1PDCK43

Corn

Variety Description

Variety used for comparison: 'PH26NC'

Summary: Including the tassel, the plants of ‘1PDCK43' are shorter than those of ‘PH26NC'. The brace roots of ‘1PDCK43' have a very strong intensity of anthocyanin colouration whereas those of ‘PH26NC' have a weak intensity of anthocyanin colouration. The leaf blade of ‘1PDCK43' is narrower than that of ‘PH26NC'. The silks of ‘1PDCK43' have a medium intensity of anthocyanin colouration whereas those of ‘PH26NC' have an absent or very weak intensity of anthocyanin colouration. The ear of ‘1PDCK43' is shorter than that of ‘PH26NC'. Including the kernels, the ear of ‘1PDCK43' has a smaller diameter than that of ‘PH26NC'.

Description:

PLANT: inbred yellow variety, very small ratio of height of insertion of peduncle of upper ear to plant height, anthesis occurs very early in season, silk emergence occurs very early in 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: few primary lateral branches, medium density of spikelets on middle third of main branch, medium length of main axis above lowest lateral branch, medium length of main axis above highest lateral branch
LATERAL BRANCHES: straight, medium angle with main axis, short
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: medium intensity of anthocyanin colouration of silks, conico-cylindrical shape, very many rows of grain, very strong intensity of anthocyanin colouration on glumes of cob
KERNEL: dent-like type, yellow on top, orange on dorsal side

Origin & Breeding History: ‘1PDCK43' originated from a cross conducted by Pioneer Hi-Bred International, Inc. in 2013 between the proprietary inbred lines ‘PH2TTG' and ‘PH26NC' in Puerto Vallarta, Mexico. The F1 plants were self pollinated with resulting ear selections based on genetic analysis predicting disease and insect resistance as well as agronomic performance. Further selfing and ear to row pedigree selections were conducted from the F2 to F9 generation. ‘1PDCK43' was identified at the F10 generation in 2018 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 F10 generation in 2018.

Tests & Trials: The comparative trial for ‘1PDCK43' was conducted in Coteau-du-Lac, Quebec during the 2022 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 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. Results were supported by the official technical examination report number 202200379, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '1PDCK43' with reference variety 'PH26NC'

Plant height (including tassel) (metres)

Leaf blade width (cm)

Ear length (cm)

Ear diameter (including kernels) (cm)

Click on image for larger view

Corn: '1PDCK43' (top) with reference variety 'PH26NC' (bottom)