AAC LeRoy

Wheat

Variety Description

Varieties used for comparison: 'Carberry' and 'Vesper'

Summary: The anthocyanin colouration of the coleoptile is of medium intensity for 'AAC LeRoy' whereas it is absent or very weak for 'Carberry' and 'Vesper'. At booting, the auricles of the flag leaf of 'AAC LeRoy' have a strong intensity of anthocyanin colouration whereas the intensity is absent or very weak for 'Carberry' and weak for 'Vesper'. The lower glume of 'AAC LeRoy' has a medium to long beak whereas the lower glume of 'Vesper' has a short beak.

Description:

PLANT: common hard red spring type, intermediate between semi-erect and semi-prostrate growth habit at 5 to 9 tiller stage, medium frequency of plants with recurved flag leaves

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

FLAG LEAF: strong intensity of anthocyanin colouration of auricles, strong glaucosity of sheath, glabrous blade and sheath

CULM: medium glaucosity, curved neck
STRAW (AT MATURITY): thin pith in cross-section

SPIKE: medium to strong glaucosity at heading, tapering to parallel sided in profile, lax to medium density, light to medium yellow at maturity, erect attitude, absent or very sparse hairiness of convex surface of apical rachis segment
AWNS: shorter than or equal to spike length
LOWER GLUME: long, medium to wide, glabrous, medium extent of internal hairs
LOWER GLUME SHOULDER: narrow to medium width, slightly sloping to straight shape
LOWER GLUME BEAK: medium to long, slightly curved shape
LOWEST LEMMA: straight beak

KERNEL: medium to dark red, medium to large, medium length, narrow to medium width, oval shape, rounded cheek, medium length brush hairs, medium width and depth of crease
GERM: medium sized from dorsal view, oval shape

AGRONOMIC CHARACTERISTICS: fair resistance to pre-harvest sprouting

BREAD MAKING QUALITY: fair

Origin & Breeding History: 'AAC LeRoy' (experimental designations BW1049 and BH11A-NP-162-NPNG-13-N) originated from a cross made between BW431 and BW874 in 2008 at the Cereal Research Centre of Agriculture and Agri-Food Canada in Morden, Manitoba. In 2008-2009, F1 plants were grown in short rows at the winter nursery near Leeston, New Zealand. In 2009, F2 plots were grown near Portage la Prairie, Manitoba and 250 spikes were harvested. In 2009, 169 F3 rows were grown as hills near Palmerston North, New Zealand. In 2010, 49 F4 lines, grown in 1 metre rows in Portage la Prairie, Manitoba, were selected based on agronomic characteristics, seed appearance, disease resistances and quality traits. From 2011 to 2014, yield tests and selections for agronomic characteristics, disease resistance and quality were conducted. A selected line was advanced and evaluated in the Central Bread Wheat 'A' tests in 2013 and 'B' tests in 2014 at various locations throughout western Canada. From 2015 to 2017, the line designated as BW1049, was included in the Central Bread Wheat 'C' registration trials.

Tests & Trials: The comparative trials for 'AAC LeRoy' were conducted at the Agriculture and Agri-Food Canada Saskatoon Research and Development Centre in Saskatoon, Saskatchewan during the 2017 and 2018 growing seasons. Plots consisted of 5 rows with a row length of 3.35 m and a row spacing of 18 cm. There were three replications arranged in a RCB design. Measured characteristics were based on a minimum of 21 measurements per variety per year.

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Wheat: 'AAC LeRoy' (right) with reference varieties 'Vesper' (centre) and 'Carberry' (left).