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HY 174-OA


Denomination: 'HY 174-OA'
Previously Proposed Denomination: 'OA1174-3'
Botanical Name: Avena sativa
Applicant/Holder: Agriculture & Agri-Food Canada, Ottawa
Ottawa Research and Development Centre
Room 1093A - 960 Carling Avenue
Ottawa, Ontario
K1A 0C6
Breeder: Weikai Yan, Agriculture & Agri-Food Canada, Ottawa, Ontario
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Tel: (306) 385-9316
Application Date: 2010-03-16
Application Number: 10-6887
Grant of Rights Date: 2013-10-03
Certificate Number: 4642
Date rights surrendered: 2019-10-03

Variety Description

Varieties used for comparison: 'Aylmer' and 'Goslin'

Summary: 'HY 174-OA' has absent to very sparse pubescence on the margins of the leaves while it is sparse for 'Goslin'. The frequency of plants with recurved flag leaves in 'HY 174-OA' is low while it is medium for 'Goslin'. 'HY 174-OA' has a shorter flag leaf than 'Aylmer' and 'Goslin'. The plant height of 'HY 174-OA' is taller than the reference varieties. 'HY 174-OA' has poor lodging resistance while it is fair for 'Aylmer'. 'HY 174-OA' is moderately resistant to crown rust (Puccinia coronata) and leaf blight (Septoria avenae f. sp. avenae) while the reference varieties are moderately susceptible to both.


PLANT: covered type, spring type, erect juvenile growth habit, absent or very sparse pubescence on lower leaf sheath, absent or very sparse pubescence on lower leaf blade, low frequency of recurved flag leaves, sparse to medium pubescence of the stem above and below the upper culm node

LEAF: medium green, absent or very sparse pubescence of margin, medium glaucosity

PANICLE: equilateral orientation, medium density, semi-erect attitude of branches, 0-45 degree angle between dominant side branch and rachis, few hairs or spines on lowest node
GLUME: medium glaucosity
LEMMA: weak glaucosity, medium extent of lateral overlap on palea, white colour at maturity, absent or very sparse pubescence on lateral and dorsal surface, absent or very weak tendency to be awned
SPIKELET: erect to semi-erect attitude, 2-3 grains
RACHILLA: medium length between primary and secondary floret, absent or very short grooves, sparse pubescence
KERNEL: no basal hairs, cream colour
SCUTELLUM: pointed, medium sized
GROAT: medium pubescence

AGRONOMICS: poor lodging resistance

DISEASE REACTION: moderately resistant to Crown rust (Puccinia coronata), moderately resistant to Leaf blight (Septoria avenae f. sp. avenae)

Origin & Breeding History: 'HY 174-OA' (experimental designation OA1174-3) is a white-hulled covered oat variety developed using the modified Single Seed descent method from the final cross made in March of 2000. The pedigree is Ida / 06909-3-94, where 06909-3-94 is an Eastern Cereal & Oilseeds Research Centre breeding line from the cross of Aylmer / Goslin. The selection criteria included high yield and good groat percentage.

Tests & Trials: Trials were conducted during the 2010 and 2011 growing seasons at the Agriculture & Agri-Food Canada Eastern Cereal Oilseed Research Centre on the Central Experimental Farm, Ottawa, Ontario. Plots consisted of 4 rows with a row length of 3.6 meters and a row spacing of 23cm. There were 3 replicates.

Comparison tables for 'HY 174-OA' with reference varieties 'Aylmer' and 'Goslin'

Flag leaf length (cm)

  'HY 174-OA' 'Aylmer' 'Goslin'
mean 15.6 18.1 19.0
std. deviation 2.1 1.9 2.9

Plant height (cm)

  'HY 174-OA' 'Aylmer' 'Goslin'
mean 137.5 123.8 121.0
std. deviation 10.94 7.75 4.1

Click on image for larger view
HY 174-OA
Oat: 'HY 174-OA' (centre) with reference varieties 'Alymer' (left) and 'Goslin' (right)

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