HY 300-HRW


Denomination: 'HY 300-HRW'
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: 2011-02-22
Application Number: 11-7172
Protective direction granted: 2011-02-22
Grant of Rights Date: 2014-10-24
Certificate Number: 4925
Grant of Rights Termination Date: 2032-10-24

Variety Description

Varieties used for comparison: 'Warthog' and 'Wentworth'

Summary: 'HY 300-HRW' has a glabrous sheath of the lower leaf and flag leaf at booting whereas 'Wentworth' has sparse to medium pubescence of the sheath of the lower leaf and sparse pubescence of the flag leaf. The glaucosity of the flag leaf sheath and culm of 'HY 300-HRW' are medium whereas they are strong to very strong for 'Warthog'. 'HY 300-HRW' heads earlier than 'Warthog'. At maturity, the spike attitude of 'HY 300-HRW' is inclined to nodding whereas it is erect for 'Warthog' and erect to inclined for 'Wentworth'. The spike of 'HY 300-HRW' has a medium to very dense hairiness of the convex surface of the apical rachis segment whereas it is very sparse to sparse for 'Wentworth'. 'HY 300-HRW' has a medium extent of internal hairs on the lower glume whereas it is sparse for 'Wentworth'. The 1000 kernel weight of 'HY 300-HRW' is less than 'Wentworth'. 'HY 300-HRW' is resistant to Black point and smudge (Cochliobolus sativus, Alternaria species Pseudomonas syrangea pv. atrofaciens) whereas 'Warthog' is moderately susceptible and 'Wentworth' is moderately susceptible to susceptible. 'HY 300-HRW' is moderately susceptible to Fusarium head blight (Fusarium graminearum, Fusarium species) whereas 'Warthog' is susceptible and 'Wentworth' is highly susceptible.


PLANT: common hard red winter type, semi-erect growth habit at the 5-9 tiller stage, early to medium maturity

SEEDLING (4 LEAF STAGE): absent or very weak intensity of anthocyanin colouration of the coleoptile, glabrous sheath of the lower leaf and sparse pubescence of the blade of the lower leaf

FLAG LEAF (AT BOOTING): low to high frequency of plants with recurved flag leaves, very strong intensity of anthocyanin colouration of the auricles, medium glaucosity of the sheath, glabrous sheath and sparse to medium pubescence of the blade

SPIKE: medium glaucosity at heading, tapering to parallel sided shape in profile, lax to medium density, awnlets present, awnlets shorter than the length of the spike
SPIKE (AT MATURITY): white to yellow, incline to nodding attitude, medium to very dense hairiness of convex surface of apical rachis segment
CULM: medium glaucosity at heading, weakly curved neck
STRAW (AT MATURITY): thin pith in cross-section, no anthocyanin colouration

LOWER GLUME: medium width, medium length, medium extent of internal hairs
LOWER GLUME SHOULDER: narrow to medium width, slightly sloping to straight shape
LOWER GLUME BEAK: very short to short length, straight to slightly curved
LOWEST LEMMA: slightly curved beak
KERNEL: hard red type, light to medium red colour, medium size, medium length, narrow to medium width, broad elliptical to elliptical, rounded to angular cheek shape, medium to long brush hairs, oval to broad elliptical large sized germ, narrow to wide crease, shallow to medium depth crease

AGRONOMICS: good winter survival, 36.5 grams per 1000 kernels, 12.3% protein

DISEASE REACTION: resistant to Black Point & smudge (Cochliobolus sativa, Alternaria species, Pseudomonas syringae pv. atrofaciens) and Barley Yellow Dwarf virus, resistant to moderately resistant to Leaf rust (Puccinia triticina), moderately resistant to Spindle streak mosaic virus, moderately resistant to moderately susceptible to Septoria tritici blotch (Septoria tritici) and Stripe rust (Puccinia striiformis) and moderately susceptible to Fusarium head blight (Fusarium graminearum, Fusarium species)

Origin & Breeding History: 'HY 300-HRW' (experimental designation TW 300-001) is a doubled haploid line derived from a cross between 'Waldorf' / TW 97407 during 1999 to 2000 in Nairn, Ontario, where 'Waldorf' = 'Fundulea'/Karl-92 and TW 97407 = 'Ruby'/Semu1841. The doubled haploid maize hybridization breeding method was used to develop this variety. The Y2 was planted into the nursery in the fall of 2001 and selected in the summer of 2002 based on the yield, seed, agronomic and quality characteristics. TW300-001 was entered into a single replicate trial in the fall of 2002 and subsequent yield evaluations through 2007. Later, two years (2005-2006, 2006-2007) in the Orthogonal Hard Wheat Trial (OCCC) were completed.

Tests & Trials: Test and trials for 'HY 300-HRW' were conducted during the 2011 and 2012 growing seasons in Nairn, Ontario. Plot size was 4.14 meters squared and consisted of 6 rows. The row length was 3.0 metres with 18 cm spacing between rows. There were 4 replicates in an RCB Design. Measured characteristics were based on 20 measurements per variety per year.

Comparison table for 'HY 300-HRW' with reference varieties 'Warthog' and 'Wentworth'

Days to heading (when 50% of the heads are fully emerged)

  'HY 300-HRW' 'Warthog' 'Wentworth'
mean 149.5 151.8 150.8

Click on image for larger view
HY 300-HRW
Wheat: 'HY 300-HRW' (centre) with the reference varieties 'Warthog' (left) and 'Wentworth' (right)

Click on image for larger view
HY 300-HRW
Wheat: 'HY 300-HRW' (centre) with the reference varieties 'Wentworth' (left) and 'Warthog' (right)

Date modified: