AAC Cabri


Denomination: 'AAC Cabri'
Previously Proposed Denomination: 'DT840'
Botanical Name: Triticum turgidum subsp. durum
Applicant/Holder: Agriculture & Agri-Food Canada, Swift Current Research and Development Centre
1 Airport Road
P.O. Box 1030
Swift Current, Saskatchewan
S9H 3X2
Breeder: Ron De Pauw, Agriculture & Agri-Food Canada, Swift Current, Saskatchewan
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
6000 C&E Trail
Lacombe, Alberta
T4L 1W1
Tel: (403) 782-8126
Application Date: 2014-04-29
Application Number: 14-8291
Grant of Rights Date: 2016-05-16
Certificate Number: 5255
Grant of Rights Termination Date: 2036-05-16

Variety Description

Varieties used for comparison: 'AAC Durafield', 'Enterprise', 'Strongfield' and 'Transcend'

Summary: The flag leaf of 'AAC Cabri' is shorter and narrower than that of 'Strongfield'. The spike glaucosity of 'AAC Cabri' is weak whereas it is strong for 'AAC Durafield' and 'Strongfield'. In cross-section, the straw of 'AAC Cabri' is thick to very thick whereas it is thin for the reference varieties. The spike of 'AAC Cabri' is shorter than that of 'AAC Durafield' and 'Transcend'.


PLANT: spring wheat, intermediate growth habit at the 5 to 9 tiller stage, high frequency of plants with recurved flag leaves, matures mid-season

SEEDLING (4-leaf stage): strong to very strong intensity of anthocyanin colouration of the coleoptile, glabrous sheath and blade of the lower leaves

FLAG LEAF: absent or very weak intensity of anthocyanin colouration of the auricles, medium glaucosity of the sheath and lower side of leaf blade, glabrous blade and sheath

CULM: absent or very sparse density of hairiness of uppermost node, medium to strong glaucosity, curved neck

SPIKE: weak glaucosity, parallel sided shape, medium to dense, off white at maturity, erect attitude
AWNS: longer than length of spike, white at maturity
LOWER GLUME SHOULDER: very narrow to narrow, straight and slightly sloping shape
LOWER GLUME: long, narrow to medium width, glabrous
LOWER GLUME BEAK: short to medium length, slightly curved to straight shape
LOWEST LEMMA: straight beak

STRAW: thick to very thick in cross section

KERNEL: amber, large, elliptical, rounded to angular shaped cheek, short brush hairs, medium to wide and medium depth of crease
GERM: large, oval shape

AGRONOMIC CHARACTERISTICS: good resistance to shattering, good tolerance to drought
DISEASE REACTIONS: resistant to Leaf rust (Puccinia recondita) and Common bunt (Tilletia caries, Tilletia foetida); moderately resistant to Stem rust (Puccinia graminis f. sp. tritici), Leaf spot (Pyrenophora tritici-repentis and Mycosphaerella graminicola) and Loose smut (Ustilago tritici); and moderately susceptible to Fusarium head blight (Fusarium species and specifically Fusarium graminearum)

Origin & Breeding History: 'AAC Cabri' (experimental name 'DT840' and 'A0423-KB02') was selected from the cross 'A9918-LX2B' / 'Strongfield' made in 2004 at the Semiarid Prairie Agricultural Research Centre, Swift Current, Saskatchewan . In 2004, the F1 seeds were increased in the greenhouse and seed of the F2 were space planted in a leaf and stem rust epiphytotic field nursery near Swift Current in 2005 and individual plants were selected for disease resistances, plant height, straw strength and maturity. Seeds of individual spikes were grown in F3 rows near Lincoln, New Zealand in 2005-2006 and selections were made for plant height, maturity and straw strength. In 2006, the F4 lines were grown in plots near Swift Current and Regina, Saskatchewan and were assessed for agronomic performance. Following grow outs and selection of F5 rows in Leeston, New Zealand, the selected F6 lines were grown in various locations in Saskatchewan and Alberta in 2007 and selections were made based on agronomic performance, disease resistance and quality characteristics. One line, 'A0423-KB02', was identified as meeting all selection criteria at each stage. In 2008, 'A0423-KB02' was tested in the Durum Central A3 test replicated at 5 locations and in the Durum-B test replicated at 6 locations in 2009. From 2010 to 2013, 'A0423-KB02' was tested as 'DT840' in the Durum Cooperative Test.

Tests & Trials: The comparative tests and trials were conducted during the summers of 2013 and 2014 at the Agriculture & Agri-Food Canada SemiArid Prairie Agricultural Research Centre, Swift Current, Saskatchewan. Plots consisted of 4 rows, with a row length of 3 metres and a row spacing of 23 cm. There were 4 replications arranged in randomized complete block design. Measured characteristics were based on 20 measurements per variety per year. Means are based on a two year average. Mean differences are significant at the 5% probability level based on LSD values.

Comparison tables for 'AAC Cabri' with reference varieties 'AAC Durafield', 'Enterprise', 'Strongfield' and 'Transcend'

Flag leaf length (cm)

  'AAC Cabri' 'AAC Durafield' 'Enterprise' 'Strongfield' 'Transcend'
mean (LSD=2.0) 26.6 25.6 28.2 29.4 26.4
std. deviation 2.3 2.4 3.3 3.2 2.6

Flag leaf width (cm)

  'AAC Cabri' 'AAC Durafield' 'Enterprise' 'Strongfield' 'Transcend'
mean (LSD=1.2) 14.7 15.5 15.7 17.0 14.8
std. deviation 1.1 1.0 1.4 1.2 1.1

Spike length (cm) (excluding awns)

  'AAC Cabri' 'AAC Durafield' 'Enterprise' 'Strongfield' 'Transcend'
mean (LSD=0.2) 7.2 8.0 7.5 7.5 7.9
std. deviation 0.4 0.5 0.5 0.5 0.4

Click on image for larger view
AAC Cabri
Wheat: 'AAC Cabri' (left) with reference varieties, 'AAC Durafield' (centre left), 'Enterprise' (centre), 'Strongfield' (centre right) and 'Transcend' (right)

Click on image for larger view
AAC Cabri
Wheat: 'AAC Cabri' (left) with reference varieties, 'AAC Durafield' (centre left), 'Enterprise' (centre), 'Strongfield' (centre right) and 'Transcend' (right)

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