|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.
c/o DuPont Pioneer Research
RR # 8 , Site 32, Comp # 14
Lethbridge County, Alberta
Tel: 403-345-3305; X 6609
|Grant of Rights Date:||2015-09-29|
|Date rights surrendered:||2016-09-29|
Varieties used for comparison: 'PS0753R2' and '90M60'
Summary: When 50 percent of the pods are ripe, the plants of '90Y51 are shorter than those of 'PS0753R2. The seed shape of '90Y51 is spherical rounded whereas it is spherical flattened for 'PS0753R2. '90Y51 has a higher seed weight (in grams per 100 mature seed) than 'PS0753R2. '90Y51 matures earlier than 'PS0753R2. '90Y51' is resistant to race 4 of Phytophthora root rot (Phytophthora megasperma f. sp. glycinea) whereas '90M60' is susceptible.
PLANT: oilseed type, indeterminate growth type, semi-erect growth habit, tawny pubescence on middle third of main stem
HYPOCOTYL: strong intensity of anthocyanin colouration
LEAF: medium green colour, pointed ovate lateral leaflet
SEED: spherical rounded shape, dull lustre, yellow ground colour of testa, 19.3 grams per 100 seed at 13 % moisture
HILUM: dark brown, medium to large, normal abscission layer
AGRONOMICS: 2650 heat unit rating
DISEASE REACTIONS: resistant to Phytophthora root rot (Phytophthora megasperma f. sp. glycinea, races 4, 5 and 7)
QUALITY CHARACTERISTICS: 40.9 % protein, 22.3 % oil
Origin & Breeding History: '90Y51 (experimental designations 'XB04Q11', 'PH11004') is the result of a cross made in 2004 between 'YB08N05 and '90M60 in Hawaii, USA. The modified single seed descent method and pedigree method were used to develop the variety. The F1-F2 generations were grown in Puerto Rico while the F3 generation was grown in Chile. The F4 generation onward were grown in Minnesota, USA and advancement was 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 and Phytophthora rot (Phytophthora megasperma f. sp. glycinea).
Tests & Trials: The comparative trial for '90Y51 was conducted in Goderich (Clinton), 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 20 measurements for '90Y51' and 30 measurements for the reference varieties. Differences were significant at the 5% probability level for plant height based on paired Student's t-tests and for seed weight based on LSD values. Results were supported by the official technical examination report 201100210, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.
Comparison tables for '90Y51' with reference varieties 'PS0753R2' and '90M60'
Plant height (cm)
Maturity date (days)
Seed weight (grams per 100 mature seed measured at 13 % moisture)
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