946802617

Triticale

Variety Description

Variety used for comparison: 'Pika'

Summary: The plants of '946802617' head earlier than the plants of 'Pika'. At anthesis, the flag leaf of '946802617' is shorter and narrower than the flag leaf of 'Pika'. The culm of '946802617' has a medium density of pubescence while that of 'Pika' has sparse pubescence. At full stem extension, the plants of '946802617' are shorter than the plants of 'Pika'. The first beak on the lower glume of '946802617' is long while that of 'Pika' is very long. The external surface of the lower glume of '946802617' has hairs while that of 'Pika' is hairless. Excluding the awns, the spike of '946802617' is shorter than that of 'Pika'.

Description:

PLANT: hexaploid, winter type, erect growth habit at tillering, high frequency of plants with recurved flag leaves at booting, heads early in the season

COLEOPTILE: absent or very weak intensity of anthocyanin colouration

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

CULM: straight to slightly curved neck, medium density of pubescence
STRAW (STEM): thick pith in cross-section

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

KERNEL: amber, small to medium size, short, medium to wide, oval shape, dark colouration with phenol

Origin & Breeding History: '946802617' (experimental designations KS-154, 154E and 154) originated from the cross conducted prior to 1998, between 'OCTO NV' and 'DRIRA/KGR' with a subsequent cross to 'MUS'S'/LYNX's' in the Resource Seeds International Triticale Breeding Program in Woodland California, USA. Resulting from this cross, the line KS-154 was originally selected and developed as a parental line. In 1998, the line 154E was reselected based on plant height and maturity and tested from 1999 to 2000 in Kansas, USA and selected as a hybrid parental line based on maturity and grain yield. After a period of being shelved, the line was assessed in grain silage and grazing tests as 154 in Texas, Kansas, Arkansas, Pennsylvania and New York, USA from 2010 to 2015. Simultaneously, 80 selected heads were planted in 2011 as headrows in Vernon, Texas, from which 40 selections were subsequently grown as progeny plots in Berthoud, Colorado in 2013. Further advancement and selections resulted in the establishment of breeder seed in Berthoud, Colorado in 2015. '946802617' was selected based on winter hardiness, silage yield and maturity.

Tests & Trials: The comparative trial for '946802617' was conducted during the 2022 growing season at Ag-Quest in Taber, Alberta. The fall 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 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 201600410, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '946802617' with reference variety 'Pika'

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

Flag leaf length (at anthesis) (cm)

Flag leaf width (at anthesis) (cm)

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

Spike length (excluding awns) (cm)

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Triticale: '946802617' (right) with reference variety 'Pika' (left)

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Triticale: '946802617' (left) with reference variety 'Pika' (right)

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Triticale: '946802617' (left) with reference variety 'Pika' (right)