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Denomination: '91Y01'
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 Co.
24th Floor, 215 2nd Street SW
Calgary, Alberta
T2P 1M4
Tel: 403-440-2988
Application Date: 2012-01-26
Application Number: 12-7484
Grant of Rights Date: 2015-06-26
Certificate Number: 5049
Grant of Rights Termination Date: 2035-06-26

Variety Description

Varieties used for comparison: 'S10-G7' and '90Y90'

Summary: '91Y01’ flowers later than '90Y90’. The plants of '91Y01’ have a grey pubescence whereas those of the reference varieties have a light tawny pubescence. When 50 % of the pods are ripe, the plants of '91Y01’ are shorter than those of '90Y90’. '91Y01’ has a brown pod colour whereas it is tan for 'S10-G7’. The seed shape of '91Y01’ is elongate whereas it is spherical flattened for 'S10-G7’ and spherical rounded for '90Y90’. The hilum of '91Y01’ is light brown (buff) whereas it is dark brown for the reference varieties.


PLANT: oilseed type, indeterminate growth type, semi-erect growth habit, grey pubescence on middle third of main stem

HYPOCOTYL: strong intensity of anthocyanin colouration

LEAF: medium green colour, pointed ovate lateral leaflet

FLOWER: violet

POD: brown
SEED: elongate, dull lustre, yellow ground colour of testa, 20.8 grams per 100 seed at 13 % moisture
HILUM: light brown, medium sized, normal abscission layer

AGRONOMICS: 2775 heat unit rating

QUALITY CHARACTERISTICS: 37.8 % protein, 22.8 % oil

Origin & Breeding History: '91Y01’ (experimental designations XB10D11, PH11101) is the result of a cross made in 2004 between 'YB08K04’ and '90M60’ in Minnesota, 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. The F3 was grown in Minnesota and the F4 in Chili. The F5 generation onward were grown in Minnesota 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 and Phytophthora rot (Phytophthora megasperma f. sp. glycinea).

Tests & Trials: Test and trials for '91Y01’ 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 201100203, purchased from the Plant Variety Protection Office, Beltsville, Maryland, USA.

Comparison tables for '91Y01' with reference varieties 'S10-G7' and '90Y90'

Flowering Date (days)

  '91Y01' 'S10-G7' '90Y90'
mean 55 55 53

Plant height (cm)

  '91Y01' 'S10-G7' '90Y90'
mean (LSD=2.27) 60.2 62.3 64.8
std. deviation 5.6 3.5 4.0

Click on image for larger view
Soybean: '91Y01' (center) with reference varieties '90Y90' (left) and 'S10-G7' (right)

Click on image for larger view
Soybean: '91Y01' (bottom) with reference varieties '90Y90' (top left) and 'S10-G7' (top right)

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