SY Donald

Wheat

Variety Description

Variety used for comparison: 'Glenn'

Summary: At booting, the flag leaf auricles of 'SY Donald' have an absent or very weak intensity of anthocyanin colouration while the flag leaf auricles of 'Glenn' have a strong intensity of anthocyanin colouration. The flag leaf sheath of 'SY Donald' has absent or very weak glaucosity while the flag leaf sheath of 'Glenn' has weak glaucosity. The plants of 'SY Donald' head later than the plants of 'Glenn'. The culm neck of 'SY Donald' has weak glaucosity while that of 'Glenn' has medium glaucosity. At maturity, the spike of 'SY Donald' has an erect attitude while the spike of 'Glenn' has an inclined attitude. The spike of 'SY Donald' has white awns while the spike of 'Glenn' has light brown awns. The lower glume of 'SY Donald' is short with a slightly sloping shoulder while the lower glume of 'Glenn' is of medium length with an elevated shoulder. The kernel weight of 'SY Donald' is less than the kernel weight of 'Glenn'.

Description:

PLANT: spring type, common wheat, erect growth habit at 5 to 9 tiller stage, low frequency of plants with recurved flag leaves, heads mid-season, matures mid-season

SEEDLING (4-leaf stage): glabrous sheath and blade of lower leaves

FLAG LEAF: absent or very weak intensity of anthocyanin colouration of auricles, absent or very weak glaucosity of sheath, glabrous blade and sheath

CULM: weak glaucosity, curved neck
STRAW: thin pith in cross-section, no anthocyanin colouration at maturity

SPIKE: weak glaucosity at heading, tapering shape in profile, medium density, brown at maturity, erect attitude, absent or very sparse hairiness of convex surface of apical rachis segment
AWNS: shorter than spike, white at maturity
LOWER GLUME: short, medium to wide, glabrous, sparse internal hairs
LOWER GLUME SHOULDER: medium to broad, slightly sloping
LOWER GLUME BEAK: short to medium in length, slightly curved
LOWEST LEMMA: slightly curved beak

KERNEL: hard red, medium red, medium in size, medium length, narrow to medium width, elliptical, rounded cheek, short brush hairs
GERM: medium sized, oval, narrow crease of medium depth

AGRONOMIC TRAITS: good bread making quality

Origin & Breeding History: 'SY Donald' (experimental designations BW5055 and CS12200342-2) originated from a cross between 08S2074-5 and 07S2055-16 conducted in Berthoud, Colorado in 2012. F2 head selections were made at the Syngenta Canada Inc. breeding nursery in Rosebank, Manitoba in 2013 with single seed descent technique used to advance the selections through the F3 and F4 generations in a greenhouse. In 2014, F5 headrows were individually bulked and entered into a yield trial in Rosebank, Manitoba in 2015. One of the bulk selections designated CS12200342-2 was advanced and increased in a winter nursery in New Zealand in 2015-2016 and entered in Syngenta Canada Inc. multiple location research plots in 2016. The new variety was tested in the Western Bread Wheat Coop during the 2017 to 2019 seasons as BW5055. In 2020, 17 F4:12 plots were bulked in Eaton, Colorado to establish breeder seed. Selection criteria included plant height, plant maturity, disease resistance, protein content, yield, test weight and comprehensive milling and baking quality.

Tests & Trials: The comparative trials for 'SY Donald' were conducted at the Syngenta Canada Inc., Rosebank Research Farm in Rosebank, Manitoba in 2019 and 2021. There were 3 replicates per variety arranged in an RCB design. Plots consisted of 7 rows, each row was 3.0 metres long with 0.18 metre inter-row spacing. The seeding density was 645 seeds per squared metre, resulting in approximately 7200 plants per variety per year. Measured characteristics were based on a minimum of 20 measurements per variety per year. Mean differences were significant at the 5% probability level based on a paired Student's t-test.

Comparison tables for 'SY Donald' with reference variety 'Glenn'

Days to heading (days from planting to when 50% of heads are fully emerged from boot)

Kernel weight (grams per 1000 kernels)

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Wheat: 'SY Donald' (left) with reference variety 'Glenn' (right)

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Wheat: 'SY Donald' (right) with reference variety 'Glenn' (left)

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Wheat: 'SY Donald' (right) with reference variety 'Glenn' (left)