Broadview

Wheat

Denomination: 'Broadview'
Botanical Name: Triticum aestivum
Applicant/Holder: Agriculture & Agri-Food Canada, Lethbridge
Lethbridge Research Centre, 5403 - 1 Avenue, South
P.O. Box 3000
Lethbridge, Alberta
T1J 4B1
Canada
Breeder: Robert Graf, Agriculture & Agri-Food Canada, Lethbridge, Alberta
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
6000 C&E Trail
Lacombe, Alberta
T4L 1W1
Canada
Tel: (403) 782-8126
Application Date: 2009-09-02
Application Number: 09-6723
Grant of Rights Date: 2011-11-17
Certificate Number: 4211
Grant of Rights Termination Date: 2029-11-17

Variety Description

Varieties used for comparison: 'CDC Falcon' and 'CDC Raptor'

Summary: 'Broadview' has a high frequency of plants with recurved flag leaves while it is a medium frequency in 'CDC Falcon'. The flag leaf of 'Broadview' is narrower than the reference varieties. 'Broadview' heads and matures earlier than 'CDC Raptor'. The glaucosity of the neck of the culm at heading in 'Broadview' is medium while it is absent or very weak in 'CDC Raptor'. At maturity, the spike attitude in 'Broadview' is inclined while it is erect in 'CDC Raptor'. 'Broadview' is taller than 'CDC Falcon'. 'Broadview' has a slightly sloping to straight shoulder shape of the lower glume while it is sloping to slightly sloping in 'CDC Raptor'. The beak of the lower glume in 'Broadview' is a medium length while it is short in 'CDC Raptor'. 'Broadview' has a slightly darker light tan chaff colour while it is slightly yellowish in 'CDC Falcon' and 'CDC Raptor'. 'Broadview' has absent or very sparse internal hairs of the lower glume while it is sparse to medium in 'CDC Raptor'. 'Broadview' is resistant to leaf rust while 'CDC Falcon' and 'CDC Raptor' are moderately resistant.

Description:

PLANT: winter type, common wheat, semi-erect growth habit at the 5-9 tiller stage, medium glaucosity of the culm at heading, high frequency of plants with recurved flag leaves

SEEDLING (4 leaf stage): absent or very weak intensity of anthocyanin colouration of the coleoptile, very sparse to sparse pubescence on the sheaths of the lower leaves, glabrous blades of the lower leaves

FLAG LEAF: weak intensity of anthocyanin colouration of the auricles, drooping attitude, strong glaucosity of the sheath, glabrous blade and sheath

STRAW (AT MATURITY): hollow pith in cross-section, no anthocyanin colouration
SPIKE: very weak to weak glaucosity at heading, tapering profile, lax to medium density, awns present, awns shorter than the length of the spike
SPIKE AT MATURITY: white, yellowish awns, incline attitude, spreading awn attitude, straight neck of the culm, absent or very sparse hairiness of convex surface of apical rachis segment
LOWER GLUME: light tan colour, narrow shoulder, slightly sloping to straight shoulder, medium to long, medium width, glabrous to very sparse pubescence, medium length slightly curved beak, absent or very sparse internal hairs
LEMMA: slightly curved beak

KERNEL: hard red type, medium red colour, medium to large size, short to medium length, medium width, elliptical to ovate, rounded cheek shape, short to medium length brush hairs, small to medium sized oval germ, medium crease width, medium crease depth, brown colour reaction to phenol

AGRONOMY: good resistance to shattering, fair drought tolerance, good winter survival

DISEASE REACTION: resistant to leaf rust (Puccinia triticina) and stem rust (Puccinia graminis f. sp. tritici), moderately resistant to moderately susceptible to powdery mildew (Erysiphe graminis f. sp. tritici) and stripe rust (Puccinia striiformis), susceptible to highly susceptible to fusarium head blight (Fusarium graminearum), highly susceptible to common bunt (Tilletia caries, Tilletia foetida)

Origin & Breeding History: 'Broadview' (experimental designation W425) derives from the cross KS92WGRC15 / CDC Kestrel // CDC Falcon made in 1997 at the AAFC Lethbridge Research Centre, Lethbridge, Alberta. Following multiplication of the F1 seed, F2 seedlings were screened for resistance to stem and leaf rust, with the best plants utilized for double haploid production using the maize hybridization technique. Initial row evaluation of doubled haploid lines took place in 2002, in which selection was based on winter survival, plant vigour, straw strength, plant height, protein content and test weight. Stem and leaf rust resistance was evaluated from 2003 to 2005 in Winnipeg, Manitoba. Based on the resistance to stem and leaf rust in 2003, a line designated LE1911 was grown in an irrigated, single replicate preliminary agronomic trial with repeated checks at Lethbridge in 2004. It was entered into the 2005 AAFC B2 test and was subsequently evaluated as W425 in the Western Wheat Cooperative Registration Trial from 2006 to 2008.

Tests & Trials: Tests and trials were conducted in 2009 and 2010 in Lethbridge, Alberta. Plots consisted of 4 rows with a row length of 3.5 meters and a row spacing of 23 cm. There were 4 replicates in 2009 and 5 replicates in 2010.


Comparison tables for 'Broadview' with reference varieties 'CDC Falcon' and 'CDC Raptor'

Flag leaf width (mm)

  'Broadview' 'CDC Falcon' 'CDC Raptor'
mean 2009 10.1 12.0 13.4
std. deviation 1.0 0.8 1.0
mean 2010 14.4 15.2 15.4
std. deviation 0.7 1.2 1.0

Plant height (cm)

  'Broadview' 'CDC Falcon' 'CDC Raptor'
mean 2009 86.67 81.00 91.33
std. deviation 2.08 2.65 1.53
mean 2010 97.67 92.00 100.33
std. deviation 2.08 2.00 5.69

Click on image for larger view
Broadview
Wheat: 'Broadview' (right) with reference varieties 'CDC Falcon' (centre left) and 'CDC Raptor' (centre right)

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