1PZWP34

Corn

Variety Description

Variety used for comparison: 'PH2TNV'

Summary: Anthesis for ‘1PZWP34' occurs mid-season whereas that for ‘PH2TNV' occurs early in the season. Including the tassel, the plants of ‘1PZWP34' are taller than those of ‘PH2TNV'. The brace roots of ‘1PZWP34' have a strong intensity of anthocyanin colouration whereas those of ‘PH2TNV' have a weak intensity of anthocyanin colouration. Including the kernels, the ear of ‘1PZWP34' has a larger diameter than that of ‘PH2TNV'. The ear of ‘1PZWP34' has a conico-cylindrical shape whereas that of ‘PH2TNV' has a conical shape.

Description:

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

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

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, long main axis above lowest lateral branch, long main axis above highest lateral branch
LATERAL BRANCHES: straight, small 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): weak intensity of anthocyanin colouration

EAR: weak intensity of anthocyanin colouration of silks, medium length husk (extends one quarter length of ear above tip), conico-cylindrical shape, very many rows of grain, medium intensity of anthocyanin colouration on glumes of cob
EAR WINGS: present on a high percentage of plants, long
KERNEL: intermediate type, yellow on top, yellow orange on dorsal side

TILLERING: absent

Origin & Breeding History: ‘1PZWP34' 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 ‘PH2G25' and ‘PH2TNV', conducted in Woodstock, Ontario in 2013. 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 April 2014. Resulting DH1 lines were self pollinated and harvested in bulk. ‘1PZWP34' was selected 2016 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 2016.

Tests & Trials: The comparative trial for ‘1PZWP34' was conducted in Coteau-du-Lac, Quebec during the 2023 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 202300241, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '1PZWP34' with reference variety 'PH2TNV'

Plant height (including tassel) (metres)

Ear diameter (including kernels) (cm)

Click on image for larger view

Corn: '1PZWP34' (top) with reference variety 'PH2TNV' (bottom)