AAC Savka
| Denomination: | 'AAC Savka' |
|---|---|
| Botanical Name: | Avena sativa |
| Applicant/Holder: |
Agriculture & Agri-Food Canada, Ottawa Ottawa Research and Development Centre Room 1093A - 960 Carling Avenue Ottawa, Ontario K1A 0C6 Canada |
| Breeder: |
Weikai Yan, Agriculture & Agri-Food Canada, Ottawa, Ontario |
| 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: | 2024-05-01 |
| Provisional Protection: | 2024-05-01 |
| Application Number: | 24-11681 |
| Grant of Rights Date: | 2025-11-04 |
| Certificate Number: | 7476 |
| Grant of Rights Termination Date: | 2045-11-04 |
Variety Description
Varieties used for comparison: 'CS Camden' and 'AAC Clyde'
Summary: At the 5-9 tiller stage, the plants of ‘AAC Savka' have an intermediate growth habit while the plants of ‘CS Camden' have a semi-erect growth habit. At booting, the leaves of ‘AAC Savka' have a weak intensity of glaucosity while the leaves of ‘CS Camden' have medium intensity of glaucosity. The flag leaf of ‘AAC Savka' is longer than that of ‘CS Camden' and wider and longer than that of ‘AAC Clyde'. The stem pubescence above and below culm node of ‘AAC Savka' is greater than that of the reference varieties. After heading at the green stage, the plants of ‘AAC Savka' are taller than those of ‘CS Camden' and shorter than those of ‘AAC Clyde'. The angle between the rachis and dominant side branch of the panicle of ‘AAC Savka' is from 30 to 45 degrees whereas that of ‘CS Camden' is less than 30 degrees. At maturity, the lemma colour in the central third of the panicle of ‘AAC Savka' is yellow whereas that of ‘CS Camden' is white. The kernels of ‘AAC Savka' are longer than those of the reference varieties. Plants of ‘AAC Savka' have a good lodging resistance while those of ‘AAC Clyde' have a poor lodging resistance.
Description:
PLANT: hulled spring type, intermediate growth habit at 5 to 9 tiller stage, medium frequency of plants with recurved flag leaves at booting
STEM: dense pubescence above and sparse pubescence below upper culm node
LOWER LEAF: sparse pubescence on sheath, absent to very sparse pubescence on blade at the 5 to 9 tiller stage
LEAF (AT BOOTING): dark green, absent to very sparse pubescence on margin of leaf below flag leaf, weak glaucosity at green stage
PANICLE (SHORTLY AFTER HEADING): equilateral/symmetrical orientation of branches, medium density, semi-erect attitude of branches, 30 to 45 degree angle between rachis and dominant side branches
SPIKELET: two to three grains, semi-abscission separation
RACHILLA: medium length between primary and secondary floret, absent or very short length of grooves
LEMMA: yellow at maturity, absent or very sparse pubescence on lateral and dorsal surface, absent to very weak tendency to be awned
GROAT: medium density of pubescence
SCUTELLUM: pointed tip, medium size
AGRONOMIC CHARACTERISTICS: good lodging resistance
Origin & Breeding History: ‘AAC Savka' (experimental designation ‘OA1689-4VS') originated from a cross conducted between ‘CS Camden' and a line designated as ‘OA1426-2-5' at the Agriculture and Agri-Food Canada, Ottawa Research and Development Centre in Ottawa, Ontario in 2016. It was selected using a pseudo single seed decent breeding method. Early generation visually selected and genomically selected lines were sent to New Zealand for winter increases. Selection criteria included yield, agronomic and quality data. One visually selected line was entered into registration trials in Quebec from 2021-2023. Breeder seed was created in the F8 generation in 2024.
Tests & Trials: The comparative trials for ‘AAC Savka' were conducted at Agriculture and Agri-Food Canada, Ottawa Research and Development Centre in Ottawa, Ontario in the 2023 and 2024 growing seasons. The trials were conducted using a RCB design consisting of 3 replications per variety. Each plot consisted of 6 rows spaced 18 cm apart, with a row length of 3.8 metres. The planting density of 350 seeds per square metre resulted in approximately 900 plants per variety per year. Measured characteristics were based on a minimum of 20 measurements per variety per year. Mean differences were significant at the 5% probability level based on a paired Student's t-test.
Comparison tables for 'AAC Savka' with reference varieties 'CS Camden' and 'AAC Clyde'
Flag leaf width (mm)
| 'AAC Savka' | 'CS Camden' | 'AAC Clyde' | |
|---|---|---|---|
| mean (2023) | 12 | 11.3 | 9.9 |
| std. deviation (2023) | 1.6 | 2.2 | 2.0 |
| mean (2024) | 9 | 8.8 | 8.3 |
| std. deviation (2024) | 1.08 | 1.88 | 1.03 |
Flag leaf length (cm)
| 'AAC Savka' | 'CS Camden' | 'AAC Clyde' | |
|---|---|---|---|
| mean (2023) | 12 | 11.3 | 9.9 |
| std. deviation (2023) | 1.6 | 2.2 | 2.0 |
| mean (2024) | 23.5 | 18.3 | 20.5 |
| std. deviation (2024) | 2.8 | 2.3 | 2.7 |
Days to heading (when 50% of panicles are fully emerged)
| 'AAC Savka' | 'CS Camden' | 'AAC Clyde' | |
|---|---|---|---|
| 2023 | 53 | 49 | 56 |
| 2024 | 54 | 51 | 59 |
Plant height (culm plus panicle) (cm)
| 'AAC Savka' | 'CS Camden' | 'AAC Clyde' | |
|---|---|---|---|
| mean (2023) | 84.6 | 76.5 | 93.1 |
| std. deviation (2023) | 3.0 | 5.5 | 5.4 |
| mean (2024) | 84.7 | 75.3 | 91.6 |
| std. deviation (2024) | 3.5 | 4.2 | 3.0 |
Kernel length (primary grain) (mm)
| 'AAC Savka' | 'CS Camden' | 'AAC Clyde' | |
|---|---|---|---|
| mean (2023) | 13.1 | 11.5 | 11.3 |
| std. deviation (2023) | 0.8 | 0.8 | 0.5 |
| mean (2024) | 13.3 | 11.7 | 11.1 |
| std. deviation (2024) | 0.8 | 0.6 | 0.8 |
Click on image for larger view
Oat: 'AAC Savka' (centre) with reference varieties 'CS Camden' (left) and 'AAC Clyde' (right)
Click on image for larger view
Oat: 'AAC Savka' (centre) with reference varieties 'CS Camden' (left) and 'AAC Clyde' (right)
Click on image for larger view
Oat: 'AAC Savka' (centre) with reference varieties 'CS Camden' (left) and 'AAC Clyde' (right)
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