AAC Harrison
| Denomination: | 'AAC Harrison' |
|---|---|
| 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 c/o Shannon Whyte 107 Science Place Saskatoon, Saskatchewan S7N 0X2 Canada Tel: (204) 999-9887 |
| Application Date: | 2024-04-29 |
| Provisional Protection: | 2024-04-29 |
| Application Number: | 24-11668 |
| Grant of Rights Date: | 2025-11-04 |
| Certificate Number: | 7467 |
| Grant of Rights Termination Date: | 2045-11-04 |
Variety Description
Varieties used for comparison: 'AAC Profit' and 'Earlystar'
Summary: The stipule of ‘AAC Harrison' is narrower than that of ‘Earlystar'. The maximum width of the standard on the flower of ‘AAC Harrison' is wider than that of ‘Earlystar'. The base of the standard on the flower of ‘AAC Harrison' is moderately arched while that of ‘Earlystar' is level. The peduncle of ‘AAC Harrison' is shorter than that of ‘AAC Profit'. The maximum width of the pod of ‘AAC Harrison' is broader than those of the reference varieties. The thousand seed weight of ‘AAC Harrison' is greater than that of ‘Earlystar'. The seed of ‘AAC Harrison' matures later than that of ‘Earlystar'.
Description:
PLANT: field type, no anthocyanin colouration, no stem fasciation, green foliage, flowers mid-season
STEM: no anthocyanin colouration of axil, medium length at maturity, many nodes up to and including the first fertile node
PETIOLE: medium to long
LEAF: leaflets absent
STIPULE: medium length and width, very sparse to medium density of flecking
PEDUNCLE: medium to long from stem to first pod
FLOWER: maximum of two per node
STANDARD: medium width, moderately arched base
UPPER SEPAL: acuminate apex
POD: medium length and width, entire parchment, blunt shape of distal part, absent or very weak curvature, green, medium number of ovules
IMMATURE SEED: light green
DRY SEED: ellipsoid, simple starch grains, yellow cotyledon, medium to large weight, matures mid to late season
HILUM: same colour as testa
Origin & Breeding History: ‘AAC Harrison' (experimental designation P1209-2119) originated from the cross between the varieties ‘Earlystar' and ‘AAC Profit' conducted in 2012 at the Agriculture and Agri-Food Canada, Lacombe Research and Development Centre in Lacombe, Alberta. The variety was advanced using a pedigreed selection in combination with a modified single seed decent method of plant breeding. One F7 line, designated P1209-2119, was selected in 2017 based on maturity time, pod canopy, plant height, lodging resistance and disease resistance and again assessed and selected in 2018 based on yield and maturity time. The line was further tested in 2019 in yield trials in multiple locations in Western Canada and subsequently entered in the Western Canada Field Pea Cooperative Variety Registration Test in 2021 and 2022. Breeder seed was established from a single F13 line in 2023.
Tests & Trials: The comparative trials for ‘AAC Harrison' were conducted at the Agriculture and Agri-Food Canada, Lacombe Research and Development Centre in Lacombe, Alberta during the 2023 and 2024 growing seasons. The trials consisted of 4 replicates in a RCB design. Each replicate consisted of 4 rows, with each row measuring 5 metres long and spaced 25 cm apart. A planting density of 85 viable seeds per square metre resulted in approximately 1700 plants per variety per year. The measured characteristics were based on 20 measurements per variety per year except for the 1000 seed weight where 4 measurements were taken per variety per year. The mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.
Comparison tables for 'AAC Harrison' with reference varieties 'AAC Profit' and 'Earlystar'
Stipule width (at the second flowering node) (cm)
| 'AAC Harrison' | 'AAC Profit' | 'Earlystar' | |
|---|---|---|---|
| mean 2023 | 4.3 | 4.2 | 4.6 |
| std. deviation 2023 | 0.27 | 0.43 | 0.37 |
| mean 2024 | 3.6 | 3.5 | 3.9 |
| std. deviation 2024 | 0.42 | 0.37 | 0.29 |
Maximum width of flower standard (cm)
| 'AAC Harrison' | 'AAC Profit' | 'Earlystar' | |
|---|---|---|---|
| mean 2023 | 3.3 | 3.1 | 3.0 |
| std. deviation 2023 | 0.29 | 0.27 | 0.11 |
| mean 2024 | 2.5 | 2.4 | 2.2 |
| std. deviation 2024 | 0.17 | 0.24 | 0.12 |
Peduncle length (from stem to first pod) (mm)
| 'AAC Harrison' | 'AAC Profit' | 'Earlystar' | |
|---|---|---|---|
| mean 2023 | 84.3 | 99.6 | 83.7 |
| std. deviation 2023 | 12.2 | 16.5 | 13.6 |
| mean 2024 | 58.0 | 65.1 | 55.5 |
| std. deviation 2024 | 8.8 | 11.5 | 9.9 |
Pod maximum width (at second fertile node) (cm)
| 'AAC Harrison' | 'AAC Profit' | 'Earlystar' | |
|---|---|---|---|
| mean 2023 | 1.45 | 1.32 | 1.28 |
| std. deviation 2023 | 0.07 | 0.09 | 0.06 |
| mean 2024 | 1.34 | 1.28 | 1.18 |
| std. deviation 2024 | 0.06 | 0.07 | 0.06 |
Seed weight (grams per thousand seeds) (g)
| 'AAC Harrison' | 'AAC Profit' | 'Earlystar' | |
|---|---|---|---|
| mean 2023 | 254.0 | 230.0 | 217.0 |
| std. deviation 2023 | 3.0 | 6.7 | 5.3 |
| mean 2024 | 239.3 | 252.0 | 212.8 |
| std. deviation 2024 | 12.5 | 7.6 | 5.3 |
Days to seed maturity (number of days from planting to seed maturity)
| 'AAC Harrison' | 'AAC Profit' | 'Earlystar' | |
|---|---|---|---|
| mean 2023 | 99 | 99.3 | 92 |
| mean 2024 | 85.5 | 85.8 | 82 |
Click on image for larger view
Pea: ‘AAC Harrison' (left) with reference varieties ‘AAC Profit' (centre) and ‘Earlystar' (right)
Click on image for larger view
Pea: ‘AAC Harrison' (left) with reference varieties ‘AAC Profit' (centre) and ‘Earlystar' (right)
Click on image for larger view
Pea: ‘AAC Harrison' (left) with reference varieties ‘AAC Profit' (centre) and ‘Earlystar' (right)
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