4PWSP65R
| Denomination: | '4PWSP65R' |
|---|---|
| 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: |
Chad Koscienly, Pioneer Hi-Bred International, Inc., 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: | 23-11325 |
Variety Description
Variety used for comparison: 'NS7627MC'
Summary: The silique of ‘4PWSP65R' has a longer beak than that of ‘NS7627MC'. At maturity, the plants of ‘4PWSP65R' are taller than those of ‘NS7627MC'.
Description:
PLANT: male fertile inbred line, open pollinated spring type, medium height at maturity
COTYLEDON: medium width
LEAF: medium green, few lobes, rounded margin, medium depth of margin indentations, medium length, narrow, short petiole
FLOWER PETAL: yellow, not touching petal spacing
ANTHER: pollen production present
SILIQUE: erect to semi-erect attitude, short, medium to wide, medium length beak, short pedicel
Origin & Breeding History: ‘4PWSP65R' is a restorer inbred line developed by Pioneer Hi-Bred International, Inc. using the double haploid method of plant breeding. The variety originated from a cross between two proprietary inbred lines conducted in 2013 in Carman, Manitoba, Canada. The resulting F1 generation was subject to the double haploidization process with one double haploid line selected and designated as ‘4PWSP65R' in 2017 based on plant vigour, time of flowering and pod development, glucosinolate levels, saturated fats, and oil content. Breeder seed production commenced in 2022.
Tests & Trials: The comparative trials for ‘4PWSP65R' 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 '4PWSP65R' with reference variety 'NS7627MC'
Beak length (mm)
| '4PWSP65R' | 'NS7627MC' | |
|---|---|---|
| mean 2022 (LSD=0.60) | 9.9 | 6.7 |
| std. deviation 2022 | 1.5 | 2.0 |
| mean 2023 (LSD=0.44) | 7.2 | 5.6 |
| std. deviation 2023 | 1.4 | 1.9 |
Plant height (at maturity) (cm)
| '4PWSP65R' | 'NS7627MC' | |
|---|---|---|
| mean 2022 (LSD=5.39) | 105.9 | 91.2 |
| std. deviation 2022 | 10.7 | 10.7 |
| mean 2023 (LSD=4.04) | 100.7 | 91.5 |
| std. deviation 2023 | 7.2 | 8.0 |
Click on image for larger view
Canola: ‘4PWSP65R' (left) with reference variety ‘NS7627MC' (right)
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