Thunderbird

Pea

Denomination: 'Thunderbird'
Botanical Name: Pisum sativum
Applicant/Holder: Agriculture & Agri-Food Canada, Lacombe
Lacombe Research Station
6000 C and E trail
Lacombe, Alberta
T4L 1W1
Canada
Breeder: Deng-jin Bing, Agriculture & Agri-Food Canada, Lacombe, 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: 2006-02-15
Application Number: 06-5395
Grant of Rights Date: 2007-11-16
Certificate Number: 2987
Grant of Rights Termination Date: 2025-11-16

Variety Description

Variety used for comparison: 'Eclipse'

Summary: 'Thunderbird' is a yellow cotyledon field pea which has taller plants and shorter and narrower stipules than the reference variety 'Eclipse'. The stipules of 'Thunderbird' have very sparse flecking, whereas the stipules of 'Eclipse' have moderate flecking. 'Thunderbird' matures slightly later than 'Eclipse' and has smaller seeds.

Description:

PLANT: no stem fasciation, green colour, no anthocyanin colouration
STEM: medium length vine, no anthocyanin colouration of axil

LEAF: semi-leafless
STIPULE: weak waxiness on upper surface, weak dentation, normal development, not-rabbit eared, very sparse flecking

FLOWER: mid-to-late season, medium to many flower bearing nodes per stem, one to two flowers per node
STANDARD: white, arched base
UPPER CALYX LOBE: acuminate to pointed apex
PEDUNCLE: short length

POD: no thickened wall, very weak concave curvature, blunt distal part, green colour, medium green immature seeds
SEED: medium size, simple starch grain, yellow cotyledon, no black hilum, ovoid shape, no wrinkling of cotyledon, very low frequency dimpled cotyledons, mid-to-late season maturity

DISEASE REACTION: resistant to powdery mildew (Erysiphe polygoni), and moderately susceptible to mycosphaerella blight (Mycosphaerella pinodes)

Origin & Breeding History: 'Thunderbird', which was tested as MP1826, was developed at Agriculture and Agri-Food Canada from the cross 'Carneval' x MP1566. 'Carneval' was a semi-leafless yellow cotyledon field pea vairety developed by Svalof-Weibull, Sweden. It was segregating for powdery mildew resistance and had good lodging resistance. MP1566, derived from the cross 'Montana' x 'Miko', was a high yielding, semi-leafless yellow cotyledon breeding line developed at the Agriculture and Agri-Food Canada Research Station, Morden, Manitoba. MP1566 was susceptible to powdery mildew. The breeding method for 'Thunderbird' was pedigree selection in combination with single seed descent. The breeder seed of 'Thunderbird' was derived from a single line at the F9 generation.

Tests & Trials: Trials for 'Thunderbird' were conducted during the summers of 2005 and 2006 at the Agriculture and Agri-Food Canada Research Centre, Morden, Manitoba. The trials consisted of 4 replications in a randomized block design. Each plot was 5 metres x 1 metre with 20cm between rows. The seeding rate was 85 germinating seeds per square metre.


Comparison tables for 'Thunderbird' with reference variety 'Eclipse'

Plant height (cm)

  'Thunderbird' 'Eclipse'
mean 60 54
std. deviation 2.5 2.9

Stipule length (mm)

  'Thunderbird' 'Eclipse'
mean 39 56
std. deviation 2.9 5.6

Stipule width (mm)

  'Thunderbird' 'Eclipse'
mean 28 42
std. deviation 2.1 3.8

Pod length (mm)

  'Thunderbird' 'Eclipse'
mean 69 67
std. deviation 3.2 3.5

Pod width (mm)

  'Thunderbird' 'Eclipse'
mean 13 12
std deviation 0.6 0.7

Seed weight

  'Thunderbird' 'Eclipse'
grams per 1000 seeds 220 240

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Thunderbird
Pea: 'Thunderbird' (MP1826)

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Thunderbird
Pea: Reference variety 'Eclipse'

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