Fieldstar

Wheat

Denomination: 'Fieldstar'
Previously Proposed Denomination: '97B64-M1B3'
Botanical Name: Triticum aestivum
Applicant/Holder: Agriculture & Agri-Food Canada, Winnipeg
Cereal Research Centre
195 Dafoe Road
Winnipeg, Manitoba
R3T 2M9
Canada
Breeder: Stephen Fox, Agriculture & Agri-Food Canada, Winnipeg, Manitoba
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: 2007-05-01
Application Number: 07-5904
Grant of Rights Date: 2009-05-14
Certificate Number: 3480
Grant of Rights Termination Date: 2027-05-14

Variety Description

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

Summary: 'Fieldstar' differs from the reference varieties, 'Superb' and 'McKenzie', in flag leaf length, anthocyanin colouration of the flag leaf auricles, plant height, anthocyanin colouration of the straw at maturity and spike length. The flag leaf of 'Fieldstar' is longer than that of 'McKenzie'. The anthocyanin colouration of the flag leaf auricles of 'Fieldstar' is absent or very weak whereas it is weak to medium in 'Superb'. 'Fieldstar' carries a gene for antibiosis resistance to orange blossom wheat midge while 'Superb' and 'McKenzie' do not. The plants of 'Fieldstar' are taller than those of 'Superb'. At maturity, the anthocyanin colouration of the straw of 'Fieldstar' is absent or very weak whereas it is weak to medium in 'McKenzie'. The spike of 'Fieldstar' is longer than that of both 'Superb' and 'McKenzie'.

Description:

PLANT: spring type, semi-erect to intermediate growth habit
SEEDLING: weak intensity of anthocyanin colouration of coleoptile, weak to medium pubescence on lower leaf sheaths, very weak pubescence on lower leaf blades

FLAG LEAF: low to medium frequency of plants with recurved/drooping flag leaves, glabrous blades and sheaths, no anthocyanin colouration of auricles, medium glaucosity of sheath

CULM NECK: medium glaucosity, weak curvature
STRAW: ranging from very thin to thick to very thick, no anthocyanin colouration at maturity

SPIKE: parallel-sided shape, medium density, erect at maturity, medium glaucosity, white at maturity, white awns present, awns medium in length in relation to length of spike, medium to slightly spreading awn attitude, sparse hairiness of convex surface of apical segment
LOWER GLUME: narrow to medium in width, medium length, very weak pubescence, straight to elevated shape of shoulder, narrow to medium shoulder width, slightly curved short beak, sparse internal hairs
LEMMA: straight to slightly curved beak

KERNEL: hard red type, medium red colour, small to medium size kernel, short to midlong, medium width, ovate shape, rounded cheek shape, midlong brush hairs, midsize germ, oval shape of germ, narrow to midwide and deep crease

Origin & Breeding History: 'Fieldstar' was derived from the cross McKenzie*3//BW174*2/Clark made at the Agriculture & Agri-Food Canada Cereal Research Centre, Winnipeg, Manitoba in 1997. The F2 progeny of the original cross, identified as '97B64', were grown as spaced plants at Glenlea in 1998 with individual spikes being selected and grown as F3 hills in a winter nursery in New Zealand. The F4 generation was grown as short rows at Glenlea where selection for resistance to midge may have occurred along with selection for agronomic traits and leaf and stem rust resistance. Yield testing occurred at the F6 generation followed by selection of spikes and increase of each spike in a winter nursery in order to produce sufficient seed at multiple locations. Following two years of testing in multi-location yield trials in 2002 and 2003, 'Fieldstar' was entered in the Central Bread Wheat Coop in 2004 as the major component of 'BW365' which consists of 90% 'Fieldstar' and 10% 'BW357'. 'Fieldstar' was tested as '97B64-M1B3'.

Tests & Trials: The tests and trials for 'Fieldstar' were conducted in Glenlea, Manitoba during the summer of 2006 and in Portage la Prairie, Manitoba during the summer of 2007. A 4 replicate randomized complete block design experiment was planted using 3.25 square metre harvested area plots, seeded at a rate of 269 seeds/square metre. Measured characteristics were based on a mean of two years, with 20 measurements taken per year.


Comparison tables for 'Fieldstar' with reference varieties 'Superb' and 'McKenzie'

Flag leaf length (cm)

  'Fieldstar' 'Superb' 'McKenzie'
mean 15.3 16.3 13.6
std. deviation 2.6 3.3 2.5

Plant height (cm)

  'Fieldstar' 'Superb' 'McKenzie'
mean 101.2 88.6 99.1
std. deviation 15.7 8.8 15.9

Spike length (cm)

  'Fieldstar' 'Superb' 'McKenzie'
mean 7.3 7.0 6.4
std. deviation 0.5 0.4 0.6

Click on image for larger view
Fieldstar
Wheat: 'Fieldstar' (right) with reference varieties 'Superb' (far left) and 'McKenzie' (centre right)