PH2FV2

Corn

Variety Description

Variety used for comparison: 'PHEJW'

Summary: The anthocyanin colouration on the anther of 'PH2FV2' is of weak intensity whereas it is of medium to strong intensity on the anther of 'PHEJW'. The intensity of anthocyanin colouration of the silks of 'PH2FV2' is strong whereas it is very weak to medium in 'PHEJW'. 'PH2FV2' has a longer ear than that of 'PHEJW'. When including the kernels, the diameter at the middle of the ear of 'PH2FV2' is smaller than that of 'PHEJW'. The top and dorsal side of the kernel on 'PH2FV2' is yellow whereas it is yellow orange on 'PHEJW'. The kernel type is dent-like for 'PH2FV2' whereas it is flint-like for 'PHEJW'.

Description:

PLANT: inbred yellow corn variety, absent to low frequency of plants with ear wings

TASSEL: anthesis occurs very late in season, medium density of spikelets, very short main axis above lowest lateral branch, short to medium length of main axis above highest lateral branch
LATERAL BRANCHES: absent or very few on main axis of tassel
GLUME: absent or very weak to weak intensity of anthocyanin colouration at base, weak to medium intensity of anthocyanin colouration at tip and on body
ANTHER: weak intensity of anthocyanin colouration

EAR: late silk emergence, strong intensity of anthocyanin colouration of silks, medium length husk (extends one quarter length of ear above tip), conico-cylindrical shape, very short ear wings, weak anthocyanin colouration of cob glumes
KERNEL: dent-like type, yellow on top and dorsal side

Origin & Breeding History: 'PH2FV2' was developed by Pioneer Hi-Bred International, Inc. from the cross between proprietary inbred lines made in 2004 in Algoma, Iowa, USA using a double haploid plant breeding method. The F1 generation underwent a haploidization process in Marian, Iowa, USA in 2005. The haploids were doubled, self-pollinated and ears were harvested near Kekaha, Kauia, Hawaii, USA in 2006. From 2010 to 2011, the subsequent D1 to D3 generations were self-pollinated and harvested in bulk . Selection criteria used in the advancement process included yield per se, yield in hybrid combination, tassel size, pollen production, stalk lodging resistance, late season plant health, grain quality, as well as disease and insect resistance. Yield trials were grown in Janesville, Wisconsin, USA and wide area testing was done in Canada and the USA from 2010 to 2011.

Tests & Trials: The comparative trial for 'PH2FV2', conducted in Woodstock, Ontario during the 2017 growing season, was planted in a complete randomized design and consisted of 3 replicates. Plots consisted of one row 3 metres in length with a row spacing of 76 cm. Each plot had approximately 20 plants per replicate for a total of 50 to 60 plants per variety. Measured characteristics were based on a minimum of 26 measurements. Mean differences were significant at the 5% probability level based on unpaired Student's T-tests. Results were supported by the official technical examination report 201700153, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.

Comparison tables for 'PH2FV2' with reference variety 'PHEJW'

Ear length (cm)

Ear diameter (in middle including kernels) (cm)

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Corn: 'PH2FV2' (top) with reference variety 'PHEJW' (bottom)