CDC Haymaker

Oat

Variety Description

Varieties used for comparison: 'CDC Weaver' and 'CDC Dancer'

Summary: The frequency of plants with recurved flag leaves is very high on 'CDC Haymaker' whereas it is medium on the plants 'CDC Weaver' and low on 'CDC Dancer'. The flag leaves of 'CDC Haymaker' are longer and wider than those of both reference varieties. The plants of 'CDC Haymaker' head later than both reference varieties. The panicles and lower glumes of 'CDC Haymaker' are longer than those of both reference varieties. The lemma of 'CDC Haymaker' has a medium tendency to be awned whereas the tendency is very weak on 'CDC Weaver' and absent to very weak on 'CDC Dancer'.

Description:

SEEDLING (5-9 tiller stage): spring forage oat, semi-erect juvenile growth habit, sparse to medium pubescence on lower leaf sheath, sparse pubescence on lower leaf blade

LEAF (at booting stage): dark green, absent to very sparse pubescence on margin, medium intensity of glaucosity at green stage, very high frequency of plants with recurved flag leaves

CULM: sparse to medium hairiness on stem above and below upper node

PANICLE (shortly after heading): medium density, many short to medium length hairs or spines on the lowest node
PANICLE BRANCHES: intermediate orientation, semi-erect attitude, ranging from less than 30 degree to more than 45 degree angle between rachis and dominant side branch
SPIKELET: very weak to medium glaucosity of glumes, semi-abscission to fracture type separation of lower florets, semi-nodding to nodding attitude
RACHILLA: long between primary and secondary florets, medium to long grooves, sparse to medium pubescence
LEMMA: very weak to medium glaucosity, medium extent of lateral overlap on palea, white to yellow at maturity, very sparse pubescence on lateral and dorsal surfaces, medium tendency to be awned

KERNEL (primary kernels from upper spikelets): hulled, basal hairs present, cream to yellow, two grains per spikelet, medium density of pubescence on groat
SCUTELLUM: pointed tip, medium sized

AGRONOMIC CHARACTERISTICS: fair lodging resistance, day length sensitive

Origin & Breeding History: 'CDC Haymaker' (experimental designation SA04412) was developed at the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan using a pedigree breeding system. It arose from the cross 'CDC Baler' x 'CDC Dancer' made in 2000. The F1 through F4 generations were grown as bulk populations with the F1 and F3 grown in a winter nursery in New Zealand. 'CDC Haymaker' was grown and selected as a single F4 derived F5 hill plot in Saskatoon in 2003. The seed from the F5 hill plot was bulked as the line SA04412 and tested in Crop Development Crop yield trials from 2004 through 2010. Selection criteria for 'CDC Haymaker' included high forage yield combined with good forage quality, good physical kernel quality characterized by high kernel weight and plump grain, and plant height with strong straw.

Tests & Trials: Tests and trials for 'CDC Haymaker' were conducted in Saskatoon, Saskatchewan during the summers of 2012 and 2013. Plots consisted of 5 rows with a row length of 3.7 metres and a row spacing of 20 cm. There were 3 replicates arranged in a RCB design. Measured characteristics were based on 20 measurements. Differences are significant at the 5% probability level based on LSD values.

Comparison tables for 'CDC Haymaker' with reference varieties 'CDC Weaver' and 'CDC Dancer'

Flag leaf length (cm)

Flag leaf width (mm)

Number of days to heading

Panicle length (cm)

Lower glume length (mm)

Click on image for larger view

Oat: 'CDC Haymaker' (centre) with reference varieties 'CDC Dancer' (left) and 'CDC Weaver' (right)