5605HR CL


Denomination: '5605HR CL'
Previously Proposed Denomination: 'BW918'
Botanical Name: Triticum aestivum
Applicant/Holder: Syngenta Canada, Inc.
105 Jefferson Street
Morden, Manitoba
R6M 0B8
Breeder: Francis Kirigwi, Syngenta Seeds Canada Inc., Morden, Manitoba
Application Date: 2012-05-01
Application Number: 12-7606
Grant of Rights Date: 2014-02-10
Certificate Number: 4717
Grant of Rights Termination Date: 2032-02-10

Variety Description

Varieties used for comparison: 'WR859CL' and 'McKenzie'

Summary: The growth habit of 'BW918' is intermediate to semi-prostrate whereas it is semi-erect to intermediate in 'McKenzie'. The frequency of plants with recurved flag leaves is medium to medium low whereas it is high in 'WR859CL'. The plants of 'BW918' are taller than those of 'WR859CL'. In profile, the spike shape of 'BW918' is parallel-sided whereas it is tapering in 'WR859CL' and 'McKenzie'. The beak of the lower glume of 'BW918' is medium to long whereas it is very short on 'McKenzie'. The width of the crease of the kernel of 'BW918' is medium whereas that of 'WR859CL' is narrow. The plants of 'BW918' are tolerant to Imazamox-based herbicides whereas those of 'McKenzie' are not.


PLANT: common hard red spring type, intermediate to semi-prostrate growth habit at the 5-9 tiller stage

SEEDLING (4 leaf stage): absent or very weak intensity of anthocyanin colouration of the coleoptile, glabrous sheath and blade of the lower leaves

FLAG LEAF: medium frequency of plants with recurved flag leaves, absent to very weak intensity of anthocyanin colouration of the auricles, weak to medium glaucosity of the sheath, glabrous blade and sheath

SPIKE: weak to weak-medium glaucosity at heading, parallel sided shape in profile, medium to dense, awns present, awns equal in length to the length of the spike
SPIKE AT MATURITY: white, white awns, erect attitude, medium-dense to medium hairiness of convex surface of apical rachis segment
STRAW (AT MATURITY): medium thickness of pith in cross-section, no anthocyanin colouration

LOWER GLUME: medium to long, wide to medium-wide, glabrous
LOWER GLUME SHOULDER: medium width, slightly sloping to straight
LOWER GLUME BEAK: medium to long
KERNEL: medium red colour, medium size and length, medium to wide, oval to ovate, angular cheek shape, short to medium length brush hairs, round to oval medium sized germ, medium width and shallow to medium depth of crease

HERBICIDE REACTION: adapted to the Clearfield weed management system

Origin & Breeding History: 'BW918' (experimental designation 03S2057-1) originated from the cross between '99S2232-10' and '99S3228-4', made in Berthoud, Colorado, USA in 2003. In 2004, individual head selections were taken from an F2 population screened at the Syngenta Canada, Inc. breeding nursery in Rosebank, Manitoba. Single seed descent was used to advance these selections through F3 and F4 generations in the greenhouse and in the summer of 2005, F5 head-rows were individually bulked. In 2006, these bulks in the F6 generation were screened and selected from two location observation nurseries in Rosebank and Souris, Manitoba. One of the bulk selections designated '03S2057-1' was selected and tested in research plots during 2007 and 2008. In 2007, eighty heads were picked for initial purity from an F8 (F4 derived) increase plot. During the 2009 to 2011 growing seasons, '03S2057-1' was tested as 'BW918' in the Western Bread Wheat Cooperative trials. In 2011, breeder seed of 'BW918' was produced in Berthoud, Colorado, USA.

Tests & Trials: The trials for 'BW918' were conducted in Rosebank, Manitoba during the summers of 2011 and 2012. The plot size was 1.2 metres wide by 3.0 metres in length, containing 2400 plants per plot. There were 3 replications arranged in an RCB Design. Measured characteristics were based on 20 and 10 measurements in 2011 and 2012 respectively.

Comparison table for '5605HR CL' with reference varieties 'WR859CL' and 'McKenzie'

Plant height (including awns) (cm)

  '5605HR CL' 'WR859CL' 'McKenzie'
2011 mean 104.0 93.4 107.9
2011 std. deviation 2.91 1.9 4.49
2012 mean 97.1 92.2 98.3
2012 std. deviation 2.71 3.09 2.11

Click on image for larger view
5605HR CL
Wheat: 'BW918' (right) with reference varieties 'WR859CL' (centre) and 'McKenzie' (left)

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