6PLSK70B
| Denomination: | '6PLSK70B' |
|---|---|
| Botanical Name: | Triticum aestivum |
| Applicant/Holder: |
Pioneer Hi-Bred International, Inc. 8305 NW, 62nd Avenue P.O. Box 7060 Johnston, Iowa 50131 United States of America |
| Breeder: |
Cristiano Lemes Da Silva, Pioneer Hi-Bred International, Inc., Windfall, United States of America Kyle Lively, Pioneer Hi-Bred International, Inc., Windfall, United States of America William J. Laskar, Pioneer Hi-Bred International, Inc., Windfall, United States of America |
| 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: | 2021-05-03 |
| Provisional Protection: | 2021-05-03 |
| Application Number: | 21-10526 |
| Date Withdrawn: | 2025-12-17 |
Variety Description
Variety used for comparison: '25R46'
Summary: At booting, the flag leaf sheath of ‘6PLSK70B' has absent or very weak glaucosity while that of ‘25R46' has weak glaucosity. At heading, the spike of ‘6PLSK70B' has weak glaucosity while that of ‘25R46' has a medium degree of glaucosity. The culm neck of ‘6PLSK70B' has strong glaucosity while that of ‘25R46' has very strong glaucosity. The spike of ‘6PLSK70B' is semi-clavate in profile and lax while the spike of ‘25R46' is fusiform in profile and of a medium density. At maturity, the awns of ‘6PLSK70B' are brown while those of ‘25R46' are light brown.
Description:
PLANT: common wheat, winter type, erect to semi-erect growth habit at 5 to 9 tiller stage, heads emerge mid-season.
SEEDLING (4 LEAF STAGE): glabrous sheath and blade of lower leaves
FLAG LEAF: absent or very weak glaucosity of sheath
CULM: strong glaucosity at heading
STRAW (AT MATURITY): thin pith in cross-section
SPIKE: weak glaucosity at heading, semi-clavate in profile, lax, coloured at maturity, nodding attitude
AWNS: longer than spike length, brown at maturity
KERNEL: soft red type, medium red
Origin & Breeding History: '6PLSK70B' (experimental designation 6035BR08-01) was developed using the pedigree method of plant breeding. The variety resulted from a three-way cross between a proprietary line and the varieties '26R20' and ‘W000850B1' conducted at Pioneer Hi-Bred International, Inc. in Windfall, Indiana, USA in 2008. The variety was advanced in Windfall, Indiana based on grain yield, test weight, maturity, disease resistance, plant type, plant height, head type, straw strength as well as milling and baking characteristics with one F6 line designated as 6035BR08-01 in 2014. Breeder seed was established at the F8 generation in 2017.
Tests & Trials: The comparative trials for '6PLSK70B' were conducted at Pioneer Hi-Bred Production Limited in Caledon, Ontario during the 2021 and 2022 growing seasons. There were 3 replicates arranged in an RCB design. Each plot consisted of 6 rows, each row measuring 3.2 metres long, with an inter-row spacing of 30 cm. The planting density resulted in 7800 plants per variety per year. Measured characteristics were based on 24 measurements per variety per year.
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Wheat: ‘6PLSK70B'
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Wheat: ‘6PLSK70B'
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Wheat: ‘6PLSK70B' (left) with reference variety ‘25R46' (right)
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