AAC Dutton

Wheat

Variety Description

Varieties used for comparison: 'AAC LeRoy' and 'Cardale'

Summary: The coleoptile of 'AAC Dutton' has a very strong intensity of anthocyanin colouration whereas that of 'AAC LeRoy' has a weak intensity of anthocyanin colouration. At booting, the flag leaf sheath of 'AAC Dutton' has a weak to medium degree of glaucosity whereas those of the reference varieties have strong glaucosity. The lower side of the flag leaf blade of 'AAC Dutton' has medium glaucosity whereas those of the reference varieties have strong glaucosity. The plants of 'AAC Dutton' head earlier than those of 'Cardale'.

Description:

PLANT: spring type, common wheat, semi-erect to intermediate growth habit at 5 to 9 tiller stage

SEEDLING (4-LEAF STAGE): very strong anthocyanin colouration of coleoptile

FLAG LEAF: weak to medium glaucosity of sheath at heading, medium glaucosity of lower side of leaf blade

STRAW (AT MATURITY): pith of thin to medium thickness in cross-section

SPIKE: weak to medium glaucosity at heading, tapering in profile, dense, brown at maturity
AWNS: equal to or longer than spike length

KERNEL: hard red type, dark red

DISEASE REACTIONS: resistant to Leaf rust (Puccinia triticina) and Stem rust (Puccinia graminis); moderately resistant to Fusarium head blight (Fusarium graminearum) and Stripe rust (Puccinia striiformis)

INSECT REACTION: resistant to Orange Wheat Blossom Midge (Sitodiplosis mosellana)

Origin & Breeding History: 'AAC Dutton' (experimental designations BW1094, BS402 and BL45*D0278) originated from the cross between BW486 and 'Cardale' conducted at the Agriculture and Agri-Food Canada Cereal Research Centre in 2011 in Winnipeg, Manitoba. Double haploid lines were created from the resulting F1 in 2013 at the Agriculture and Agri-Food Canada Research and Development Centre in Morden, Manitoba. From 2013 to 2014, 200 lines were grown as hill plots in Leeston, New Zealand and at Greenhouse Inc. with a loss due to flooding at the field nursery. 122 lines were increased in Leeston, New Zealand in rows with subsequent testing in Saskatoon, Saskatchewan in 2015. Selection criteria included plant height, lodging resistance, maturity, yield, test weight and thousand kernel weight, disease resistance to leaf rust, stem rust, Fusarium head blight, and common bunt and quality traits such as protein content, falling number, flour yield, and baking quality. In 2016, 25 lines were tested as BS402, with 10 lines tested in the Central Bread Wheat 'A' test in 2017, and 4 lines tested in the Central Bread Wheat 'B' test in 2018. The line designated as BL45*D0278 was tested in Central Bread Wheat 'C' registration tests as BW1094 from 2019 to 2021. Breeder seed production commenced in 2021 at the Agriculture and Agri-Food Canada Seed Increase Unit, Indian Head, Saskatchewan.

Tests & Trials: The comparative trials for 'AAC Dutton' were conducted at the Saskatoon Research and Development Centre in Saskatoon, Saskatchewan in 2021 and 2022. There were 3 replicates per variety arranged in an RCB design. Plots were 2.98 square metres, and consisted of 5 rows, 3.35 metres in length, with a row spacing of 18 cm. The planting density was 264 plants per square metre resulting in approximately 3000 plants per variety per year. Disease and insect reaction ratings were obtained from the Prairie Grain Development Committee assessed from 2019 to 2021.

Comparison table for 'AAC Dutton' with reference varieties 'AAC LeRoy' and 'Cardale'

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

Click on image for larger view

Wheat: 'AAC Dutton' (left) with reference varieties 'AAC LeRoy' (centre) and 'Cardale' (right)