Nocoma R2

Soybean

Variety Description

Varieties used for comparison: 'Akras R2', 'Lono R2' and 'Sampsa R2'

Summary: The hypocotyl of 'Nocoma R2' has a medium to strong intensity of anthocyanin colouration whereas that of 'Sampsa R2' has no anthocyanin colouration. The pubescence on the middle third of the stem of 'Nocoma R2' is light tawny whereas it is tawny on 'Lono R2' and grey on 'Sampsa R2'. When 50 % of the pods are ripe, the plants of 'Nocoma R2' are shorter than the plants of 'Lono R2' and taller than the plants of 'Sampsa R2'. When 95% of the pods are ripe, the intensity of the brown colour on the pod is light to medium for 'Nocoma R2', while it is dark for 'Lono R2'. The seed of 'Nocoma R2' is medium sized, whereas the seed of 'Sampsa R2' is large. The colour of the hilum of 'Nocoma R2' is imperfect black whereas it is yellow on 'Lono R2'. 'Nocoma R2' matures earlier than the reference varieties.

Description:

HYPOCOTYL: medium to strong intensity of anthocyanin colouration

PLANT: oilseed type, indeterminate growth type, semi-erect growth habit, begins flowering and matures very early to early in season

STEM: light tawny pubescence on middle third

LEAF: medium to dark green, medium to strong blistering
LATERAL LEAFLET: rounded to pointed ovate, small

FLOWER: violet

POD: light to medium brown
SEED: medium size, spherical flattened shape, yellow ground colour of testa
HILUM: imperfect black
FUNICLE: same colour as the testa

Origin & Breeding History: 'Nocoma R2' (experimental designations CFS17.1.03 and C4M15028 R2) is the result of the cross between propriety selections conducted in 2011 by La Coop fédérée, Saint-Hyacinthe, Quebec, Canada. A modified single seed descent method was used to develop the variety. From 2011 to 2013, F1-F4 generations were grown in Santa Isabel, Puerto Rico, and advanced by modified single-seed descent. In 2013, filial generation F5, grown in Saint-Hyacinthe, was selected based on maturity and visual assessment of yield. In 2014, progeny rows from 2013 selection were evaluated in Saint-Hyacinthe, Quebec. The line that became 'Nocoma R2' was selected based on maturity and on visual assessment of lodging resistance and yield potential. From 2014 to 2018, 'Nocoma R2' was tested in replicated private trials in multiple locations. It was also tested as CFS17.1.03 or 'Nocoma R2' in public trials in the Maritime provinces, Quebec, Ontario, Manitoba, Saskatchewan and Alberta from 2017 to 2018.

Tests & Trials: The comparative trials for 'Nocoma R2' were conducted at the crop production research farm of La Coop fédérée in Saint-Hyacinthe, Quebec. The trials were planted in a RCB design with 3 replicates per variety during the 2017 growing season and 4 replicates per variety during the 2018 growing season. Each 7.5 square metre plot consisted of 4 rows, each 5 metres long with a row spacing of 0.38 metre. The seeding density was such that it resulted in a total of over 43 plants per variety per square metre. For each variety, the plant height was based on 30 measurements. Mean differences were significant at the 5% probability level based on LSD values.

Comparison tables for 'Nocoma R2' with reference varieties 'Akras R2', 'Lono R2' and 'Sampsa R2'

Plant height (cm)

Days to maturity

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Soybean: 'Nocoma R2' (right) with reference varieties 'Akras' (centre left), 'Lono R2' (left) and 'Sampsa R2' (centre right)

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Soybean: 'Nocoma R2' (top left) with reference varieties 'Akras R2' (bottom left), 'Lono R2' (top right) and 'Sampsa R2' (bottom right)

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Soybean: 'Nocoma R2' (top) with reference varieties 'Akras' (top centre), 'Lono R2' (bottom centre) and 'Sampsa R2' (bottom)