AAC Redstar

Wheat

Variety Description

Varieties used for comparison: 'AAC Redwater' and 'CDC Plentiful'

Summary: The intensity of anthocyanin colouration on the coleoptile of 'AAC Redstar' is weak whereas it is absent or very weak for 'AAC Redwater'. The spike of 'AAC Redstar' has awns present whereas that of 'CDC Plentiful' has awnlets present at the tip. The lower glume shoulder shape is slightly sloping for 'AAC Redstar' whereas it is straight for 'CDC Plentiful'. The lower glume beak is of medium length for 'AAC Redstar' whereas it is very short to short for 'CDC Plentiful'. The kernel shape is elliptical for 'AAC Redstar' whereas it is oval for 'AAC Redwater' and broad elliptical for 'CDC Plentiful'.

Description:

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

SEEDLING (4 LEAF STAGE): weak intensity of anthocyanin colouration of coleoptile, glabrous sheath and blade of lower leaves

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

CULM: medium degree of glaucosity
STRAW (AT MATURITY): medium thickness of pith in cross section

SPIKE: medium to strong degree of glaucosity at heading, parallel sided to semi-clavate shape in profile, medium density, yellow to light brown at maturity, erect attitude
AWNS: shorter or equal to spike length, light brown at maturity
LOWER GLUME: medium to long, narrow to medium width, glabrous, absent or very sparse to sparse extent of internal hairs
LOWER GLUME SHOULDER: medium to wide, slightly sloping shape
LOWER GLUME BEAK: medium length, slightly curved shape

KERNEL: hard red type, medium red, medium to large, medium length and width, elliptical shape, angular cheek, medium length brush hairs, narrow to medium width, medium depth of crease
GERM: medium size, oval shape

AGRONOMIC CHARACTERISTICS: good resistance to shattering, good resistance to pre-harvest sprouting

BREAD MAKING QUALITY: good

Origin & Breeding History: 'AAC Redstar' (experimental designations 09B12-FJ2D and PT488) originated from the cross between 'AAC Redwater' and 'CDC Plentiful' made in 2009 at the Cereal Research Centre of Agriculture and Agri-Food Canada in Morden, Manitoba. At the Beaverlodge Research Station in Alberta, the F1 generation was increased in a greenhouse in 2009 and the F2 generation was increased in field plots in 2010. In 2010-2011, 169 F3 lines were grown as hills near Palmerston North, New Zealand. In 2011, F4 lines were grown at the Beaverlodge Research Station and F5 lines were grown in Palmerston North. Selections were based on agronomic characteristics, seed appearance, disease resistances and quality traits. From 2012 to 2015, yield tests and selections for agronomic characteristics, disease resistance and quality were conducted. In 2015, a selected F10 line, designated as 09B12-FJ2D, was advanced and evaluated in the Parkland Wheat Cooperative 'B' test at various locations throughout western Canada. In 2016, the line was designated 'PT488' and was entered in the Parkland Wheat Cooperative 'C' test where it was evaluated from 2016 to 2018.

Tests & Trials: The comparative trials for 'AAC Redstar' were conducted at the Agriculture and Agri-Food Canada Saskatoon Research and Development Centre in Saskatoon, Saskatchewan during the 2018 and 2019 growing seasons. Plots consisted of three replications arranged in a RCB design with each plot consisting of 5 rows with a row length of 3.35 metres and row spacing of 18 cm.

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Wheat: 'AAC Redstar' (left) with reference varieties 'AAC Redwater' (centre) and 'CDC Plentiful' (right)

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Wheat: 'AAC Redstar' (left) with reference varieties 'AAC Redwater' (centre) and 'CDC Plentiful' (right)