Denomination: 'Tristar'
Botanical Name: Trigonella foenum-graecum
Applicant/Holder: Agriculture & Agri-Food Canada, Lethbridge
Lethbridge Research Centre, 5403 - 1 Avenue, South
P.O. Box 3000
Lethbridge, Alberta
T1J 4B1
Breeder: Surya N. Acharya, Agriculture & Agri-Food Canada, Lethbridge, 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: 2004-05-31
Application Number: 04-4215
Grant of Rights Date: 2009-08-17
Certificate Number: 3557
Date rights surrendered: 2014-07-30

Variety Description

Variety used for comparison: 'Amber'

Summary: 'Tristar' differs from the reference variety, 'Amber' mainly in plant height, stem length, days to flowering, seed weight and seed colour. The plants of 'Tristar' are taller than those of 'Amber'. The stems of 'Tristar' are longer than those of 'Amber'. 'Tristar' flowers later than 'Amber'. The seed weight of 'Tristar' is lighter than that of 'Amber'.


PLOIDY: diploid

STEM: thick, slight pubescence

LEAVES: dark green, 100% ovate shaped leaflet, 100% trifoliate leaf expression

FLOWER: cream on 100% of the plants

ROOT: tap root, narrow, shallow depth

POD: sickle shape, slight pubescence

SEED: late maturing

QUALITY CHARACTERISTICS: Neutral Detergent Fibre (NDF) superior, Acid Detergent Fibre (ADF) inferior

Origin & Breeding History: 'Tristar', tested as L3314, was selected out of the Plant Gene Resources of Canada (PGRC) accession number CN19118, originally collected from the Shiraz area of Iran in 1940. A few seeds of this accession, along with other lines, was acquired in 1998. In 1999, seed was increased at Lethbridge, Alberta with field testing starting in 2000. L3314 was selected based on its abililty to yield high biomass. In 2002, single plants exhibiting good vigour were selected and bulked to produce 'Tristar'.

Tests & Trials: The tests and trials for 'Tristar' were conducted at the Agriculture and Agri-Food Canada Lethbridge Research Centre, Lethbridge, Alberta during the summers of 2005-2008. Trials were arranged using a randomized complete block design (RCBD) with 4-5 replicates per variety. Each replicate consisted of 10 rows measuring approximately 2 metres wide and 6 metres in length. Row spacing was 20 cm under irrigated conditions and 40 cm under rainfed conditions. The plots were seeded at 15 kg/ha for irrigated conditions and 10 kg/ha for rainfed conditions.

Comparison tables for 'Tristar' with reference variety 'Amber'

Early spring growth, plant height (cm)

  'Tristar' 'Amber'
mean 40 35
std. deviation 2.51 2.15

Days to flowering

  'Tristar' 'Amber'
mean 55 52
std. deviation 0.95 0.95

Seed weight (grams per 1000 mature seeds)

  'Tristar' 'Amber'
mean 14.3 15.6
std. deviation 0.08 0.12

Click on image for larger view
Fenugreek: 'Tristar' (top row, right) with reference variety 'Amber' (middle row, left)

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