CDC Sol-Fi

Oat

Variety Description

Varieties used for comparison: 'Morgan', 'CDC Dancer' and 'Hi-Fi'

Summary: 'CDC Sol'Fi' has sparser lower leaf sheaf pubescence than 'Morgan' and 'CDC Dancer'. The pubescence on the lower leaf blade and leaf margins of 'CDC Sol-Fi' is sparser than in 'Morgan'. 'CDC Sol-Fi' has a slightly longer flag leaf than 'CDC Dancer'. The upper culm node of 'CDC Sol-Fi' has denser pubescence than 'Hi-Fi'. 'CDC Sol-Fi' heads later than 'Hi-Fi'. The plant height at heading of 'CDC Sol-Fi' is taller than the reference varieties. 'CDC Sol-Fi' has fewer number of hairs or spines on the lowest panicle node than 'Hi-Fi'. The length of the hairs or spines on the lowest panicle node of 'CDC Sol-Fi' are shorter than in 'CDC Dancer' and 'Hi-Fi'. 'CDC Sol-Fi' has a longer rachilla length between the primary and secondary floret than 'Hi-Fi'. The lemma glaucosity at the green stage in 'CDC Sol-Fi' is weaker than in 'CDC Dancer'. 'CDC Sol-Fi' has a yellow to light brown kernel colour while it is a creme to yellow colour in 'Morgan' and 'CDC Dancer'. The scutellum of 'CDC Sol-Fi' is larger than in 'Morgan'. 'CDC Sol-Fi' has denser groat pubescence than 'CDC Dancer'.

Description:

PLANT: spring type, intermediate juvenile growth habit at the 5-9 tiller stage, very sparse to sparse lower leaf sheath pubescence, sparse lower leaf blade pubescence

LEAF: medium green, absent or very sparse pubescence on the margin, medium glaucosity
FLAG LEAF: high to very high frequency of recurving/drooping

STEM: medium to dense pubescence/hairiness above and below upper culm node

PANICLE: equilateral orientation, medium to dense, semi-erect attitude of branches, 30-45 degree angle between rachis and dominant side branch, few short hairs or spines on lowest node
SPIKELET: abscission separation, nodding attitude
RACHILLA: long length between primary and secondary floret, short to medium grooves, very sparse to sparse pubescence
GLUME: medium to strong glaucosity
LEMMA: yellow to reddish brown at maturity, sparse to medium pubescence on lateral and dorsal surface at maturity, weak glaucosity at the green stage, weak to medium overlap on palea at the green stage, absent or very weak tendency to be awned

KERNEL: no basal hairs, yellow to light brown colour, two grains per spikelet, pointed shape of the tip of the scutellum, large scutellum, dense groat pubescence

DISEASE REACTION: susceptible to Crown Rust (Puccinia coronata) races (CR13, 192, 181, 185, 223, 225), susceptible to Stem Rust (Puccinia graminis f. sp. avenae) races (NA8, 16, 25, 27, 28, 55, 67), moderately susceptible to Black Loose Smut (Ustilago avenae) races (A13, A60, A617), moderately susceptible to Red Leaf (BYDV)

AGRONOMY: fair lodging resistance, day-length sensitive

Origin & Breeding History: 'CDC Sol-Fi' (OT3009) was developed by the breeder Brian Rossnagel of the Crop Development Centre's oat breeding program using a pedigree breeding system. It originates from the cross N979-5-1 x OT366 made at the Crop Development Centre during the winter of 1994. The F1 generation was grown as a bulk population in Saskatoon, Saskatchewan. The F2-F3 generations were grown as single seed derived lines during the winter of 1995/1996. 'CDC Sol-Fi' was selected as a single head from an F4 plant in the field in Saskatoon, Saskatchewan in 1996. Following that it was grown and selected as an F5 hill plot. The seed from the F5 hill plot was bulked as the line that became 'CDC Sol-Fi'. It was tested in CDC yield trials in 1999-2002 as SA98741, followed by testing in the Western Canadian Oat Cooperative trials during 2003 as 'OT3009'. The selection criteria used included grain yield, agronomic characteristics and specific grain quality including increased beta glucan.

Tests & Trials: Tests and Trials were conducted during the summers of 2005 and 2006 at the Crop Development Centre, Saskatoon, Saskatchewan. Plots consisted of 5 rows, 3.7 meters in length. There were 2 replicates arranged in a Random Complete Block Design.

Comparison tables for 'CDC Sol-Fi' with reference varieties 'Morgan', 'CDC Dancer' and 'Hi-Fi'

Flag Leaf length (cm)

Days to heading

Plant Height (cm)

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Oat: 'CDC Sol-Fi' (bottom left) with reference varieties 'Morgan' (bottom right), 'CDC Dancer' (top left) and 'Hi-Fi' (top right)

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Oat: 'CDC Sol-Fi' (center left) with reference varieties 'CDC Dancer' (far left), 'AC Morgan' (center right) and 'Hi-Fi' (far right)