Denomination: 'Stella'
Botanical Name: Pisum sativum
Applicant/Holder: Agriculture & Agri-Food Canada, Lacombe
Lacombe Research Station
6000 C and E trail
Lacombe, Alberta
T4L 1W1
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
Tel: (403) 782-8126
Application Date: 2007-04-04
Application Number: 07-5837
Grant of Rights Date: 2009-05-14
Certificate Number: 3485
Date rights surrendered: 2013-08-01

Variety Description

Variety used for comparison: 'Reward'

Summary: 'Stella' differs from the reference variety, 'Reward' mainly in number of nodes, petiole length, stipule length and width, stipule flecking and pod length. 'Stella' has more nodes up to and including the first flowering node than 'Reward'. The petiole length of 'Stella' is shorter than that of 'Reward'. The stipules of 'Stella' are shorter and narrower than those of 'Reward'. Maximum density of flecking of 'Stella' is very sparse whereas it is medium in 'Reward'. The pods of 'Stella' are longer than those of 'Reward'.


PLANT: semi-leafless, forage type, stem fasciation absent, medium green at flowering, no anthocyanin colouration
STEM: medium to long, anthocyanin colouration of axil absent
STIPULE: normal development, very sparse flecking

FLOWER: medium to late flowering, medium to many flower bearing nodes per stem, one to two flowers per node, arched to strongly arched base of standard, pointed upper calyx lobe
POD: weak degree of curvature, concave direction of seed bearing suture, blunt distal part, light green immature seeds

DRY SEED: simple starch grain, yellow cotyledon, no black colour of hilum, ovoid in shape, absent or very weak wrinkling of cotyledon, weak to medium dimpling of cotyledons, medium in size

Origin & Breeding History: 'Stella', tested as 'ACY0301F', was developed at Agriculture and Agri-Food Canada from the cross, ('MP1338 x 'Baccara') X 'MP1794'. The original cross was made in 1998 at the Agriculture and Agri-Food Canada Research Station in Morden, Manitoba. 'MP1338' is a breeding line with normal leaves and yellow cotyledons. 'Baccara' is a field pea developed at Florimond-Desprez, France. 'MP1794' is a semi-leafless and powdery mildew resistant breeding line. 'Stella' was developed using pedigree selection in combination with single seed descent at the F3-F4 generations. Breeder seed of 'Stella' was derived from a single line at the F9 generation.

Tests & Trials: Tests and trials for 'Stella' were conducted at Lacombe, Alberta during the 2006 and 2007 growing seasons. Plots consisted of 4 replications of both the candidate and reference varieties planted in a randomized complete block design. Each replication measured 5 X 1 metre with 20 centimetre row spacing. Measured characteristics were based on 40 measurements taken each year.

Comparison tables for 'Stella' with reference variety 'Reward'

Number of nodes up to and including first flowering node

  'Stella' 'Reward'
mean 27.0 25.0
std. deviation 0.7 1.1

Petiole length (mm)

  'Stella' 'Reward'
mean 62.0 88.0
std. deviation 12.0 8.0

Stipule length (mm)

  'Stella' 'Reward'
mean 61.0 71.0
std. deviation 5.0 5.0

Stipule width (mm)

  'Stella' 'Reward'
mean 60.0 67.0
std. deviation 6.0 5.0

Pod length (mm)

  'Stella' 'Reward'
mean 67.0 64.0
std. deviation 3.0 3.6

Click on image for larger view
Pea: 'Stella' (right) with reference variety 'Reward' (left)

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