|Previously Proposed Denomination:||'GP087'|
|Botanical Name:||Triticum aestivum|
Syngenta Canada, Inc.
105 Jefferson Street
Francis Kirigwi, Syngenta Canada, Inc., Morden, Manitoba
|Grant of Rights Date:||2014-12-03|
|Grant of Rights Termination Date:||2032-12-03|
Variety used for comparison: 'McKenzie'
Summary: At the 5 to 9 tiller stage, 'GP087' has an intermediate growth habit whereas it is semi-erect in 'McKenzie'. At booting, the frequency of plants with recurved flag leaves in 'GP087' is high whereas the frequency is low to medium in 'McKenzie'. The flag leaf of 'GP087' is longer than that of 'McKenzie'. The plants of 'GP087' are shorter than those of 'McKenzie'. In cross section, the straw pith of 'GP087' is thin whereas it is medium in thickness in 'McKenzie'. The lower glume of 'GP087' has a narrow to medium shoulder whereas the shoulder is broad in 'McKenzie'. The lower glume of 'GP087' has a long beak that is slightly to moderately curved whereas the beak is short and straight in 'McKenzie'. The kernel of 'GP087' has a broad elliptical shape whereas that of 'McKenzie' has an elliptical shape. The kernel brush hairs of 'GP087' are short whereas they are of medium length in 'McKenzie'.
PLANT: hard red spring type, intermediate growth habit at the 5 to 9 tiller stage, matures mid-season
SEEDLING (4 leaf stage): weak intensity of anthocyanin colouration of the coleoptile, glabrous sheath and blade of the lower leaves
FLAG LEAF: high frequency of plants with recurved flag leaves, medium intensity of anthocyanin colouration of the auricles, medium glaucosity of the sheath, glabrous blade and sheath
CULM NECK: absent to weak glaucosity, curvature present
STRAW: thin pith in cross-section at maturity, no anthocyanin colouration
SPIKE: absent to very weak glaucosity at heading, tapering shape in profile, medium to dense, inclined attitude and brown at maturity, sparse to medium hairiness of convex surface of apical rachis segment
AWNS: brown, shorter than or equal in length to the length of the spike
LOWER GLUME: medium to long, medium to wide, glabrous, sparse extent of internal hairs
LOWER GLUME SHOULDER: narrow to medium width, straight to elevated shape
LOWER GLUME BEAK: long, slightly to moderately curved
LOWEST LEMMA: straight to very slightly curved beak
KERNEL: dark red colour, medium size, short to medium length, medium width, broad elliptical shape, angular cheek shape, short length of brush hairs, medium to wide crease, medium depth of crease
GERM: medium size, round to oval shape
Origin & Breeding History: 'GP087' (experimental designation '05S2024-10') originated from the cross between 'BW361' and 'Alsen', made in Berthoud, Colorado, USA in 2005. In 2006, individual head selections were taken from an F2 population screened for height, maturity and disease resistance 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 2007, F5 head-rows were individually bulked. In 2008, the individual bulks in the F6 generation were screened for agronomic performance and resistance to Leaf Rust, Leaf Disease Complex and Fusarium Head Blight and selected from nurseries in Rosebank and Souris, Manitoba. One of the bulk selections designated '05S2024-10' was selected and tested in research plots in 2009. During the 2010 to 2012 growing seasons, '05S2024-10' was tested as 'GP087' in the General Purpose Wheat Cooperative trials for agronomic performance, disease resistance and quality parameters.
Tests & Trials: The trials for 'GP087' were conducted in Rosebank, Manitoba during the summers of 2012 and 2013. Plots consisted of 7 rows spaced 18 cm apart. The plot size was approximately 1.2 metres wide by 3.0 metres in length, containing 2400 plants per plot. There were 3 replications arranged in a RCB design. In 2012 and 2013, the measured characteristics were based on 20 measurements with the exception of 10 plant height measurements taken in 2012.
Comparison tables for 'SY087' with reference variety 'McKenzie'
Flag leaf length (cm)
|std. deviation 2012||2.2||2.2|
|std. deviation 2013||3.1||2.6|
Plant height (including awns) (cm)
|std. deviation 2012||1.6||2.1|
|std. deviation 2013||4.2||4.9|
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