1PEEA63

Corn

Variety Description

Variety used for comparison: 'PH2SVG'

Summary: Including the tassel, the plants of ‘1PEEA63' are shorter than those of ‘PH2SVG'. The main axis above the lowest lateral branch of the tassel of ‘1PEEA63' is long whereas that of ‘PH2SVG' is a medium length. The main axis above the highest lateral branch of the tassel of ‘1PEEA63' is a medium length whereas that of ‘PH2SVG' is short. The silks of ‘1PEEA63' have a weak intensity of anthocyanin colouration whereas those of ‘PH2SVG' have a medium intensity of anthocyanin colouration. The ear of ‘1PEEA63' is conico-cylindrical in shape whereas that of ‘PH2SVG' is cylindrical in shape.

Description:

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

STEM: absent or very slight degree of zig-zag, weak 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: many primary lateral branches, moderately dense spikelets on middle third of main branch, long main axis above lowest lateral branch, medium length of main axis above highest lateral branch
LATERAL BRANCHES: slightly recurved, 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): absent or very weak intensity of anthocyanin colouration

EAR: weak intensity of anthocyanin colouration of silks, medium length of husk (extends one quarter length of ear above tip), conico-cylindrical shape, very many rows of grain, medium intensity of anthocyanin colouration on glumes of cob
EAR WINGS: present on a low percentage of plants, short
KERNEL: dent-like type, yellow on top, yellow orange on dorsal side

TILLERING: absent

Origin & Breeding History: ‘1PEEA63' was developed by Pioneer Hi-Bred International, Inc. using a double haploid plant breeding method. The variety resulted from a cross between two inbred lines, designated ‘PH1V5T' and ‘PH2SVG', conducted in Marion, Iowa, USA in 2013. The F1 generation underwent haploidization, followed by chromosome doubling and selfing, as part of a field experiment conducted in Oahu, Hawaii, USA, which was planted in June 2014. Resulting DH1 lines were self pollinated and harvested in bulk. ‘1PEEA63' was selected 2019 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 DH2 in 2019.

Tests & Trials: The comparative trial for ‘1PEEA63' was conducted in Coteau-du-Lac, Quebec during the 2023 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 202300208, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison table for '1PEEA63' with reference variety 'PH2SVG'

Plant height (including tassel) (metres)

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Corn: '1PEEA63' (top) with reference variety 'PH2SVG' (bottom)