841446398

Triticale

Variety Description

Varieties used for comparison: 'AAC Delight', 'Metzger', '641512175' and '934271498'

Summary: The plants of '841446398' are alternative type while the plants of 'AAC Delight' are spring type. The plants of '841446398' head earlier than the plants of 'Metzger' and later than those of 'AAC Delight' and '641512175'. The flag leaf sheath of '841446398' has strong glaucosity while that of '934271498' has medium glaucosity. At anthesis, the flag leaf of '841446398' is shorter than the flag leaf of 'AAC Delight', '641512175' and '934271498'. The culm of '841446398' has very dense pubescence while that of 'Metzger' has a weak to medium density of pubescence, that of '641512175' has strong pubescence and that of '934271498' has a medium density of pubescence. At full stem extension, the plants of '841446398' are taller than the plants of 'AAC Delight', '641512175' and '934271498'. The spike of '841446398' is half awned while that of '934271498' is awnless. The first beak on the lower glume of '841446398' is short to medium in length while the first beak on the lower glume of 'Metzger' is long, that of '641512175' is very short to short and that of '934271498' is very short. The kernel of '841446398' has dark colouration with phenol while the kernel of '641512175' has medium colouration with phenol.

Description:

PLANT: hexaploid, alternative type, erect growth habit at tillering, low frequency of plants with recurved flag leaves at booting, heads mid-season

FLAG LEAF: absent or very weak intensity of anthocyanin colouration of auricles, strong glaucosity of sheath

CULM: straight to slightly curved neck, very dense pubescence
STRAW (STEM): thick pith in cross-section

SPIKE: very strong glaucosity, half awned, slightly coloured at maturity, dense, medium width in profile
AWN: absent or very weak anthocyanin colouration, very short to short
LOWER GLUME: short to medium length first beak, absent or very small second beak, hairs absent on external surface
ANTHERS: absent or very weak intensity of anthocyanin colouration

KERNEL: amber, medium to large, medium length, medium to wide, elliptical shape, dark colouration with phenol

Origin & Breeding History: '841446398' (experimental designation RSI 204719) originated from a cross conducted prior to 2001 between three proprietary lines in the Resource Seeds International Triticale Breeding Program in Woodland California, USA. The first cross was conducted between lines 'XG0696' and '28581 AWNLESS' with a subsequent cross to line 'L762'. The variety was shelved until it was selected for further evaluation in replicated silage trials in Othello, Washington from 2010 to 2016. In 2013, 50 lines were selected and planted in purification headrows and examined for uniformity, plant height, awnlessness and maturity. In 2015, 3 of these lines were selected and planted in progeny plots near Othello, Washington. In 2016, two of the progeny plots were selected based on uniformity and bulked to form breeder seed. '841446398' was selected based on reduced awns, silage yield, grain yield, maturity and standability.

Tests & Trials: The comparative trial for '841446398' was conducted during the 2022 growing season at Ag-Quest in Taber, Alberta. The spring sown trial consisted of 4 aligned replicates. Each plot consisted of 6 rows with a row length of approximately 6 metres with 0.23 metre inter-row spacing and 0.46 metre spacing between the plots. The seeding density was approximately 112kg per hectare resulting in approximately 4600 plants per variety. Measured characteristics were based on 20 measurements per variety. Mean differences were significant at the 5% probability level based on a paired Student's t-test. Results were supported by the official technical examination report 201700389, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '841446398' with reference varieties 'AAC Delight', 'Metzger', '641512175' and '934271498'

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

Flag leaf length (at anthesis) (cm)

Plant height (at full stem extension; including awns) (cm)

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Triticale: '841446398' (centre) with reference varieties '934271498' (left) and 'AAC Delight' (right)

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Triticale: '841446398' (top centre) with reference varieties 'AAC Delight' (top left), '934271498' (top right), 'Metzger' (bottom left) and '641512175' (bottom right)

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Triticale: '841446398' (top centre) with reference varieties 'AAC Delight' (top left), '934271498' (top right), 'Metzger' (bottom left) and '641512175' (bottom right)