PH48G8

Corn

Variety Description

Variety used for comparison: 'PH18KW'

Summary: Anthesis for the plants of 'PH48G8' occurs mid season whereas that for 'PH18KW' occurs late in the season. The silks of 'PH48G8' emerge early in the season whereas those for 'PH18KW' emerge mid season. Including the tassel, the plants of 'PH48G8' are shorter than those of 'PH18KW'. The tassels of 'PH48G8' have a medium density of spikelets whereas those of 'PH18KW' have moderately sparse spikelets. The lateral branches of the tassel of 'PH48G8' are straight whereas those of 'PH18KW' are slightly recurved. The primary ear of 'PH48G8' is located lower on the stem than that of 'PH18KW'. The ear of 'PH48G8' is shorter than that of 'PH18KW'. The ear wings for 'PH48G8' are present on a low percentage of plants whereas for 'PH18KW' ear wings are absent. The plants of 'PH48G8' have a low percentage of tillering whereas for 'PH18KW' tillering is absent.

Description:

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

STEM: absent or very slight degree of zig-zag, medium intensity of anthocyanin colouration on brace roots

LEAF BLADE (JUST ABOVE UPPER EAR): medium degree of undulation of margin, very small angle with stem, straight

TASSEL: few primary lateral branches, medium density of spikelets on middle third of main branch, medium length main axis above lowest lateral branch, long main axis above highest lateral branch
LATERAL BRANCHES: straight, small 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): medium 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, absent or very weak intensity of anthocyanin colouration on glumes of cob
EAR WINGS: present on a low percentage of plants, short
KERNEL: intermediate type, yellow on top, yellow orange on dorsal side

TILLERING: present on a low percentage of plants

Origin & Breeding History: 'PH48G8' was developed by Pioneer Hi-Bred International, Inc. using a double haploid plant breeding method. In 2008, a cross was conducted between proprietary inbred lines in Puerto Vallarta, Mexico. In 2009, the F2 generation underwent a haploidization process with subsequent chromosome doubling and selfing. Selected D1 lines were self pollinated and harvested in bulk. From 2014 to 2016, the D2 to D5 lines were self pollinated with subsequent ear selections, respectively. 'PH48G8' 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 DH7 seed was bulked as breeder seed in Olivia, Minnesota, USA in 2018.

Tests & Trials: The comparative trial for 'PH48G8' 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 202000340, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for 'PH48G8' with reference variety 'PH18KW'

Plant height (metres)

Primary ear height (metres)

Ear length (cm)

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Corn: 'PH48G8' (left) with reference variety 'PH18KW' (right)

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Corn: 'PH48G8' (top) with reference variety 'PH18KW' (bottom)