PH48YD

Corn

Variety Description

Variety used for comparison: 'PH1DF8'

Summary: The leaf blade of ‘PH48YD' is wider than that of ‘PH1DF8'. The angle between the main axis and the lateral branches on the tassel of ‘PH48YD' is very small whereas that for ‘PH1DF8' is small. The main axis above the highest lateral branch on the tassel of ‘PH48YD' is long whereas that of ‘PH1DF8' ranges from short to medium length. The ear of ‘PH48YD' is longer than that of ‘PH1DF8'.

Description:

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

STEM: absent or very slight degree of zig-zag

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, medium density of spikelets on middle third of main branch, very long main axis above lowest lateral branch, long main axis above highest lateral branch
LATERAL BRANCHES: ranges from slightly to moderately recurved, very small angle with main axis, long
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): medium intensity of anthocyanin colouration

EAR: weak intensity of anthocyanin colouration of silks, conico-cylindrical shape, very many 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-like type, yellow on top, red orange on dorsal side

TILLERING: absent

Origin & Breeding History: ‘PH48YD' 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 ‘PH1DF8' and ‘PH1M77', conducted in Willmar, Minnesota, USA in 2010. 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 March 2011. Resulting DH1 lines were self pollinated and harvested in bulk. ‘PH48YD' was selected in 2014 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 2011.

Tests & Trials: The comparative trials for ‘PH48YD' were conducted in Coteau-du-Lac, Quebec during the 2021 and 2022 growing seasons. The trials were 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.

Comparison tables for 'PH48YD' with reference variety 'PH1DF8'

Leaf width (cm)

Ear length (cm)

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Corn: 'PH48YD' (top) with reference variety 'PH1DF8' (bottom)