Buffalo R2
| Denomination: | 'Buffalo R2' |
|---|---|
| Previously Proposed Denomination: | 'Varuna R2' |
| Botanical Name: | Glycine max |
| Applicant/Holder: |
Sollio Agriculture 19235, avenue Saint-Louis Saint-Hyacinthe, Quebec J2T 5J4 Canada |
| Breeder: |
Jérôme Auclair, Sollio Agriculture, Saint-Hyacinthe, Quebec |
| Application Date: | 2018-12-03 |
| Provisional Protection:: | 2018-12-03 |
| Application Number: | 18-9656 |
| Grant of Rights Date: | 2022-12-21 |
| Certificate Number: | 6714 |
| Grant of Rights Termination Date: | 2042-12-21 |
Variety Description
Varieties used for comparison: 'P005A27X', 'Dario R2X' and 'Salto R2'
Summary: The intensity of anthocyanin colouration on the hypocotyl of 'Buffalo R2' is strong whereas it is of medium intensity for 'Salto R2'. The pubescence on the middle third of the stem of 'Buffalo R2' is tawny whereas it is light tawny on 'P005A27X' and 'Salto R2'. The plants of 'Buffalo R2' begin flowering early while those of 'Salto R2' begin flowering mid-season. When 95% of the pods are ripe, the plants of 'Buffalo R2' are shorter than the plants of the reference varieties. The intensity of brown colour on the pod of 'Buffalo R2' is light whereas it is of medium intensity on the pods of 'Dario R2X' and 'Salto R2'. The plants of 'Buffalo R2' mature earlier than the plants of the reference varieties.
Description:
PLANT: oilseed type, indeterminate growth type, semi-erect branch attitude, tawny pubescence on middle third of main stem, begins flowering early, matures very early to early
HYPOCOTYL: strong intensity of anthocyanin colouration
LEAF: pointed ovate lateral leaflet
FLOWER: violet
POD: light brown
SEED: spherical flattened, yellow ground colour of testa
HILUM: dark brown
Origin & Breeding History: 'Buffalo R2' (experimental designation C4M17226 R2) originated from a cross between two proprietary selections conducted in 2012, in Tupperville, Ontario. A modified single seed descent method was used to develop the variety. In 2013, the F1 generation, grown in Tupperville, was harvested in bulk and individual plants selected from the F2 generation in 2014 in Saint-Simon, Quebec. In Saint-Hyacinthe, Quebec, row plots of the F3 generation were grown and selected in 2015 followed by plot evaluations from 2016 to 2018. 'Buffalo R2' was identified at the F5 generation in 2017. The selection criteria were based on a visual assessment of lodging resistance, number of pods per plant, pod density on the plant (internode length), absence of disease symptoms and protein content.
Tests & Trials: The comparative trials for 'Buffalo R2' were conducted at a production farm in Saint-Simon, Quebec. The trials were planted in a RCB design with 4 replicates per variety during the 2019 and 2021 growing seasons. Each 6.0 square metre plot consisted of 4 rows, each 4.5 metres long with a row spacing of 0.38 metres. The seeding density was such that it resulted in a total of 40 plants per variety per square metre. For each variety, the plant height was based on 20 measurements. Mean differences were significant at the 5% probability level based on a Tukey test.
Comparison tables for 'Buffalo R2' with reference varieties 'P005A27X', 'Dario R2X' and 'Salto R2'
Plant height (cm)
| 'Buffalo R2' | 'P005A27X' | 'Dario R2X' | 'Salto R2' | |
|---|---|---|---|---|
| mean 2019 | 62.8 | 66.6 | 77.4 | 74.6 |
| std. deviation 2019 | 3.3 | 3.1 | 3.2 | 3.3 |
| mean 2021 | 55.9 | 62.4 | 67.4 | 64.6 |
| std. deviation 2021 | 3.3 | 3.2 | 3.8 | 3.7 |
Number of days to maturity (from planting to maturity)
| 'Buffalo R2' | 'P005A27X' | 'Dario R2X' | 'Salto R2' | |
|---|---|---|---|---|
| mean 2019 | 98 | 107 | 106 | 115 |
| mean 2021 | 112 | 116 | 115 | 124 |
Click on image for larger view
Soybean: 'Buffalo R2' (left) with reference varieties 'Salto R2' (centre left), 'Dario R2X' (centre right) and 'P005A27X' (right)
Click on image for larger view
Soybean: 'Buffalo R2' (top left) with reference varieties 'Salto R2' (top right), 'P005A27X' (bottom left) and 'Dario R2X' (bottom right)
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