PH47R1

Corn

Variety Description

Variety used for comparison: 'PH1V5T'

Summary: The brace roots of 'PH47R1' have a strong intensity of anthocyanin colouration whereas those of 'PH1V5T' have a weak intensity of anthocyanin colouration. The leaf blade just above the upper ear of 'PH47R1' is narrower than that of 'PH1V5T'. The angle between the main axis and the lateral branches on the tassel of 'PH47R1' is a medium size whereas that of 'PH1V5T' is small. The tassels of 'PH47R1' have a medium number of primary lateral branches whereas those of 'PH1V5T' have many primary lateral branches. The tassels of 'PH47R1' have a medium density of spikelets whereas those of 'PH1V5T' are moderately dense with spikelets. The main axis above the lowest lateral branch of the tassel of 'PH47R1' is very short whereas that for 'PH1V5T' is long. The main axis above the highest lateral branch of the tassel of 'PH47R1' is very short whereas that for 'PH1V5T' is a medium length. The lateral branches of the tassel of 'PH47R1' are a medium length whereas those of 'PH1V5T' are long. The ear of 'PH47R1' is shorter than that of 'PH1V5T'.

Description:

PLANT: inbred yellow variety, medium 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, strong intensity of anthocyanin colouration on brace roots

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

TASSEL: medium number of primary lateral branches, medium density of spikelets on middle third of main branch, very short main axes above lowest lateral and highest lateral branches
LATERAL BRANCHES: straight, medium sized angle with main axis, medium length
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, long husk (extends one third length of ear above tip), conico-cylindrical shape, many rows of grain, weak intensity of anthocyanin colouration on glumes of cob
EAR WINGS: absent
KERNEL: dent type, yellow on top, yellow orange on dorsal side

TILLERING: present on a low percentage of plants

Origin & Breeding History: 'PH47R1' was developed by Pioneer Hi-Bred International, Inc. using a double haploid plant breeding method. In 2010, a cross was conducted between proprietary inbred lines in Puerto Vallarta, Mexico. In 2012, the F1 generation underwent a haploidization process with subsequent chromosome doubling and selfing. In 2013, selected D1 lines were self pollinated and harvested in bulk. In 2013 and 2014, the D2 and D3 lines were self pollinated with subsequent ear selections, respectively. 'PH47R1' 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 Princeton, Illinois, USA in 2015.

Tests & Trials: The comparative trial for 'PH47R1' 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 202000330, purchased from the Plant Variety Protection Office in Washington, District of Columbia, USA.

Comparison tables for 'PH47R1' with reference variety 'PH1V5T'

Leaf blade width (cm)

Ear length (cm)

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Corn: 'PH47R1' (left) with reference variety 'PH1V5T' (right)

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Corn: 'PH47R1' (top) with reference variety 'PH1V5T' (bottom)