|Previously Proposed Denomination:||'32-05R'|
|Botanical Name:||Glycine max|
Monsanto Canada Inc.
5192 Jones Baseline
R.R. # 4
Alejandro Hernandez, Monsanto Canada Inc., Guelph, Ontario
Variety used for comparison: '32-52R'
Summary: 'D4201139' is shorter than the reference variety '32-52R'. The pod colour of 'D4201139' is dark brown whereas it is brown for '32-52R'. The seed shape of 'D4201139' is spherical rounded whereas they are spherical flattened in '32-52R'. 'D4201139' has moderate resistance to Soybean cyst nematode whereas '32-52R' is resistant. 'D4201139' has a higher % of protein than the reference variety.
PLANT: indeterminate growth type, grey coloured hairs on middle third of stem, weak anthocyanin colouration of the hypocotyl, heat unit rating 3250
LEAF: lateral leaflet rounded ovate shape
POD: dark brown
SEED: spherical rounded shape, dull seed coat lustre, yellow testa, imperfect black hilum
AGRONOMICS: fair to good resistance to lodging
DISEASE RESISTANCE: resistant to Phytophthora rot (Phytophthora megasperma f. sp. glycinea, races 1-3, 6-11, 13, 15, 17, 21, 23, 24, 26, 28, 29, 30, 32, 34, 36, 38), resistant to moderately resistant to Sclerotinia stem rot (Sclerotinia sclerotiorum), moderately resistant to soybean cyst nematode (Heterodera glycines)
HERBICIDE RESISTANCE: tolerant to glyphosate
Origin & Breeding History: 'D4201139' (previously known as 32-05R) is the result of a cross made in 2001 between A3244 and AG2705 at Isabelle, Puerto Rico. F1 population was grown at Isabella, Puerto Rico and advanced using modified single seed descent. The F2 population was grown at Isabella, Puerto Rico and advanced using pod-pick. The F3 population was grown in bulk at Oxford, Indiana and advanced using single plant selection. The F3 derived F4's were grown in Chile in progeny rows and the variety '32-05R' was selected based on the agronomic characteristics, including, but not limited to, general plant health, lodging, early emergence, and general disease resistance.
Tests & Trials: Tests were conducted during the summers of 2006, 2007 and 2008 in Guelph, Ontario. There were two replicates arranged in a randomized complete block design where first repetition in entry order was used. Each plot consisted of 216 seeds planted in two rows. Rows were spaced 80 cm apart and were 4 meters in length.
Comparison tables for 'D4201139' with reference variety '32-52R'
Days to flowering
Plant height (cm)
Seed weight (grams/100 seed)
Days to maturity
Click on image for larger view
Soybean: 'D4201139' (left) with reference variety '32-52R' (right)
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