Sibia

Wheat

Variety Description

Varieties used for comparison: 'AAC Harlaka', 'AAC Maurice' and 'Raven'

Summary: At booting, the flag leaf auricles of 'Sibia' have an absent or very weak intensity of anthocyanin colouration while those of 'AAC Harlaka' have a strong intensity of anthocyanin colouration. The flag leaf of 'Sibia' is narrower than the flag leaves of 'AAC Harlaka' and 'Raven'. The flag leaf sheath of 'Sibia' has medium glaucosity while that of 'AAC Harlaka' has strong glaucosity. The plants of 'Sibia' head later than the plants of 'AAC Harlaka' and 'AAC Maurice'. At heading, the plants of 'Sibia' are taller than those of 'AAC Maurice'. The spike of 'Sibia' has an erect to inclined attitude while the spike of 'AAC Maurice' has an inclined to nodding attitude. The convex surface of the apical rachis segment for 'Sibia' has sparse hairs while that of 'AAC Harlaka' has absent or very sparse hairs. The lower glume shoulder of 'Sibia' is narrow while the lower glume shoulder of 'AAC Harlaka' is of medium width. The lower glume shoulder of 'Sibia' is elevated while the lower glume shoulder of 'AAC Maurice' is sloping and that of 'Raven' is slightly sloping. The lower glume beak of 'Sibia' is long to very long while the lower glume beak of 'Raven' is medium to long.

Description:

PLANT: spring type, common wheat, semi-erect growth habit at 5 to 9 tiller stage, low to medium 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, medium glaucosity of sheath
STRAW (AT MATURITY): thin pith in cross-section

SPIKE: weak glaucosity at heading, tapering shape in profile, lax to medium density, white at maturity, erect to inclined attitude, sparse hairiness of convex surface of apical rachis segment
AWNS: shorter than length of spike, white at maturity
LOWER GLUME: pubescent
LOWER GLUME SHOULDER: narrow, elevated
LOWER GLUME BEAK: long to very long, straight to slightly curved

KERNEL: medium red, short brush hairs

GERM: medium to large, crease of medium depth

Origin & Breeding History: 'Sibia' (experimental designations CFB1708 and C1M17172) originated from a cross between 'Volt' and 'Taifun' with a subsequent cross to 'Glenn' conducted in 2009 at Schwaebisch Hall, Germany. The F1 and F2 generations were increased and single F3 plant selections in 2012 were planted in F4 headrows in 2013. In 2014, selected F4 lines were grown as 2.5 metre squared plots. The F5 selections were assessed for yield in Germany in 2015 and F6 selections assesed for yield simultaneously in Germany and in Ontario and Quebec, Canada in 2016. Twenty single F7 plants were selected in Quebec and the F8 generation was further advanced into evaluation trials in Quebec. Breeder seed was established in 2018 based on controlled single F9 plant progenies and was tested in the registration trials in Quebec in 2018-2019. Selection criteria included straw strength, plant maturity, yield, disease resistance and quality traits.

Tests & Trials: The comparative trials for 'Sibia' were conducted at La Coop Fédérée Research Farm in Saint-Hyacinthe, Quebec in 2020 and 2021. There were 4 replicates per variety arranged in an RCB design. In 2020, the size of the plots were 5 square metres and consisted of seven 5 m long rows spaced 0.18 m apart. In 2021, the size of the plots were 6 square metres and consisted of seven 4.5 m long rows spaced 0.18 m apart. The seeding density was 375 seeds per metre squared resulting in a minimum of 6500 plants per variety per year. Measured characteristics were based on 20 measurements per variety per year. Mean differences were significant at the 5% probability level based on a Tukey test.

Comparison tables for 'Sibia' with reference varieties 'AAC Harlaka', 'AAC Maurice' and 'Raven'

Flag leaf width (at booting) (mm)

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

Plant height (at maturity) (including awns) (cm)

Click on image for larger view

Wheat: 'Sibia' (top left) with reference varieties 'Raven' (top right), 'AAC Harlaka' (bottom left) and 'AAC Maurice' (bottom right)