1PMTR32

Corn

Variety Description

Variety used for comparison: 'PH1V5T'

Summary: Anthesis for ‘1PMTR32' occurs late in the season whereas that for ‘PH1V5T' occurs very late in the season. The ear of ‘1PMTR32' is shorter than that of ‘PH1V5T'. Including the kernels, the ear of ‘1PMTR32' has a smaller diameter than that of ‘PH1V5T'.

Description:

PLANT: inbred yellow variety, very small ratio of height of insertion of peduncle of upper ear to plant height, anthesis occurs late in season, silk emergence occurs late in season

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

LEAF BLADE (JUST ABOVE UPPER EAR): intermediate degree of undulation of margin, medium angle with stem, slightly recurved

TASSEL: medium number of primary lateral branches, moderately dense 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: slightly recurved, medium angle with main axis, short
GLUME: absent or very weak intensity of anthocyanin colouration at base, absent or very 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: 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, absent or very weak intensity of anthocyanin colouration on glumes of cob
EAR WINGS: present on a medium percentage of plants, short
KERNEL: dent type, yellow on top, yellow orange on dorsal side

TILLERING: absent

Origin & Breeding History: ‘1PMTR32' originated from a cross conducted by Pioneer Hi-Bred International, Inc. in 2011 between the proprietary inbred lines ‘PH1V5T' and ‘PH1W4R' in Marion, Iowa, USA. 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 F7 generation. ‘1PMTR32' was identified at the F8 generation in 2017 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 F9 generation in 2018.

Tests & Trials: The comparative trial for ‘1PMTR32' 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 202300220, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for '1PMTR32' with reference variety 'PH1V5T'

Ear length (cm)

Ear diameter (including kernels) (cm)

Click on image for larger view

Corn: '1PMTR32' (top) with reference variety 'PH1V5T' (bottom)