CDC Glas

Flax

Variety Description

Varieties used for comparison: 'CDC Bethune' and 'CDC Sorrel'

Summary: The natural height of 'CDC Glas' is shorter than that of 'CDC Sorrel'. 'CDC Glas' flowers later than both reference varieties. The colour at the distal end of the filament of 'CDC Glas' is light blue whereas it is dark blue on 'CDC Bethune' and white on 'CDC Sorrel'. The colour of the style of 'CDC Glas' is light blue at both the distal and basal ends whereas it is blue on 'CDC Bethune'. The ciliation of the false septa of the boll of 'CDC Glas' is absent whereas it is present in 'CDC Sorrel'. 'CDC Glas' is later maturing than 'CDC Bethune'.

Description:

PLANT: oilseed type
HYPOCOTYL: weak to medium intensity of anthocyanin colouration

FLOWER: absent or very weak sepal dotting, blue-violet colour of crown at bud stage, flattened disk shape, medium sized corolla, blue, no longitudinal folding of the petals
FILAMENT: light blue at distal end, white at base
STAMEN: blue anthers
STYLE: light blue at distal and basal end
STIGMA: pale blue

BOLL: medium size, ciliation of the false septa absent, semi-dehiscent
SEED: medium brown, medium size

AGRONOMIC CHARACTERISTICS: good resistance to shattering, capsule loss and lodging; low capability to produce basal branches

Origin & Breeding History: 'CDC Glas' was developed at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan using a pedigree breeding method. The cross between 'CDC Bethune' and 'CDC Mons' was conducted in 2000 in the growth chamber at the College of Agriculture and BioResources, University of Saskatchewan. The F2 population was grown at the Kernen Crop Research Farm in 2001 and advanced using the pedigree system from the F3 through F5. Selection at each generation was primarily for vigour of stand, maturity, oil content and iodine value. From 2006 through 2008, the line was evaluated as F06012 in replicated yield trials in Saskatchewan. It was entered into the Flax Cooperative Test as FP2300 and tested again in 2010.

Tests & Trials: Tests and trials were conducted in 2011 and 2012 in Saskatoon, Saskatchewan. Trials consisted of 2 replications of each variety in a randomized complete block design (RCBD). There were 6 rows per replicate with a row length of 3.66 meters with 19 cm between rows (5.01 square meters total). Measured characteristics were based on 20 measurements each year.

Comparison tables for 'CDC Glas' with reference varieties 'CDC Bethune' and 'CDC Sorrel'

Natural plant height including branches (at time of flowering) (cm)

Flowering date (number of days from planting to first flower open on 10% of plants)

Boll maturity (number of days from planting to 75% of bolls brown)

Click on image for larger view

Flax: 'CDC Glas' (center) with reference varieties 'CDC Sorrel' (left) and 'CDC Bethune' (right)