|Previously Proposed Denomination:||'B89-6-28-883'|
|Botanical Name:||Triticum aestivum|
Agriculture & Agri-Food Canada, Ottawa
Ottawa Research and Development Centre
Room 1093A - 960 Carling Avenue
University of Guelph
50 Stone Rd E, Ichthyology Building #92
Tel: 519-824-4120; ext 58878
Harvey Voldeng, Agriculture & Agri-Food Canada, Ottawa, Ontario
|Agent in Canada:||
University of Guelph
Business Development Office
130 Research Lane, Unit 4
Varieties used for comparison: 'Quantum', 'Winfield', 'Superb' and 'Wendel'
Summary: 'CM Isidore' has a more erect growth habit than 'Winfield', 'Superb' and 'Wendel'. 'CM Isidore' matures earlier than 'Winfield', 'Superb' and 'Wendel' and later than 'Quantum'. 'CM Isidore' has a more narrow flag leaf and a shorter spike than the reference varieties. 'CM Isidore' has weaker glaucosity on the lower side of the flag leaf than 'Quantum', 'Superb' and 'Wendel'. The flag leaf auricles of 'CM Isidore' have weaker pubescence than those of 'Quantum' and weaker anthocyanin colouration than those of 'Superb'. Glaucosity of the flag leaf sheath and neck is moderate and weak to moderate, respectively, for 'CM Isidore' while it is strong to very strong for 'Quantum'. At maturity, the attitude of the spikes of 'CM Isidore' is nodding while it is erect or incline for the reference varieties. 'CM Isidore' has weak anthocyanin colouration of the straw while it is absent for the reference varieties.
YOUNG PLANT (4 leaf stage): absent or very weak anthocyanin colouration of coleoptiles, glabrous sheaths, pubescent at base of blades of the lower leaves
PLANT: spring type, erect to semi-erect growth habit, mid-season maturity, low tendency to recurved flag leaves
STEM AT MATURITY: medium pith in cross-section, weak anthocyanin colouration
CULM NECK: weak to medium glaucosity, weak to moderate curvature
FLAG LEAF: dark green, glabrous on upper side, very weak glaucosity on lower side, intermediate between upright and drooping attitude
FLAG LEAF SHEATH: glabrous, medium glaucosity
FLAG LEAF AURICLES: absent or very weak anthocyanin colouration, no pubescence of margins
SPIKE: parallel sided, medium density, nodding attitude at maturity, medium glaucosity, white at maturity
AWNS: medium length, mostly spreading attitude, white
LOWER GLUME: medium width, medium length, glabrous, elevated shoulder, medium width shoulder, straight beak, medium length beak, sparse internal hairs
LEMMA: slightly curved beak, dark green markings on greenish yellow background
KERNEL: hard red type, medium to dark red, small to medium size, medium length, medium width, ovate, rounded cheeks, medium length brush hairs, medium width crease, medium depth crease
GERM: medium size, round
QUALITY CHARACTERISTICS: good bread quality
RESISTANCE TO DISEASE: susceptible to Yellow Dwarf and Barley Yellow Dwarf Virus; moderate susceptibility to Powdery Mildew (Erysiphe graminis f.sp. tritici) and Fusarium Head Blight (Fusarium graminearum); moderate resistance to Leaf Rust (Puccinia triticina)
Origin & Breeding History: The wheat variety 'CM Isidore' (experimental designation B89-6-28-883) originated from the cross Roblin/Bluesky///Max/Coteau//Bluesky made by Dr. Jean-Pierre Dubuc of Agriculture and Agri-Food Canada of St-Foy, Quebec in 1989. The breeding technique used was Modified Bulk. From 1997 to 1999, tests were conducted on selected lines in a number of locations including Ridgetown, Centralia, Kemptville and Ottawa in Ontario. Final selection of 'CM Isidore' was made in the F7 and F8 generations based on Fusarium resistance, Barley Yellow Dwarf resistance, kernel cross-section type, seed size, grain density, plant appearance, number of heads produced per unit area, cleanliness of leaves, percent protein, percent moisture, alpha amylase activity and loaf characteristics. In 2000, 'CM Isidore' was tested in 8 locations across Ontario for Fusarium Head Blight susceptibility and baking quality.
Tests & Trials: The tests and trials for 'CM Isidore' were conducted during the summers of 2005 and 2006 in Ridgetown, Ontario. Plots consisted of 6 rows, 4 metres in length at 15 cm row spacing with 40 cm between plots. There were 4 replicates arranged in a Random Complete Block Design.
Comparison tables for 'CM Isidore' with reference varieties 'Quantum', 'Winfield', 'Superb' and 'Wendel'
Flag leaf width (mm)
Days to heading
Height at heading (including awns) (cm)
Kernel test weight (kg/hectolitre)
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