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Denomination: '900Y81'
Botanical Name: Glycine max
Applicant/Holder: Pioneer Hi-Bred International, Inc.
8305 NW 62nd Avenue
P.O. Box 7060
Johnston, Iowa
United States of America
Breeder: Nadia Krasheninnik, Pioneer Hi-Bred International, Inc., Moorhead, United States of America
Agent in Canada: Pioneer Hi-Bred Production LP
379 Springbank Ave.
P.O. Box 23040
Woodstock, Ontario
N4T 1R9
Tel: 519-533-5151
Application Date: 2011-02-24
Application Number: 11-7199
Grant of Rights Date: 2013-12-23
Certificate Number: 4686
Date rights surrendered: 2015-12-23

Variety Description

Varieties used for comparison: '900Y61', '900Y71' and 'Prius RR'

Summary: '900Y81' flowers later than the reference varieties. When 50% of the pods are ripe, '900Y81' is taller in plant height than '900Y61' and '900Y71'. '900Y81' has a brown pod colour while it is tan for 'Prius RR'. The seed shape of '900Y81' is elongate while it is spherical rounded for '900Y61' and spherical flattened for 'Prius RR'. '900Y81' has a dark brown hilum while it is imperfect yellow for '900Y71'. '900Y81' matures later than the reference varieties. The protein content of the seed of '900Y81' is less than in 'Prius RR'.


HYPOCOTYL: strong intensity of anthocyanin colouration

PLANT: oilseed type, indeterminate growth type, erect to semi-erect growth habit, tawny pubescence

LEAF: medium green colour, pointed ovate lateral leaflet

FLOWER: violet

POD: brown
SEED: elongate shape, dull lustre, yellow ground colour of testa, 19.5 grams per 100 seed at 13-15 % moisture
HILUM: dark brown, normal abscission layer

AGRONOMICS: 2475 heat unit rating

QUALITY CHARACTERISTICS: 39.4 % protein, 20.9 % oil

Origin & Breeding History: '900Y81' (experimental designations XB007F10, PH10002) is the result of a cross made in 2003 between 'XB01C03' and '90M60' in Minnesota. The modified single seed descent method and pedigree method were used to develop the variety. The F2 generation was grown in Puerto Rico and the F3 in Canada. The F4 was grown in Chile. The F5 generation onward was grown in Minnesota and advanced based on yield for single plants and progeny rows. Single plant purification occurred in 2007/2008 in Chile. Wide area testing continued from 2008-2010 in the USA and Canada. Selection criteria included yield, maturity, resistance to Roundup branded herbicides and to Phytophthora megasperma and Iron Chlorosis on calcareous soils.

Tests & Trials: Test and trials were conducted in Monkton, Ontario during the 2011 growing season. Plots consisted of 2 rows with a row length of 4 meters and a row spacing of 76 cm. There were 3 replicates. Results were supported by the official technical examination report 201000570, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.

Comparison tables for '900Y81' with reference varieties '900Y61', '900Y71' and 'Prius RR'

Days to flowering

  '900Y81' '900Y61' '900Y71' 'Prius RR'
mean 58 55 56 56

Plant height (when 50% of pods are ripe) (cm)

  '900Y81' '900Y61' '900Y71' 'Prius RR'
mean 60.5 53.3 52.1 59.2
std. deviation 4.80 3.92 3.04 3.94

Days to maturity

  '900Y81' '900Y61' '900Y71' 'Prius RR'
mean 112 107 107 107

Protein content (%)

  '900Y81' '900Y61' '900Y71' 'Prius RR'
mean 39.4 40.3 39.7 45.0

Click on image for larger view
Soybean: '900Y81' (centre right) with reference varieties '900Y71' (far left), '900Y61' (centre left) and 'Prius RR' (far right)

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