SY Torach

Wheat

Variety Description

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

Summary: The anthocyanin colouration of the coleoptile is absent or very weak for 'SY Torach' whereas it is medium to strong for 'McKenzie'. The anthocyanin colouration of the flag leaf auricles is absent or very weak for 'SY Torach' whereas it is weak for 'Glenn'. The flag leaf of 'SY Torach' is longer than that of 'McKenzie' and wider than that of 'Glenn'. At heading, the spike of 'SY Torach' has a medium degree of glaucosity whereas the spike of 'McKenzie' has a weak degree of glaucosity. At maturity, the plants of 'SY Torach' are shorter than those of both reference varieties. The lower glume shoulder for 'SY Torach' is medium to broad and slightly sloping to straight whereas it is narrow to medium in width and elevated for 'Glenn'. The lower glume beak is medium to long and strongly curved for 'SY Torach' whereas it is short and moderately curved for 'McKenzie' and short to medium and moderately curved for 'Glenn'. The lowest lemma beak is straight for 'SY Torach' whereas it is slightly curved for both reference varieties. Anthocyanin colouration on the straw is absent at maturity for 'SY Torach' whereas it is present for 'McKenzie'. The kernel is small for 'SY Torach' whereas it is of medium size for both reference varieties. The kernel weight for 'SY Torach' is greater than that of 'McKenzie'. The kernel is oval for 'SY Torach' whereas it is elliptical in shape for 'McKenzie'.The kernel germ is round for 'McKenzie' whereas it is elliptical for 'McKenzie' and oval to broad elliptical for 'Glenn'. The width of the kernel crease is narrow for ' SY Torach' whereas it is of medium width for 'Glenn'.

Description:

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

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

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

CULM: medium degree of glaucosity, curved neck
STRAW: pith of medium thickness in cross-section, no anthocyanin colouration at maturity

SPIKE: medium degree of glaucosity, tapering, medium to dense, light gold yellow at maturity, erect attitude, absent or very sparse to sparse hairiness of convex surface of apical rachis segment
AWNS: shorter than length of spike, light brown
LOWER GLUME SHOULDER: medium to broad, slightly sloping to straight
LOWER GLUME: medium length and width, glabrous, sparse extent of internal hair
LOWER GLUME BEAK: medium to long, strongly curved shape
LOWEST LEMMA: straight beak

KERNEL: hard red, medium to dark red, small, short, medium width, oval, angular cheek, short brush hairs, narrow and deep crease
GERM: small, round

AGRONOMIC CHARACTERISTICS: good resistance to shattering

BREAD MAKING QUALITY: good

DISEASE REACTIONS: resistant to Leaf rust (Puccinia recondita); moderately resistant to Stem rust (Puccinia graminis f. sp. Tritici) and Fusarium head blight (Fusarium species and specifically Fusarium graminearum); moderately susceptible to Common bunt (Tilletia caries, Tilletia foetida) and Stripe rust (Puccinia striiformis)

INSECT REACTIONS: Susceptible to wheat midge (Sitodiplosis mosellana)

Origin & Breeding History: 'SY Torach' (experimental designations PT650 and 09S2059-20) originated from the cross 'BW874' // 01S2120-40 made in Berthoud, Colorado, USA, in 2009. Individual head selections were made from the F2 population at Syngenta Canada Inc. in Rosebank, Manitoba, in 2010, based on plant height, maturity and disease resistance. Single seed descent technique was used to advance these selections through the F3 and F4 generations in a greenhouse. In 2011, F5 headrows were selected and individually bulked from a nursery at Rosebank, Manitoba and entered into a yield trial in Rosebank Manitoba in 2013. Selections were based on plant height, maturity, disease resistance, protein content and overall worth. One of the selections was designated 09S2059-20 and sent to a winter nursery in New Zealand for generation advancement in 2013. The resulting F8 was entered in Syngenta Canada, Inc. multi-location research plots in 2014. In 2014, 100 heads were selected for initial purity from the F9 increase plots, based on yield, test weight, plant height, maturity, disease resistance and baking and milling quality. Of the100 progeny rows planted in Rosebank, Manitoba, in 2015, 24 rows were selected and progeny plots subsequently planted in Berthoud, Colorado. In 2017, plots were selected and bulked for breeder seed. Selection criteria for the progeny rows and plots were based on agronomic traits, disease resistance and quality. The variety was tested as PT650 in the Parkland Bread Wheat Co-op during the 2015 to 2017 growing seasons.

Tests & Trials: The comparative trials for 'SY Torach' were conducted during the 2017 and 2018 growing seasons near Rosebank, Manitoba. Plots consisted of 7 rows, with a row length of 3 metres and a row spacing of 18 cm. There were 3 replications arranged in an RCB design. Measured characteristics were based on 20 measurements per variety per year, except 1000 kernel weight, which was based on 10 measurements per variety per year. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test. Disease reaction ratings were provided through the Disease Evaluation team of the Prairie Recommending Committee for Wheat, Rye and Triticale and Prairie Grain Development Committee from trials conducted in 2015 to 2017.

Comparison tables for 'SY Torach' with reference varieties 'McKenzie' and 'Glenn'

Flag leaf length (cm)

Flag leaf width (mm)

Plant height (at maturity) (cm)

Kernel weight (grams per 1000 kernels) (g)

Click on image for larger view

Wheat: 'SY Torach' (left) with reference varieties 'Glenn' (centre) and 'McKenzie' (right)

Click on image for larger view

Wheat: 'SY Torach' (left) with reference varieties 'McKenzie' (centre) and 'Glenn' (right)