4PYYM82B
| Denomination: | '4PYYM82B' |
|---|---|
| Botanical Name: | Brassica napus |
| Applicant/Holder: |
Pioneer Hi-Bred International, Inc. 8305 NW, 62nd Avenue P.O. Box 7060 Johnston, Iowa 50131 United States of America |
| Breeder: |
Scott McClinchey, Pioneer Hi-Bred Production Company, Caledon, Ontario |
| Agent in Canada: |
Pioneer Hi-Bred Production Company 240, 115 Quarry Park Road SE Calgary, Alberta T2C 5G9 Canada Tel: 306-203-4895 |
| Application Date: | 2023-05-02 |
| Provisional Protection: | 2023-05-02 |
| Application Number: | 23-11326 |
Variety Description
Variety used for comparison: 'NS5536BC'
Summary: The silique of ‘4PYYM82B' has a longer beak than that of ‘NS5536BC'. At maturity, the plants of ‘4PYYM82B' are shorter than those of ‘NS5536BC'.
Description:
PLANT: male fertile inbred line, open pollinated spring type, short at maturity
COTYLEDON: medium width
LEAF: medium green, few lobes, rounded margin, shallow margin indentations, medium length, narrow, short petiole
FLOWER PETAL: yellow, not touching petal spacing
ANTHER: pollen production present
SILIQUE: semi-erect attitude, short to medium length, medium to wide, medium to long beak, short pedicel
Origin & Breeding History: ‘4PYYM82B' is a maintainer inbred line developed by Pioneer Hi-Bred International, Inc. using a pedigree method of plant breeding. The variety originated from a complex cross between four proprietary inbred lines initiated in 2009 in Caledon, Ontario, Canada. Individual F5 and F6 lines were evaluated in nurseries in Caledon, Ontario in 2011 and 2012. In 2014, one F9 line designated as ‘4PYYM82B' was selected based on plant vigour, time of flowering and pod development, glucosinolate levels, saturated fats, and oil content. Breeder seed production commenced in 2021.
Tests & Trials: The comparative trials for ‘4PYYM82B' were conducted during the 2022 and 2023 growing seasons in Saskatoon, Saskatchewan. The trial included 3 replicates. The candidate and reference variety were sown side by side in the first replicate whereas varieties in the second and third replicate were completely randomized. The plots consisted of 2 rows that were 3 metres in length with spacing of 50 cm between rows. The planting density of 26 seeds per metre resulted in a total of 468 plants per variety per year. The measured characteristics were based on 30 measurements per variety per year except for silique characteristics which were based on 60 measurements per variety per year. Mean differences were significant at the 2% probability level based on LSD values.
Comparison tables for '4PYYM82B' with reference variety 'NS5536BC'
Beak length (mm)
| '4PYYM82B' | 'NS5536BC' | |
|---|---|---|
| mean 2022 (LSD=0.60) | 8.9 | 7.8 |
| std. deviation 2022 | 2.0 | 2.1 |
| mean 2023 (LSD=0.44) | 8.6 | 5.9 |
| std. deviation 2023 | 2.7 | 1.6 |
Plant height (at maturity) (cm)
| '4PYYM82B' | 'NS5536BC' | |
|---|---|---|
| mean 2022 (LSD=5.39) | 80.6 | 98.0 |
| std. deviation 2022 | 10.6 | 13.4 |
| mean 2023 (LSD=4.04) | 79.8 | 93.0 |
| std. deviation 2023 | 10.5 | 9.7 |
Click on image for larger view
Canola: ‘4PYYM82B' (left) with reference variety ‘NS5536BC' (right)
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