1PEVY61

Corn

Variety Description

Variety used for comparison: 'PH18GY'

Summary: Including the tassel, the plants of ‘1PEVY61' are shorter than those of ‘PH18GY'. The brace roots of ‘1PEVY61' have an absent or very weak intensity of anthocyanin colouration whereas those of ‘PH18GY' have a medium intensity of anthocyanin colouration. The leaf blade of ‘1PEVY61' is narrower than that of ‘PH18GY'. The angle between the main axis and the lateral branches of the tassel of ‘1PEVY61' is very small whereas that of ‘PH18GY' is medium sized. The base of the glume on the tassel of ‘1PEVY61' has an absent or very weak intensity of anthocyanin colouration whereas that of ‘PH18GY' has a medium intensity of anthocyanin colouration. The anthers of ‘1PEVY61' have an absent or very weak intensity of anthocyanin colouration whereas those of ‘PH18GY' have a medium intensity of anthocyanin colouration.

Description:

PLANT: inbred yellow variety, medium ratio of height of insertion of peduncle of upper ear to plant height, anthesis occurs very early in season, silk emergence occurs early in season

STEM: absent or very slight degree of zig-zag, absent or very weak intensity of anthocyanin colouration on brace roots

LEAF BLADE (JUST ABOVE UPPER EAR): intermediate degree of undulation of margin, very small angle with stem, slightly recurved

TASSEL: medium number of primary lateral branches, medium density of spikelets on middle third of main branch, short main axis above lowest lateral branch, short main axis above highest lateral branch
LATERAL BRANCHES: straight, very small angle with main axis, short
GLUME: absent or very weak intensity of anthocyanin colouration at base, weak intensity of anthocyanin colouration at apex and middle
ANTHER (ON MIDDLE THIRD OF MAIN BRANCH OF TASSEL): absent or very weak intensity of anthocyanin colouration

EAR: absent or very weak intensity of anthocyanin colouration of silks, conico-cylindrical shape, very many rows of grain, medium intensity of anthocyanin colouration on glumes of cob
KERNEL: intermediate type, yellow on top, yellow on dorsal side

Origin & Breeding History: ‘1PEVY61' originated from a cross conducted by Pioneer Hi-Bred International, Inc. in 2012 between the proprietary inbred lines ‘PH2G46' and ‘PH18GY' in St. Polycarpe, Quebec. The F1 plants were self pollinated with resulting ear selections based on genetic analysis predicting disease and insect resistance as well as agronomic performance. Further selfing and ear to row pedigree selections were conducted from the F2 to F7 generation. ‘1PEVY61' was identified at the F8 generation in 2017 based on tassel size, pollen production, germination ability, stalk lodging resistance, late season plant health, yield in hybrid combination, grain quality, as well as disease and insect resistance. Breeder seed was established at the F9 generation in 2018.

Tests & Trials: The comparative trial for ‘1PEVY61' was conducted in Coteau-du-Lac, Quebec during the 2022 growing season. The trial was planted in a RCB design with 3 replicates. Each replicate consisted of one 3 metre long row with 76 cm between the rows. With approximately 20 plants per row, there was a total of 60 plants per variety. Measured characteristics were based on a minimum of 30 measurements per variety. Mean differences were significant at the 5% confidence probability level based on a paired Student's T-tests. Results were supported by the official technical examination report number 202200381, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '1PEVY61' with reference variety 'PH18GY'

Plant height (including tassel) (metres)

Leaf blade width (cm)

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Corn: '1PEVY61'

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Corn: Reference variety 'PH18GY'

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Corn: '1PEVY61' (top) with reference variety 'PH18GY' (bottom)