CDC Durango

Barley

Variety Description

Varieties used for comparison: 'CDC Austenson' and 'Claymore'

Summary: At booting, the flag leaf of 'CDC Durango' is smaller than the flag leaf of 'CDC Austenson' and larger than that of 'Claymore'. At maturity, the plants of 'CDC Durango' are shorter than those of 'Claymore'. The sterile spikelet of 'CDC Durango' is fully developed while that of 'Claymore' has rudimentary development. Excluding the awns, the spike of 'CDC Durango' is longer than that of 'CDC Austenson'. The spiculation of the inner lateral nerves on the dorsal side of the lemma on the kernel of 'CDC Durango' is of a weak to medium degree while that of 'CDC Austenson' is of a medium to strong degree and that of 'Claymore' is absent or of a very weak degree. The rachilla hairs on the kernel of 'CDC Durango' are long while those of 'CDC Austenson' are short.

Description:

YOUNG PLANT: semi-erect growth habit at tillering, absent or very sparse pubescence on lower leaf sheaths
PLANT: two row, spring feed barley

FLAG LEAF (AT BOOTING): absent or very sparse pubescence on blade
FLAG LEAF SHEATH: medium glaucosity, absent or very sparse pubescence
AURICLES: very weak to weak intensity of anthocyanin colouration, absent or very sparse pubescence on margins

SPIKE: mid to late season emergence, medium glaucosity at end of anthesis, erect to semi-erect attitude, platform shaped collar, parallel shape, lax, divergent sterile spikelet attitude, glume and awn of the median spikelet are equal in length relative to the grain
LEMMA AWNS: weak intensity of anthocyanin colouration of tips, longer than spike, rough spiculations on margins
FIRST SEGMENT OF RACHIS: short to medium length, weak to medium curvature

KERNEL: whitish aleurone layer, long rachilla hairs, husk present, weak to medium spiculation of inner lateral nerves of dorsal side of lemma, hairless ventral furrow, frontal disposition of lodicules, incomplete horseshoe shaped basal markings, medium in length and width

AGRONOMIC CHARACTERISTICS: good resistance to lodging, good resistance to shattering, good tolerance to straw breakage, fair to good tolerance to drought

Origin & Breeding History: 'CDC Durango' (experimental designations TR19175 and SB160566) originated from a cross between the varieties 'Claymore' and 'CDC Austenson' conducted under a glass greenhouse in the summer of 2013 at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada. The F1 seed was grown in Leeston, New Zealand during the winter of 2013-2014 and the resulting F2 seed grown as a bulk population in Saskatoon, Saskatchewan in 2014. The variety was advanced through the F3 and F4 generations as single seed derived lines in greenhouse facilities at the University of Saskatchewan during the winter of 2014-2015. The F5 generation was grown as single hill plots in Saskatoon, Saskatchewan with one hill plot bulk harvested and designated SB160566 in 2015. The line was tested in yield trials at the University of Saskatchewan and entered in the Western Cooperative Two-Row Barley Registration Trials as TR19175 in 2019 and 2020. Selection criteria used in the development of 'CDC Durango' included grain yield, lodging resistance, plant height and maturity and adaptability across western Canada.

Tests & Trials: The comparative trials for 'CDC Durango' were conducted at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan in the 2021 and 2022 growing seasons. The trials were conducted using a RCB design consisting of 4 replications per variety. Each plot consisted of 5 rows spaced 20 cm apart, with a row length of 3.66 metres. The planting density of 215 seeds per square metre resulted in approximately 5600 plants per variety per year. Measured characteristics were based on a minimum of 24 measurements per variety per year, except for seed weight, which was based on a minimum of 10 measurements per variety per year. Mean differences were significant at the 5% probability level based on LSD values.

Comparison tables for 'CDC Durango' with reference varieties 'CDC Austenson' and 'Claymore'

Flag leaf length (cm)

Flag leaf width (mm)

Plant height (stem and spike, including awns) (cm)

Spike length (excluding awns) (cm)

Click on image for larger view

Barley: 'CDC Durango' (centre) with reference varieties 'CDC Austenson' (left) and 'Claymore' (right)

Click on image for larger view

Barley: 'CDC Durango' (centre) with reference varieties 'CDC Austenson' (left) and 'Claymore' (right)