OAC Union
| Denomination: | 'OAC Union' |
|---|---|
| Botanical Name: | Glycine max |
| Applicant/Holder: |
University of Guelph Germplasm Research Innovation Office Building #92, 50 Stone Road East Guelph, Ontario N1G 2W1 Canada |
| Breeder: |
Eskandari Milad, University of Guelph, Ridgetown Campus, Ridgetown, Ontario |
| Application Date: | 2022-01-22 |
| Provisional Protection: | 2022-01-22 |
| Application Number: | 22-10785 |
| Grant of Rights Date: | 2025-11-13 |
| Certificate Number: | 7531 |
| Grant of Rights Termination Date: | 2045-11-13 |
Variety Description
Varieties used for comparison: 'OAC Malory' and 'OAC Avatar'
Summary: The plants of ‘OAC Union' have a semi-determinate growth type whereas the plants of the reference varieties have an indeterminate growth type. When 95% of the pods are ripe, the plants of ‘OAC Union' are shorter than those of ‘OAC Malory'. When 50% of the plants are flowering, the terminal and lateral leaflets of ‘OAC Union' are wider than those of the reference varieties. At maturity, the seed of ‘OAC Union' is longer than that of ‘OAC Avatar'. The seed weight of ‘OAC Union' is greater than that of OAC Avatar'.
Description:
HYPOCOTYL: medium intensity of anthocyanin colouration
PLANT: semi-indeterminate growth type, grey pubescence on middle third of main stem, begins flowering mid-season, matures mid to late season
LEAF: medium green upper side
TERMINAL LEAFLET: ovoid, medium to large size
LATERAL LEAFLET: pointed ovate, medium to large size
FLOWER: violet
POD: medium brown
SEED: medium sized, spherical flattened, weak glaucosity, yellow ground colour of testa, opaque testa
HILUM: yellow, funicle same colour as testa
Origin & Breeding History: ‘OAC Union' (experimental designation ‘SC 6218N') was developed at the University of Guelph, Ridgetown Campus in Ridgetown, Ontario using a single seed descent breeding method. The variety originated from a cross between the variety ‘OAC Prosper' and ‘S18-R6' conducted in 2013. The variety was advanced from the F1 to the F4 generation where a single plant was selected based on maturity and agronomic traits in 2015. The variety was designated ‘SC 6218N' and tested in multiple trials from 2018 to 2021 in Ontario.
Tests & Trials: The comparative trials of ‘OAC Union' were conducted in St. Thomas, Ontario during the 2022 and 2023 growing seasons. The trial included 3 replicates per variety arranged in an RCB design. Each plot consisted of a 9.14 meter row with approximately 300 plants per variety per year. Measured characteristics were based on 20 measurements per variety per year, except for seed weight which was based on a minimum of 3 measurements per variety per year. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.
Comparison tables for 'OAC Union' with reference varieties 'OAC Malory' and 'OAC Avatar'
Plant height (when 95% of the pods are ripe) (cm)
| 'OAC Union' | 'OAC Malory' | 'OAC Avatar' | |
|---|---|---|---|
| mean (2022) | 46.0 | 58.4 | 56.9 |
| std. deviation (2022) | 3.80 | 3.41 | 5.64 |
| mean (2023) | 48.3 | 52.3 | 47.7 |
| std. deviation (2023) | 4.02 | 6.75 | 7.16 |
Terminal leaflet width (when 50% of the plants are flowering) (cm)
| 'OAC Union' | 'OAC Malory' | 'OAC Avatar' | |
|---|---|---|---|
| mean (2022) | 8.2 | 7.1 | 7.3 |
| std. deviation (2022) | 0.31 | 0.44 | 0.57 |
| mean (2023) | 6.3 | 5.3 | 5.0 |
| std. deviation (2023) | 0.69 | 0.38 | 0.38 |
Lateral leaflet width (when 50% of the plants are flowering) (cm)
| 'OAC Union' | 'OAC Malory' | 'OAC Avatar' | |
|---|---|---|---|
| mean (2022) | 8.1 | 7.4 | 7.2 |
| std. deviation (2022) | 0.53 | 0.49 | 0.74 |
| mean (2023) | 5.9 | 5.3 | 4.7 |
| std. deviation (2023) | 0.65 | 0.42 | 0.49 |
Seed length (mm)
| 'OAC Union' | 'OAC Malory' | 'OAC Avatar' | |
|---|---|---|---|
| mean (2022) | 8.4 | 7.9 | 7.7 |
| std. deviation (2022) | 0.36 | 0.40 | 0.40 |
| mean (2023) | 8.1 | 8.4 | 7.4 |
| std. deviation (2023) | 0.38 | 0.23 | 0.26 |
Seed weight (grams per 100 seeds) (g)
| 'OAC Union' | 'OAC Malory' | 'OAC Avatar' | |
|---|---|---|---|
| mean (2022) | 20.6 | 18.2 | 19.2 |
| std. deviation (2022) | 0.29 | 0.12 | 0.26 |
| mean (2023) | 22.5 | 21.9 | 20.3 |
| std. deviation (2023) | 0.25 | 0.67 | 0.21 |
Click on image for larger view
Soybean: 'OAC Union' (left) with reference varieties 'OAC Malory' (centre) and 'OAC Avatar' (right)
Click on image for larger view
Soybean: 'OAC Union' (left) with reference varieties 'OAC Malory' (centre) and 'OAC Avatar' (right)
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