PH47B1

Corn

Variety Description

Variety used for comparison: 'PH1TRA'

Summary: The plants of ‘PH47B1' are shorter than those of ‘PH1TRA'. The leaf blade of ‘PH47B1' is wider than that of ‘PH1TRA'. The glumes on the tassel of ‘PH47B1' have absent or very weak intensity of anthocyanin colouration whereas those of ‘PH1TRA' have a medium intensity of anthocyanin colouration. The silks of ‘PH47B1' have weak intensity of anthocyanin colouration whereas those of ‘PH1TRA' have a medium intensity of anthocyanin colouration. The ear of ‘PH47B1' is shorter and has a larger diameter than that of ‘PH1TRA'.

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 mid-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, small angle with stem, slightly recurved

TASSEL: many primary lateral branches, medium density of spikelets on middle third of main branch, medium length of main axis above lowest lateral branch, short main axis above highest lateral branch
LATERAL BRANCHES: straight, very small 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, conico-cylindrical shape, many rows of grain, medium intensity of anthocyanin colouration on glumes of cob
EAR WINGS: medium length
KERNEL: dent-like type, yellow on top, yellow orange on dorsal side

TILLERING: absent

Origin & Breeding History: ‘PH47B1' 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 ‘PH1K8P' and ‘PH1TRA', conducted in Puerto Vallarta, Mexico in 2010. The F1 generation underwent a haploidization process with subsequent chromosome doubling and selfing. Resulting DH1 lines were self pollinated and harvested in bulk. From 2010 to 2013, the DH2 to DH4 lines were self pollinated with subsequent ear selections, respectively. ‘PH47B1' was selected in 2014 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 DH5 in 2014.

Tests & Trials: The comparative trials for 'PH47B1' were conducted in Coteau-du-Lac, Quebec during the 2021 and 2022 growing seasons. The trials were 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 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.

Comparison tables for 'PH47B1' with reference variety 'PH1TRA'

Plant height (including tassel) (metres)

Leaf blade width (cm)

Ear length (cm)

Ear diameter (including kernels) (cm)

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Corn: 'PH47B1' (top) with reference variety 'PH1TRA' (bottom)