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Denomination: '91Y61'
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: Martin Fabrizius, Pioneer Hi-Bred International, Inc., Redwood Falls, United States of America
Agent in Canada: Pioneer Hi-Bred Production Co.
24th Floor, 215 2nd Street SW
Calgary, Alberta
T2P 1M4
Tel: 403-440-2988
Application Date: 2011-02-24
Application Number: 11-7195
Grant of Rights Date: 2014-02-10
Certificate Number: 4710
Date rights surrendered: 2018-02-10

Variety Description

Varieties used for comparison: '91M01' and 91Y71'

Summary: '91Y61' flowers earlier than '91Y71' but later than '91M01'. The pubescence of '91Y61' is tawny while it is light tawny for '91Y71'. '91Y61' has elongate seed while they are spherical flattened for the reference varieties. '91Y61' matures later than '91M01'.


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, 17.1 grams per 100 seed at 13-15 % moisture
HILUM: dark brown, normal abscission layer

AGRONOMICS: 2925 heat unit rating

QUALITY CHARACTERISTICS: 43.1 % protein, 20.6 % oil

Origin & Breeding History: '91Y61' (experimental designations XB16P10, PH10106) is the result of a cross made in 2002/2003 between '92M22' and '91M11' in Puerto Rico. The modified single seed descent method and pedigree method were used to develop the variety. The F2-F4 generations were grown in Puerto Rico. The F5 generation onward were grown in Minnesota and Canada and advanced based on yield for single plants and progeny rows. Single plant purification occurred in 2007 in Minnesota. Wide area testing continued from 2009-2010 in the USA and Canada. Selection criteria included yield, maturity and resistance to Roundup branded herbicides.

Tests & Trials: Test and trials were conducted in Goderich (Clinton), 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 201000558, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.

Comparison tables for '91Y61' with reference varieties '91M01' and 91Y71'

Days to flowering

  '91Y61' '91M01' 91Y71'
mean 56 52 58

Days to maturity

  '91Y61' '91M01' 91Y71'
mean 114.3 109.0 115.7

Click on image for larger view
Soybean: '91Y61' (centre) with reference varieties '91M01' (left) and '91Y71' (right)

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