PH41W6

Corn

Variety Description

Variety used for comparison: 'PH12K5'

Summary: The angle between the main axis and second lateral branch from the bottom of the tassel of 'PH41W6' is of a medium degree while the angle is very small to small for 'PH12K5'. The tassel of 'PH41W6' has few to a medium number of primary lateral branches while that of 'PH12K5' has absent or very few to few primary lateral branches. The second lateral branch from the bottom of the tassel of 'PH41W6' is long and moderately recurved while it is short to medium in length and straight to slightly recurved for 'PH12K5'. From the beginning of anthesis to just before milk development, the brace roots of 'PH41W6' have a very strong intensity of anthocyanin colouration while those of 'PH12K5' have an absent or very weak to weak intensity of anthocyanin colouration. Including the tassel, the plants of 'PH41W6' are shorter than the plants of 'PH12K5'. The leaf blade just above the upper ear of 'PH41W6' is narrower than that of 'PH12K5'. The ear of 'PH41W6' is shorter, and including the kernels, has a smaller diameter than the ear of 'PH12K5'. The primary ear of 'PH41W6' is located lower on the stem than that of 'PH12K5'.

Description:

PLANT: inbred yellow variety, small to medium ratio for height of insertion of peduncle of upper ear to plant height, anthesis occurs late in the season, silk emergence occurs late to very late in the 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): absent or very weak degree of undulation of margin, very small angle with stem, straight

TASSEL: few to a medium number of primary lateral branches, medium density of spikelets on middle third of main branch, main axis above lowest lateral branch very long, main axis above highest lateral branch medium to long
LATERAL BRANCHES (SECOND BRANCH FROM BOTTOM OF TASSEL): moderately recurved, medium angle with main axis, long
GLUME: absent or very weak intensity of anthocyanin colouration at base, weak intensity of anthocyanin colouration at middle and apex
ANTHER (ON MIDDLE THIRD OF MAIN BRANCH): weak to medium intensity of anthocyanin colouration

EAR: absent or very weak intensity of anthocyanin colouration of silks, short husk (level with tip), conico-cylindrical shape, very few to few rows of grain, medium to strong intensity of anthocyanin colouration on glumes of cob
EAR WINGS: absent
KERNEL: dent-like type, yellow on top and dorsal side

TILLERING: absent

Origin & Breeding History: 'PH41W6' was developed by Pioneer Hi-Bred International, Inc. using a double haploid plant breeding method. In 2007, the initial cross was conducted between proprietary inbred lines in Buin, Chile. In 2009, the haploidization process was conducted on the F1 progeny in Oahu, Hawaii, USA. In 2010, the haploids were doubled and self pollinated with subsequent ear selection in Oahu, Hawaii. In 2010, the D1 line was self pollinated and harvested in bulk in Puerto Vallarta, Mexico. In 2013, the D2 and D3 lines were self pollinated with subsequent ear selections in Marion, Iowa, USA and Puerto Vallarta, respectively. In 2014, the D4 line was self pollinated and the D5 seed bulked as breeder seed in Marion, Iowa. 'PH41W6' was selected based on yield in hybrid combination, tassel size, pollen production, germination ability, stalk lodging resistance, late season plant health, grain quality, as well as disease and insect resistance.

Tests & Trials: The comparative trial for 'PH41W6' was conducted in Coteau-du-lac, Quebec during the 2019 growing season. The trial was planted in a RCB Design with 3 replicates. Each replicate consisted of one row of approximately 20 plants, 3 metres in length with 76 cm between the rows. There was a total of 50 to 60 plants per variety. Measured characteristics were based on 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 201900142, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for 'PH41W6' with reference variety 'PH12K5'

Plant height (including tassel) (metres)

Leaf blade width (leaf just above upper ear) (cm)

Ear length (cm)

Ear diameter (in middle including kernels) (cm)

Primary ear, height from ground (metres)

Click on image for larger view

Corn: 'PH41W6' (top) with reference variety 'PH12K5' (bottom)