6PKJH92B

Wheat

Variety Description

Variety used for comparison: '25R40'

Summary: At booting, the flag leaf of '6PKJH92B' is longer and narrower than that of '25R40'. At heading, the culm neck of '6PKJH92B' has a strong degree of glaucosity whereas that of '25R40' has a very strong degree of glaucosity. The spike of '6PKJH92B' is of a medium density while that of '25R40' is dense. At maturity, the awns of '6PKJH92B' are brown while those of '25R40' are light brown. The spike of '6PKJH92B' has an inclined attitude while that of '25R40' has a nodding attitude. The kernel of '6PKJH92B' is medium red in colour while that of '25R40' is white.

Description:

PLANT: common wheat, winter type, intermediate growth habit at 5 to 9 tiller stage, heads emerge mid-season

FLAG LEAF: weak glaucosity of sheath

CULM: strong glaucosity at heading, curved neck
STRAW (AT MATURITY): thin pith in cross-section

SPIKE: medium degree of glaucosity at heading, semi-clavate in profile, medium density, coloured at maturity, inclined attitude
AWNS: longer than spike length, brown at maturity

KERNEL: soft red type, medium red

Origin & Breeding History: '6PKJH92B' (experimental designation 6035BR06-01) was developed using the pedigree method of plant breeding. The variety resulted from a three-way cross between two proprietary lines and the variety '25R40' conducted at Pioneer Hi-Bred International, Inc. in Windfall, Indiana, USA in 2009. 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 6035BR06-01 in 2015. Breeder seed was established at the F8 generation in 2017.

Tests & Trials: The comparative trials for '6PKJH92B' 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. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison tables for '6PKJH92B' with reference variety '25R40'

Flag leaf length (cm)

Flag leaf width (cm)

Plant height at maturity (stem plus spike including awns) (cm)

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Wheat: ‘6PKJH92B' (right) with reference variety ‘25R40' (left)