Stride

Oat

Denomination: 'Stride'
Previously Proposed Denomination: 'OT2069'
Botanical Name: Avena sativa
Applicant/Holder: Agriculture & Agri-Food Canada, Winnipeg
Cereal Research Centre
195 Dafoe Road
Winnipeg, Manitoba
R3T 2M9
Canada
Breeder: Jennifer Mitchell Fetch, Agriculture & Agri-Food Canada, Winnipeg, Manitoba
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
6000 C&E Trail
Lacombe, Alberta
T4L 1W1
Canada
Tel: (403) 782-8126
Application Date: 2011-04-29
Application Number: 11-7271
Grant of Rights Date: 2013-02-11
Certificate Number: 4460
Grant of Rights Termination Date: 2031-02-11

Variety Description

Varieties used for comparison: 'Pinnacle' and 'Leggett'

Summary: The plants of 'Stride' are taller and have longer panicles than those of 'Leggett'. 'Stride' has a lighter 1000 kernel weight than both reference varieties. 'Stride' is resistant to two races of crown rust (Puccinia coronata), LRGB (CR254) and NTGG (CR258), whereas 'Pinnacle' is susceptible to both races.

Description:

SEEDLING (5-9 tiller stage): spring oat, erect to semi-erect growth habit as juvenile, very sparse to dense pubescence of lower leaf sheath, absent to very sparse pubescence of lower leaf blade

LEAF (at booting stage): medium green, absent to sparse pubescence of margin, weak to moderate intensity of glaucosity at green stage, absent to low frequency of plants with recurved flag leaves

CULM: sparse to dense hairiness above and below upper node

PANICLE (shortly after heading): medium density, ranging from 30 to more than 45 degree angle between rachis and dominant side branch, no hairs or spines on the lowest node
PANICLE BRANCHES: equilateral/symmetrical orientation, semi-erect to horizontal attitude
SPIKELET: medium glaucosity of glumes, fracture type separation of lower florets, nodding attitude
RACHILLA: medium length between primary and secondary florets, very short to long grooves, no pubescence
LEMMA: weak glaucosity, medium sized lateral overlap on palea, white at maturity, absent or very sparse pubescence on lateral and dorsal surfaces, absent or very weak tendency to be awned

KERNEL (primary kernels from upper spikelets): hulled, basal hairs may be absent or present, when present basal hairs are short, white, two per spikelet, pointed to rounded scutellum tip, medium sized scutellum, medium density of pubescence on groat

AGRONOMIC CHARACTERISTICS: fair to good lodging resistance, day length sensitive, 16.2% protein content, 7.9% lipid content, 5.3% gum (betaglucan) content

DISEASE RESISTANCE: resistant to Black loose smut (Ustilago avenae) races A13, 60 and 617, Covered smut (Ustilago kolleri); and Crown rust (Puccinia coronata) races LRGB (CR254) and NTGG (CR258), moderately resistant to Fusarium head blight (Fusarium spp.), susceptible to Barley yellow dwarf virus, and highly susceptible to Crown rust (Puccinia coronata) race BRBG-94 (CR257)

Origin & Breeding History: 'Stride' (experimental designation 'OT2069') is a white hulled, spring oat variety that originated from a cross made at Agriculture and Agri-Food Canada's Cereal Research Centre (CRC) in Winnipeg, Manitoba. During the fall of 2003, the cross was made between two high yielding 'Pinnacle' sibs postulated to carry crown rust resistance genes 'Pc94' and 'Pc96'. During the winter of 2004, 10 of the 23 seeds produced from the cross were increased in the greenhouses at the Cereal Research Centre. From 2004 to 2008, continuous selections were made at a number of winter and summer nurseries where plants with acceptable height, early maturity, and resistance to lodging, smut, oat crown rust and oat stem rust were selected. At each filial generation, plump seed with no awns and white hulls were selected. In 2009, 220 rows were planted in isolation at Portage la Prairie in Manitoba. 212 uniform lines were selected and planted as progeny line breeder plots in 2010 at Indian Head in Saskatchewan. From these, 208 lines were selected for their uniformity and constituted the breeder seed.

Tests & Trials: Tests and trials for 'Stride' were conducted at Agriculture and Agri-Food Canada's plots located at the Manitoba Crop Development Centre in Portage la Prairie, Manitoba, during the summers of 2010 and 2011. The size of the plots was 3.25 square metres and consisted of 5 experimental rows with 2 winter wheat guard/border rows. Each row was 4.27 metres long and the rows were spaced 15.24 cm apart. The varieties were planted in 4 replications with an approximate plant density of 1200 plants per variety per plot.


Comparison tables for 'Stride' with reference varieties 'Pinnacle' and 'Leggett'

Plant height (including panicle) (cm)

  'Stride' 'Pinnacle' 'Leggett'
mean 116.10 116.38 110.65
std. deviation 9.170 7.804 8.123

Panicle length (cm)

  'Stride' 'Pinnacle' 'Leggett'
mean 19.34 19.81 17.14
std. deviation 1.525 1.147 1.449

Kernel weight (grams per 1000 kernels)

  'Stride' 'Pinnacle' 'Leggett'
2010 28.9 31.0 31.2
2011 30.5 31.4 33.4

Click on image for larger view
Stride
Oat: 'Stride' (center) with reference varieties 'Pinnacle' (left) and 'Leggett' (right)

Click on image for larger view
Stride
Oat: 'Stride' (center) with reference varieties 'Pinnacle' (left) and 'Leggett' (right)

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