Denomination: '5702PR'
Previously Proposed Denomination: 'HY977'
Botanical Name: Triticum aestivum
Applicant/Holder: Syngenta Canada, Inc.
105 Jefferson Street
Morden, Manitoba
R6M 0B8
Breeder: Francis Kirigwi, Syngenta Canada, Inc., Morden, Manitoba
Application Date: 2007-03-07
Application Number: 07-5786
Grant of Rights Date: 2010-02-17
Certificate Number: 3768
Grant of Rights Termination Date: 2028-02-17

Variety Description

Variety used for comparison: '5700PR'

Summary: '5702PR' is taller than '5700PR'. The flag leaf of '5702PR' is narrower than '5700PR'. '5702PR' has a lower frequency of plants with recurved/drooping flag leaves than '5700PR'. The auricle of the flag leaf of '5702PR' has weaker anthocyanin colouration than '5700PR'.


PLANT: spring type, semi-erect growth habit
SEEDLING: absent or very weak intensity of anthocyanin colouration of coleoptile, absent or very weak pubescence on lower leaf sheaths, absent or very weak pubescence on lower leaf blades

FLAG LEAF: high frequency of plants with recurved/drooping flag leaves, glabrous blades and sheaths, absent or very weak anthocyanin colouration of auricles, weak glaucosity of sheath

CULM NECK: absent or very weak glaucosity, very weak to weak curvature
STRAW: thin pith in cross section, no anthocyanin colouration at maturity

SPIKE: tapering shape, lax to medium density, erect at maturity, very weak to weak glaucosity, white at maturity, light brown to white awns present, awns long in relation to length of spike, medium to slightly spreading awn attitude, sparse hairiness of convex surface of apical segment
LOWER GLUME: medium in width, short to medium length, weak pubescence, slightly sloping shape of shoulder, narrow shoulder width, straight long beak, sparse internal hairs

KERNEL: hard red type, dark red colour, large kernel, midlong to long, medium width, elliptical shape, rounded cheek shape, midlong to long brush hairs, small germ, round to broad elliptical shape of germ, midwide and shallow to mid-deep crease

AGRONOMICS: fair resistance to shattering, poor pre-harvest sprouting

DISEASE RESISTANCE: susceptible to Common root rot (Cochliobolus sativus Fasarium species) and Fusarium head blight (Fusarium graminearum Fusarium species), moderately susceptible to Black point and smudge (Cochliobolus sativus Alternaria species Pseudomonas syrange pv. atrofaciens) and Septoria tritici blotch (Septoria tritici), moderately resistant to moderately susceptible to Leaf rust (Puccinia triticina), moderately resistant to Septoria nodorum blotch (Septoria nodorum) and Common bunt (Tilletia caries, Tilletia foetida)

Origin & Breeding History: '5702PR' (experimental designation HY977) originated from the cross HY437/3/Russ//Sumai#3/Dalen made in 1998 in Berthoud, Colorado, USA. Individual head selections were made from an F2 population of this cross at an AgriPro breeding nursery at Rosebank, Manitoba in 1999. Single seed descent was used to advance these selections through the F3 and F4 generations in the greenhouse. In 2000, F5 headrows were individually bulked from a selection nursery at Rosebank, Manitoba. These bulks were screened and selected from a four location observation nursery in 2001. One of the selections was designated 99S3088-05 and tested in the Proven Seed Research plots in 2002 and 2003. It was tested in the High Yielding Wheat Co-op trials as HY977 during the 2004-2006 seasons.

Tests & Trials: Tests and trials were conducted during the summers of 2006 and 2007 in Rosebank, Manitoba. Plot size was 4.0 metres x 1.2 metres with 5 rows per plot. There were 4 replicates arranged in a RCB design.

Comparison tables for '5702PR' with reference variety '5700PR'

Plant height (cm)

  '5702PR' '5700PR'
mean 2006 94.1 88.9
std. deviation 1.02 1.02
mean 2007 88.8 81.9
std. deviation 1.2 0.97

Flag leaf width (mm)

  '5702PR' '5700PR'
mean 2006 12.4 16.0
std. deviation 0.81 0.79
mean 2007 12.2 15.0
std. deviation 0.81 0.69

Click on image for larger view
Wheat: '5702PR' (right) with reference variety '5700PR' (left)

Click on image for larger view
Wheat: '5702PR' (left) with reference variety '5700PR' (right)

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