PH41M2

Corn

Variety Description

Variety used for comparison: 'PH17R8'

Summary: Including the tassel, the plants of 'PH41M2' are shorter than those of 'PH17R8'. The tassels of 'PH41M2' have many primary lateral branches whereas those of 'PH17R8' have few primary lateral branches. The main axis above the highest lateral branch of 'PH41M2' is short whereas that of 'PH17R8' is a medium length. The ear of 'PH41M2' is shorter than that of 'PH17R8'. The glumes on the cobs of 'PH41M2' have a weak intensity of anthocyanin colouration whereas those of 'PH17R8' have a medium intensity of anthocyanin colouration.

Description:

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

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

LEAF BLADE (JUST ABOVE UPPER EAR): strong undulation of margin, very small angle with stem, straight
TASSEL: many primary lateral branches, medium density of spikelets on middle third of main branch, medium length main axis above lowest lateral branch, short main axis above highest lateral branch
LATERAL BRANCHES: straight, very small angle with main axis, long
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, few rows of grain, weak intensity of anthocyanin colouration on glumes of cob
EAR WINGS: present on a low percentage of plants, medium length
KERNEL: intermediate type, yellow on top, yellow orange on dorsal side

TILLERING: none

Origin & Breeding History: 'PH41M2' was developed by Pioneer Hi-Bred International, Inc. using a double haploid plant breeding method. In 2009, a cross was conducted between proprietary inbred lines in Miami, Missouri, USA. In 2010, the F1 generation underwent a haploidization process with subsequent chromosome doubling and selfing. In 2011, selected D1 lines were self pollinated and harvested in bulk. In 2013, the D2 and D3 lines were self pollinated with subsequent ear selections, respectively. 'PH41M2' 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 D5 seed was bulked as breeder seed in Puerto Vallarta, Mexico in 2014.

Tests & Trials: The comparative trial for 'PH41M2' 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 29 measurements per variety. Mean differences were significant at the 5% probability level based on Student's T-tests. Results were supported by the official technical examination report 201900147, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for 'PH41M2' with reference variety 'PH17R8'

Plant height (metres)

Ear length (cm)

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Corn: 'PH41M2' (top) with reference variety 'PH17R8' (bottom)