P18T31R
| Denomination: | 'P18T31R' |
|---|---|
| Botanical Name: | Glycine max |
| Applicant/Holder: |
Pioneer Hi-Bred International, Inc. 7100 NW, 62nd Avenue P.O. Box 1000 Johnston, Iowa 50131-1000 United States of America |
| Breeder: |
Don Kyle, Pioneer Hi-Bred International, Inc., Princeton, United States of America |
| Agent in Canada: |
Pioneer Hi-Bred Production Co. 240, 115 Quarry Park Road SE Calgary, Alberta T2C 5G9 Canada Tel: 403-440-2988 |
| Application Date: | 2015-03-24 |
| Provisional Protection:: | 2015-03-24 |
| Application Number: | 15-8542 |
| Grant of Rights Date: | 2018-03-01 |
| Certificate Number: | 5672 |
| Grant of Rights Termination Date: | 2038-03-01 |
Variety Description
Varieties used for comparison: 'RJS18006' and 'PS1670NR2'
Summary: The plants of 'P18T31R' are shorter than those of both reference varieties. The plants of 'P18T31R' are later maturing than those of 'RJS18006'.
Description:
HYPOCOTYL: medium intensity of anthocyanin colouration
PLANT: indeterminate growth type, erect to semi-erect growth habit, begins flowering and matures mid-season
STEM: light tawny pubescence on middle third
LEAF: medium intensity of green colour
LATERAL LEAFLET: pointed ovate shape, medium size
FLOWER: violet
POD: medium brown
SEED: medium to large size, yellow ground colour of testa
HILUM: black
FUNICLE: same colour as testa
DISEASE REACTIONS: resistant to Phytophthora rot (Phytophthora megasperma f. sp. glycinea) and resistant to Soybean cyst nematode (Heterodera glycines Race 3 and 14)
Origin & Breeding History: 'P18T31R' is the result of the cross between '91Y72' and '92Y30' conducted in 2008 in Viluco, Chile. The modified single seed descent method and pedigree method were used to develop the variety. The F1-F2 generations were grown in Salinas, Puerto Rico. The F3-F5 generations grown in Redwood Falls, Minnesota were advanced based on yield from single plant and progeny rows with single plant purification beginning in 2011. Wide area testing in the USA and Canada continued throughout 2012-2014. Selection criteria included yield, standability, tolerance to glyphosate herbicides and resistance to Phytophthora rot (Phytophthora megasperma f. sp. glycinea).
Tests & Trials: The comparative trial for 'P18T31R' was conducted in Alma, Ontario during the 2015 growing season. It was planted in a RCB design and consisted of 3 replicates for each variety. Plots consisted of 2 rows 4 metres in length and a row spacing of 76 cm. Each plot was sown with approximately 180 to 250 seeds per replication. For each variety, the plant height was based on 30 measurements. Mean differences were significant at the 5% probability level based on a paired Student's t-test. The Canadian trial results were supported by the official technical examination report 201500128, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.
Comparison tables for 'P18T31R' with reference varieties 'RJS18006' and 'PS1670NR2'
Plant height (cm)
| 'P18T31R' | 'RJS18006' | 'PS1670NR2' | |
|---|---|---|---|
| mean | 75.2 | 80.6 | 84.1 |
| std. deviation | 5.51 | 4.92 | 5.00 |
Days to maturity
| 'P18T31R' | 'RJS18006' | 'PS1670NR2' | |
|---|---|---|---|
| mean | 127 | 124 | 126 |
Click on image for larger view
Soybean: 'P18T31R' (centre) with reference varieties 'RJS18006' (left) and 'PS1670NR2' (right)
Click on image for larger view
Soybean: 'P18T31R' (centre) with reference varieties 'RJS18006' (left) and 'PS1670NR2' (right)
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