1PGGG27

Corn

Variety Description

Variety used for comparison: 'PH2G4Y'

Summary: Anthesis for ‘1PGGG27' occurs early in the season whereas that for ‘PH2G4Y' occurs mid-season. The leaf blade of ‘1PGGG27' is narrower than that of ‘PH2G4Y'. Including the kernels, the ear of ‘1PGGG27' has a smaller diameter than that of ‘PH2G4Y'. The glumes of the cob of ‘1PGGG27' have a medium intensity of anthocyanin colouration whereas those of ‘PH2G4Y' have a strong intensity of anthocyanin colouration.

Description:

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

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

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

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

EAR: 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: dent-like type, yellow orange on top, red orange on dorsal side

Origin & Breeding History: ‘1PGGG27' originated from a cross conducted by Pioneer Hi-Bred International, Inc. in 2013 between the proprietary inbred lines ‘PH2G4Y' and ‘PH42SY' in Puerto Vallarta, Mexico. 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 F5 generation. ‘1PGGG27' was identified at the F6 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 F7 generation in 2018.

Tests & Trials: The comparative trial for ‘1PGGG27' 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 202200384, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '1PGGG27' with reference variety 'PH2G4Y'

Leaf blade width (cm)

Ear diameter (including kernels) (cm)

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Corn: '1PGGG27' (top) with reference variety 'PH2G4Y' (bottom)