5604HR CL

Wheat

Variety Description

Varieties used for comparison: 'McKenzie' and 'WR859CL'

Summary: '5604HR CL' has a medium frequency of recurved flag leaves whereas 'McKenzie' has a high frequency and 'WR859CL' has a high to very high frequency. The straw pith of '5604HR CL' is thin in cross section whereas it is medium in thickness in 'McKenzie'. There is no anthocyanin colouration of the straw at maturity on '5604HR CL' whereas it is medium to strong in intensity on 'McKenzie'. The spike attitude at maturity of '5604HR CL' is erect whereas it is nodding on 'McKenzie' and inclined on 'WR859CL'. The spike of '5604HR CL' is longer than those of both reference varieties. The shoulder of the lower glume of '5604HR CL' is slightly sloping to straight whereas it is elevated on 'McKenzie'. The lower glume of '5604HR CL' is long whereas it is very short on 'McKenzie'. '5604HR CL' matures earlier than 'WR859CL'.

Description:

PLANT: spring type
SEEDLING (at four leaf stage): absent or very weak intensity of anthocyanin colouration of coleoptile, glabrous lower leaf sheath and blade

GROWTH HABIT (at 5-9 tiller stage): erect to semi-erect
FLAG LEAF (at booting): medium frequency of plants with recurved flag leaves, absent or very weak intensity of anthocyanin colouration on auricles, weak glaucosity on sheath, glabrous blade and sheath

SPIKE: very weak glaucosity, tapering, medium density, white in colour with erect attitude at maturity, medium hairiness of convex surface of apical rachis segment
CULM: absent or very weak glaucosity, very weak curvature
STRAW: thin pith in cross section, no anthocyanin colouration at maturity
AWNS: present, long, very spreading attitude, white colour

LOWER GLUME: medium width and length, medium pubescence, sparse internal hairs
LOWER GLUME SHOULDER: narrow to medium width, slightly sloping to straight
LOWER GLUME BEAK: long, slightly curved
LOWEST LEMMA: slightly curved beak

KERNEL: hard red, dark to medium red, medium size, medium length and width, broad elliptical shape, rounded cheek, medium length brush hairs, medium to large round germ, medium width and deep crease

PERFORMANCE CHARACTERISTICS: good resistance to pre-harvest sprouting tendency, good bread making quality, resistant to Imazamox

DISEASE REACTION: moderately susceptible to Fusarium head blight (Fusarium graminearum, Fusarium species), Common bunt (Tilletia caries, Tilletia foetida), Loose smut (Ustilago tritici) and resistant to Leaf rust (Puccinia triticina) and Stem rust (Puccinia graminis f. sp. tritici)

Origin & Breeding History: '5604HR CL' originated from the cross 'AC Barrie'//Butte86*4/FS4/3/ 'CDC Teal'/4/ 'McKenzie'/5/(BW288) 'AC Domain'*2/'AC Cora' made at Berthoud, Colorado in 2000. Individual head selections were made from an F2 population screened at the Syngenta Seeds Canada breeding nursery at Rosebank, Manitoba in 2001. Single seed descent was used to advance these selections through the F3 and F4 generations in the greenhouse. In the summer of 2002, F5 headrows were individually bulked from a selection nursery in Rosebank, Manitoba. The individual bulks (F6) were screened and selected from a two location observation nursery (Rosebank and Souris, Manitoba) in 2003. One of the bulk selections was designated 00S2142-7 and tested in Syngenta Seeds Canada research plots in 2004 and 2005. It was tested in the Western Bread Wheat Co-op as BW878 during 2006, 2007 and 2008 growing seasons. Eighty heads were picked for initial purity from an F8 (F4 derived) increase plot in 2005. Breeder seed was produced at Rosebank, Manitoba and Berthoud, Colorado in 2009.

Tests & Trials: Tests and trials for '5604HR CL' were conducted during the 2008 and 2009 growing seasons at the Viterra Research Farm in Rosebank, Manitoba. Plots consisted of 6 rows, 5 meters in length by 1.4 meter in width with a row spacing of 15 cm. There were 3 replicates arranged in a RCB Design.

Comparison tables for '5604HR CL' with reference varieties 'McKenzie' and 'WR859CL'

Days to maturity

Spike length (cm)

Click on image for larger view

Wheat: '5604HR CL' (BW878) (left) with reference varieties 'McKenzie' (centre) and 'WR859 CL' (right)