PH2G60

Corn

Variety Description

Varieties used for comparison: 'PHWNS' and 'PH2TCG'

Summary: During anthesis, the intensity of anthocyanin colouration at the base of the glume of 'PH2G60' is absent or very weak whereas it is weak at the base of the glume of 'PH2TCG'. The intensity of anthocyanin colouration of the anther of 'PH2G60' is strong whereas it is very strong on the reference varieties. The tassel of 'PH2G60' has a very small to medium sized angle between the main axis and lateral branches whereas that of 'PH2TCG' has a large angle between the main axis and lateral branches. The tassel of 'PH2G60' has none or very few lateral branches whereas the tassel of both reference varieties have a few to a medium number of lateral branches. The silks emerge early for 'PH2G60' while the silks emerge mid to late season for 'PH2TCG'. The intensity of anthocyanin colouration of the silks of 'PH2G60' is strong whereas it is weak in 'PHWNS' and absent to very weak in 'PH2TCG'. At the end of anthesis, the main axis above the lowest lateral branch is short on the tassel of 'PH2G60' whereas it is medium to long on the tassel of 'PHWNS' and very long on the tassel of 'PH2TCG'. When including the kernels, the diameter at the middle of the ear of 'PH2G60' is smaller than that of the reference varieties.

Description:

PLANT: inbred yellow corn variety, no plants with ear wings

TASSEL: anthesis occurs early to mid-season, small to medium sized angle between main axis and lateral branches during anthesis, moderately dense to very dense spikelets, short main axis above lowest lateral branch, medium to long main axis above highest lateral branch
LATERAL BRANCHES: absent or very few on main axis of tassel, straight
GLUME: absent or very weak intensity of anthocyanin colouration at base, weak to medium intensity of anthocyanin colouration at tip and on body
ANTHER: strong intensity of anthocyanin colouration

EAR: early silk emergence, strong intensity of anthocyanin colouration of silks, conico-cylindrical shape, weak to medium intensity of anthocyanin colouration of cob glumes
KERNEL: dent-like type, yellow on top and dorsal side

Origin & Breeding History: 'PH2G60' was developed by Pioneer Hi-Bred International, Inc. from the cross between proprietary inbred lines made in 2008 in Moorhead, Minnesota, USA using a double haploid plant breeding method. The F1generation underwent a haploidization process in Oahu, Hawaii, USA in 2009. The haploids were doubled, self-pollinated and ears were harvested in 2009. From 2010 to 2012, the subsequent D1 to D3 generations were self-pollinated and harvested in bulk near Buin, Chile and Woodstock, Ontario, Canada. 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 Woodstock, Ontario and wide area testing was done in Canada and the USA from 2011 to 2012.

Tests & Trials: The comparative trial for 'PH2G60', 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 29 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 201700161, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.

Comparison table for 'PH2G60' with reference varieties 'PHWNS' and 'PH2TCG'

Ear diameter (in middle including kernels) (cm)

Click on image for larger view

Corn: 'PH2G60' (top) with reference varieties 'PHWNS' (centre) and 'PH2TCG' (bottom)