HY 271-SRW


Denomination: 'HY 271-SRW'
Botanical Name: Triticum aestivum
Applicant/Holder: Agrigenetics, Inc. (A division of Dow AgroSciences Inc.)
9330 Zionsville Road
Indianapolis, Indiana
United States of America
Breeder: Mark Etienne, DOW AgroSciences (A Division of Dow AgroSciences, Inc.), St. Mary's, Ontario
Agent in Canada: Smart & Biggar
P.O. Box 2999, Station D
55 Metcalfe Street, Suite 900
Ottawa, Ontario
K1P 5Y6
Tel: 613-232-2486 ex. 1279
Application Date: 2011-01-24
Application Number: 11-7154
Protective direction granted: 2011-01-24
Grant of Rights Date: 2014-02-04
Certificate Number: 4703
Grant of Rights Termination Date: 2032-02-04

Variety Description

Varieties used for comparison: '25R47' and 'FT Wonder'

Summary: 'HY 271-SRW' has absent or very weak anthocyanin colouration of the coleoptile whereas '25R47' has moderate anthocyanin. The plants of 'HY 271-SRW' are taller than those of '25R47' and shorter with smaller flag leaves than 'FT Wonder'. The spikes of 'HY 271-SRW' have a more erect attitude than those of both reference varieties. The awns of 'HY 271-SRW' are longer and less spreading than those of 'FT Wonder'. 'HY 271-SRW' has a shorter spike than 'FT Wonder'. The lower glume of 'HY 271-SRW' is longer with a narrower shoulder and longer beak than that of both reference varieties. The shape of the shoulder of the lower glume is sloping for 'HY 271-SRW' while it is slightly sloping for '25R47' and slightly sloping to straight for 'FT Wonder'. The beak of the lemma of 'HY 271-SRW' is straight to slightly curved whereas it is moderate to strongly curved for '25R47' and slight to moderately curved for 'FT-Wonder'. 'HY 271-SRW' kernels have a shallower crease than those of both reference varieties.


PLANT: winter wheat, semi-erect growth habit, low to medium frequency of plants with recurved flag leaves, matures early to mid-season
SEEDLING (4-leaf stage): coleoptile with absent or very weak intensity of anthocyanin colouration, glabrous sheath and blade of the lower leaves

FLAG LEAF: auricles with absent or very weak intensity of anthocyanin colouration, glabrous sheath and blade, weak to moderate glaucosity of sheath

CULM/NECK: weak to moderate glaucosity, weak to moderately curved at maturity

STRAW: thin pith in cross section, no anthocyanin colouration at maturity

SPIKE: tapering to parallel sided, medium density, erect to inclined attitude at maturity, absent or very weak glaucosity, white to yellow at maturity, sparse to moderately dense hairiness of convex surface of the apical rachis segment
AWNS: medium to long, attitude is half way between appressed and spreading, white to light brown
LOWER GLUME: medium to wide, medium to long, very sparse to sparse pubescence, shape of shoulder is sloping, absent or very narrow shoulder, straight to slightly curved beak, medium to long beak, internal hairs are sparse
LEMMA: straight to slightly curved beak

KERNEL: soft red type, medium red, medium to large, medium to long, medium to wide, elliptical, rounded cheek, medium to long brush hairs, small to medium size germ when observed from dorsal view, oval to broad elliptical germ, narrow to medium width crease, shallow crease

AGRONOMIC CHARACTERISTICS: good winter survival, fair to good pastry and biscuit quality, 10.8% wheat protein

DISEASE REACTIONS: resistant to moderately resistant to Powdery mildew (Erysiphe graminis f. sp. tritici) and Leaf rust (Puccinia triticina), moderately resistant to moderately susceptible to Septoria nodorum blotch (Septoria nodorum) and Stripe rust (Puccinia striiformis), moderately susceptible to Septoria tritici blotch (Septoria tritici) and Fusarium head blight (Fusarium graminearum)

PESTICIDE REACTIONS: resistant to Buctril-M herbicide

Origin & Breeding History: 'HY 271-SRW' (experimental designation TW271*099) is a winter wheat variety that was developed by Hyland Seeds (A Division of Dow AgroSciences, Inc.) from a cross between '25W60' and 'P2540', made at the Nairn Research Laboratory in Ailsa Craig, Ontario from 1999 to 2000. In 2000, the F1 seed was planted in the laboratory and doubled using the doubled haploid (maize pollinated) process. In the fall of 2001, the F2 was planted in the nursery and during the summer of 2002 selections were made. In the fall of 2002, 'TW271*099' (HY 271-SWR) was entered into a 2-replicate trial and into subsequent yield evaluation trials through to 2008. After two years in the Orthogonal Soft Wheat Trial (OCCC), 'HY 271-SRW' was supported for registration in January of 2009.

Tests & Trials: Tests and trials were conducted during 2010 and 2011. The plot for each of these years was planted at the Nairn Research Testing Location (Stewart Research Acres) in Nairn, Ontario in the fall of 2009 and 2010. The plots were planted at a rate of 400 seeds/square metre, 4 metres long, and consisted of four replicates. In the spring of each year, the plots were cut back to 3 metres and finally consisted of 5 x 23 cm rows. The total plot area was 1.38 metres x 3 metres = 4.14 metres.

Comparison tables for 'HY 271-SRW' with reference varieties '25R47' and 'FT Wonder'

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

  'HY 271-SRW' '25R47' 'FT Wonder'
mean 79.8 76.8 86.4
std. deviation 4.33 4.15 4.87

Flag leaf length (cm)

  'HY 271-SRW' '25R47' 'FT Wonder'
mean 18.6 19.4 21.1
std. deviation 2.43 1.77 2.58

Flag leaf width (mm)

  'HY 271-SRW' '25R47' 'FT Wonder'
mean 11.9 11.9 13.3
std. deviation 0.928 0.822 1.078

Spike length (cm)

  'HY 271-SRW' '25R47' 'FT Wonder'
mean 6.52 6.33 8.10
std. deviation 0.389 0.560 0.746

Click on image for larger view
HY 271-SRW
Wheat: 'HY 271-SRW' (center) with reference varieties '25R47' (right) and 'FT Wonder' (left)

Click on image for larger view
HY 271-SRW
Wheat: 'HY 271-SWR' (center) with reference varieties '25R47' (bottom) and 'FT Wonder' (top)

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