6PRSU04B

Wheat

Variety Description

Variety used for comparison: '25R40'

Summary: At booting, '6PRSU04B' has a high frequency of plants with recurved flag leaves while '25R40' has a low frequency of plants with recurved flag leaves. The flag leaf auricles of '6PRSU04B' have a strong intensity of anthocyanin colouration while those of '25R40' have a medium intensity of anthocyanin colouration. The flag leaf sheath of '6PRSU04B' has a medium degree of glaucosity while that of '25R40' has weak glaucosity. At heading, the spike of '6PRSU04B' has weak glaucosity while that of '25R40' has a medium degree of glaucosity.

Description:

PLANT: common wheat, winter type, semi-erect growth habit at 5 to 9 tiller stage, high frequency of plants with recurved flag leaves, heads emerge mid-season

SEEDLING (4 LEAF STAGE): glabrous sheath and blade of lower leaves

FLAG LEAF: strong intensity of anthocyanin colouration of the auricles, medium degree of 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, medium density, white at maturity, erect attitude
AWNS: shorter than spike length, light brown at maturity

KERNEL: soft red type, amber

Origin & Breeding History: '6PRSU04B' (experimental designation 6035CR28-01) was developed using the pedigree method of plant breeding. The variety resulted from a cross between the varieties ‘XW10Q' and '25R40' conducted at Pioneer Hi-Bred International, Inc. in Windfall, Indiana, USA in 2011. 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 6035CR28-01 in 2017. Breeder seed was established at the F8 generation in 2019.

Tests & Trials: The comparative trial for '6PRSU04B' was conducted at Pioneer Hi-Bred Production Limited in Caledon, Ontario during the 2022 growing season. 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. Measured characteristics were based on 24 measurements per variety. Results were supported by the official technical examination report 202200181, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

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Wheat: ‘6PRSU04B' (left) with reference variety ‘25R40' (right)

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Wheat: ‘6PRSU04B' (left) with reference variety ‘25R40' (right)