PH48YG

Corn

Variety Description

Variety used for comparison: 'PH1DGV'

Summary: Anthesis for the plants of 'PH48YG' occurs early in the season whereas that for 'PH1DGV' occurs mid season. Including the tassel, the plants of 'PH48YG' are shorter than those of 'PH1DGV'. The leaf blade just above the upper ear of 'PH48YG' is narrower than that of 'PH1DGV'. The main axis above the highest lateral branch of the tassel of 'PH48YG' is short whereas that of 'PH1DGV' is a medium length. The tassels of 'PH48YG' have many primary lateral branches whereas those for 'PH1DGV' have a medium number of primary lateral branches. The lateral branches of the tassels of 'PH48YG' are slightly recurved whereas those for 'PH1DGV' are moderately recurved. The primary ear of 'PH48YG' is located lower on the stem than it is for 'PH1DGV'. Including the kernels, the ear of 'PH48YG' has a larger diameter than that of 'PH1DGV'. The glumes of the cob of 'PH48YG' have a strong intensity of anthocyanin colouration whereas those of 'PH1DGV' have a medium intensity of anthocyanin colouration. Ear wings are present on a high percentage of plants for 'PH48YG' whereas they are present on a low percentage of plants for 'PH1DGV'. The silks of 'PH48YG' have an absent or very weak intensity of anthocyanin colouration whereas those of 'PH1DGV' have a weak intensity of anthocyanin colouration.

Description:

PLANT: inbred yellow variety, small ratio of height of insertion of peduncle of upper ear to plant height, anthesis and silk emergence occur 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): strong undulation of margin, very small angle with stem, slightly recurved

TASSEL: many primary lateral branches, moderately sparse spikelets on middle third of main branch, long main axis above lowest lateral branch, short main axis above highest lateral branch
LATERAL BRANCHES: slightly recurved, medium sized angle with main axis, medium length
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, short husk (level with tip), conico-cylindrical shape, medium number of rows of grain, strong intensity of anthocyanin colouration on glumes of cob
EAR WINGS: present on a high percentage of plants, medium length
KERNEL: dent type, yellow on top, yellow orange on dorsal side

TILLERING: present on a low percentage of plants

Origin & Breeding History: 'PH48YG' was developed by Pioneer Hi-Bred International, Inc. using a double haploid plant breeding method. In 2009, a cross was conducted between proprietary inbred lines in Buin, Chile. In 2011, the F1 generation underwent a haploidization process with subsequent chromosome doubling and selfing. Selected D1 lines were self pollinated and harvested in bulk. In 2014, the D2 and D3 lines were self pollinated with subsequent ear selections, respectively. 'PH48YG' was selected 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. The D5 seed was bulked as breeder seed in Puerto Vallarta, Mexico in 2015.

Tests & Trials: The comparative trial for 'PH48YG' was conducted in Coteau-du-Lac, Quebec during the 2021 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 50 to 60 plants per variety. Measured characteristics were based on a minimum of 30 measurements per variety. Mean differences were significant at the 5% probability level based on paired Student's T-tests. Results were supported by the official technical examination report 202000348, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for 'PH48YG' with reference variety 'PH1DGV'

Plant height (metres)

Leaf blade width (cm)

Primary ear height (metres)

Ear diameter (including kernels) (cm)

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Corn: 'PH48YG' (left) with reference variety 'PH1DGV' (right)

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Corn: 'PH48YG' (top) with reference variety 'PH1DGV' (bottom)