|Botanical Name:||Glycine max|
Pioneer Hi-Bred International, Inc.
8305 NW 62nd Avenue
P.O. Box 7060
United States of America
Nadia Krasheninnik, Pioneer Hi-Bred International, Inc., Moorhead, United States of America
|Agent in Canada:||
Pioneer Hi-Bred Production Co.
24th Floor, 215 2nd Street SW
|Grant of Rights Date:||2015-06-26|
|Date rights revoked:||2016-06-26|
Varieties used for comparison: 'AbsoluteRR' and '90Y90'
Summary: '90Y81 flowers earlier than 'AbsoluteRR. The plants of '90Y81 have a light tawny pubescence whereas those of 'AbsoluteRR have a brown (tawny) pubescence. When 50 % of the pods are ripe, the plants of '90Y81 are shorter than those of 'AbsoluteRR. The seed shape of '90Y81 is spherical flattened whereas it is spherical rounded for '90Y90. The hilum of '90Y81 is black whereas it is dark brown for '90Y90. '90Y81 matures earlier than 'AbsoluteRR.
PLANT: oilseed type, indeterminate growth type, semi-erect growth habit, light tawny pubescence on middle third of main stem
HYPOCOTYL: strong intensity of anthocyanin colouration
LEAF: medium green colour, pointed ovate lateral leaflet
SEED: spherical flattened, dull lustre, yellow ground colour of testa, 20.0 grams per 100 seed at 13 % moisture
HILUM: black, medium sized, normal abscission layer
AGRONOMICS: 2725 heat unit rating
QUALITY CHARACTERISTICS: 38.7 % protein, 23.2 % oil
Origin & Breeding History: '90Y81 (experimental designations XB07Y11, PH11007) is the result of a cross made in 2004 between '92M75 and '90M60 in Puerto Rico. The modified single seed descent method and pedigree method were used to develop the variety. The F1-F2 generations were grown in Hawaii, USA. The F3 was grown in Chili. The F4 generation onward were grown in Minnesota, USA and advanced based on yield for single plants and progeny rows. Single plant purification occurred in 2008 in Chile. Wide area testing continued from 2009-2011 in the USA and Canada. Selection criteria included yield, maturity and resistance to Roundup branded herbicides, Phytophthora rot (Phytophthora megasperma f. sp. glycinea) and soybean cyst nematode (Heterodera glycines).
Tests & Trials: Test and trials for '90Y81 were conducted in Thamesford, Ontario during the 2012 growing season. Plots consisted of 2 rows with a row length of 4 metres and a row spacing of 76 cm. Each plot was sown with approximately 225 seeds. There were 3 replications per variety arranged in a RCB design. The measured characteristics were based on 30 measurements per variety. Mean differences were significant at the 5% probability level based on LSD values. Results were supported by the official technical examination report 201100207, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.
Comparison tables for '90Y81' with reference varieties 'AbsoluteRR' and '90Y90'
Flowering Date (days)
Plant height (cm)
Maturity Date (days)
Click on image for larger view
Soybean: '90Y81' (center) with reference varieties '90Y90' (left) and 'Absolute RR' (right)
Click on image for larger view
Soybean: '90Y81' (bottom) with reference varieties '90Y90' (top left) and 'Absolute RR' (top right)
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