower: purple
Pod: brown
Seed: spherical flattened shape, medium size, dull lustre, yellow ground colour of testa
Hilum: imperfect yellow colour, funicle same colour as testa, abscission layer lacking
Disease resistance: contains the Rps1c gene conferring resistance to Phytophthora root rot (Phytophthora megasperma f. sp. glycinea), susceptible to soybean cyst nematode (Heterodera glycines)
Agronomic traits: good resistance to shattering and lodging
Origin and Breeding: ‘S05-T6’ was developed from the cross 929494/23834 during the winter of 1997-1998 by Syngenta Seeds Canada Inc. in Kauai, Hawaii. The F1 generation was grown in Arva, Ontario in the summer of 1998. The F2 and F3 generations were grown in a winter nursery near Kekaha, Hawaii in 1998-1999. The F3 generation was grown in Arva, Ontario in the summer of 1999. The F4 and F5 generations were grown in a winter nursery. Single F6 plants were selected in the summer of 2000. The progeny of these selections were grown in a single replicate trial in 2001. One of these lines was identified as CL980101 which was selected based on superior agronomic traits. CL980101 was tested in multiple environments in Ontario and the USA in 2002-2005.
Tests and Trials: Tests and trials were conducted during the summer/fall of 2005 and 2006 in Arva, Ontario. Plots consisted of 2 rows per variety with a row spacing of 60 centimetres and a row length of 5 meters.

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