Kuma
| Denomination: | 'Kuma' |
|---|---|
| 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: | 2022-03-16 |
| Provisional Protection: | 2022-03-16 |
| Application Number: | 22-10856 |
Variety Description
Varieties used for comparison: 'Auriga' and 'Bennie'
Summary: When 95% of pods are ripe, the plants of ‘Kuma' are taller than the plants of both reference varieties. The seed of ‘Kuma' is medium sized whereas the seed of ‘Bennie' is small. The plants of ‘Kuma' mature earlier than the plants of ‘Auriga' and later than those of ‘Bennie'.
Description:
HYPOCOTYL: medium intensity of anthocyanin colouration
PLANT: indeterminate growth type, erect to semi-erect growth habit, tawny pubescence on middle third of main stem, begins flowering early to mid-season, matures mid-season
LEAF: medium green
LATERAL LEAFLET: pointed ovate, medium size
FLOWER: violet
POD: medium brown
SEED: medium size, spherical flattened shape, yellow ground colour of testa
HILUM: yellow
FUNICLE: same colour as the testa
Origin & Breeding History: 'Kuma' (experimental designations C4M20365 CONV, T1702-01, and C411AA002.C03.F005) originated from a cross conducted between ‘Jari' and ‘Krios' in 2011 in Saint-Hyacinthe, Quebec, Canada. The modified single seed descent method was used to develop the variety. In 2012, F1-F4 generations were grown in Santa Isabel, Puerto Rico and further advanced. In 2013, the F5 generation was grown in Saint-Hyacinthe, Quebec and selected based on a visual assessment of yield and seed size. From 2015 to 2021, 'Kuma' was tested in replicated field trials. Breeder seed was established in 2019 in Saint-Hyacinthe, Quebec.
Tests & Trials: The comparative trials for ‘Kuma' were conducted at the crop production research farm of Sollio Agriculture in Saint-Hyacinthe, Quebec. The trials were planted in an RCB design with 4 replicates per variety during the 2023 and 2024 growing seasons. Each 5 square metre plot consisted of 4 rows, each 4.55 metres long, with a row spacing of 0.36 metres. The seeding density resulted in a total of over 34 plants per variety per square metre for a total of 680 plants per variety per year. Plant height measurements were based on a minimum of 20 measurements per variety per year. Mean differences were significant at the 5% probability level based on a Student's t-test.
Comparison tables for 'Kuma' with reference varieties 'Auriga' and 'Bennie'
Plant height (cm)
| 'Kuma' | 'Auriga' | 'Bennie' | |
|---|---|---|---|
| mean (2023) | 117.7 | 109.0 | 101.5 |
| std. deviation (2023) | 4.0 | 4.8 | 4.5 |
| mean (2024) | 87.2 | 65.2 | 63.1 |
| std. deviation (2024) | 2.6 | 3.4 | 2.7 |
Days to maturity
| 'Kuma' | 'Auriga' | 'Bennie' | |
|---|---|---|---|
| mean (2023) | 128 | 131 | 119 |
| mean (2024) | 117 | 120 | 111 |
Click on image for larger view
Soybean: 'Kuma' (left) with reference varieties 'Auriga' (centre) and 'Bennie' (right)
Click on image for larger view
Soybean: 'Kuma' (centre) with reference varieties 'Bennie' (left) and 'Auriga' (right)
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