Abaca

Soybean

Variety Description

Varieties used for comparison: 'Fjord', 'Jari', 'Anser' and 'Aurelina'

Summary: The intensity of anthocyanin colouration on the hypocotyl of 'Abaca' is weak whereas it is of medium intensity on that of 'Fjord', 'Jari' and 'Anser'. When 50% of the flowers are open, the branching attitude of 'Abaca' is semi-erect whereas the branch attitude of 'Fjord' is erect. When 95% of the pods are ripe, the pubescence on the middle third of the stem of 'Abaca' is light tawny whereas the pubescence is tawny on the reference varieties. The plants of 'Abaca' are taller than the plants of 'Fjord' and 'Anser' and shorter than the plants of 'Aurelina'. The intensity of brown colour on the pod of 'Abaca' is light whereas it is of medium intensity for the reference varieties. The plants of 'Abaca' mature later than the plants of 'Fjord' and 'Anser'. At maturity, the shape of the seed of 'Abaca' is spherical flattened whereas the seeds of 'Anser' and 'Aurelina' are elongated. The hilum of 'Abaca' is an imperfect yellow whereas the hilum of 'Anser' and 'Aurelina' is yellow. The seed of 'Abaca' has an intermediate glossiness whereas the seed of 'Aurelina' is opaque and that of 'Fjord' is bright. The seed weight of 'Abaca' is greater than that of 'Fjord' and 'Jari' and is less than that of 'Anser'.

Description:

HYPOCOTYL: weak intensity of anthocyanin colouration

PLANT: oilseed type, indeterminate growth type, semi-erect branch attitude, light tawny pubescence on middle third of main stem, begins flowering very early to early season, matures early season

LEAF: weak blistering, ovoid shaped terminal leaflet, small terminal leaflet, pointed ovate lateral leaflet, small lateral leaftlet, medium green intensity

FLOWER: violet

POD: light brown
SEED: medium size, spherical flattened, yellow ground colour of testa
HILUM: imperfect yellow, intermediate glossiness, yellow funicle

Origin & Breeding History: 'Abaca' (experimental designation SZD O1772) originated from a cross made in Reichersberg, Austria between 'SY Eliot' and 'SY Emily' in 2012. The crossed material was derived using a single-pod descent technique until the F4 generation when a single plant was selected for maturity, protein content, yield, lodging resistance and resistance to pod shattering in 2013. Seed from this plant was harvested and maintained by pedigree selection until the F4:7 generation when 9 plants were selected for morphological uniformity in 2016 to establish breeder seed.

Tests & Trials: The comparative trials for 'Abaca' were conducted in St-Jean-sur-Richelieu, Quebec, Canada in 2020 and 2021. The trials were planted in a RCB design with 3 replicates per variety. Each plot was 8.4 square metres and consisted of three 5 metre long rows spaced 0.56 metres apart. A seeding density of 26 seeds per linear metre resulted in 400 plants per replicate per variety. Measurements were taken from 20 plants or parts of 20 plants of each variety per year except for the seed weight with 10 measurements per variety per year. Mean differences were significant at the 5% probability level based on paired Student's t-test.

Comparison tables for 'Abaca' with reference varieties 'Fjord', 'Jari', 'Anser' and 'Aurelina'

Plant height (cm)

Seed weight (grams per 100 seeds) (g)

Time of maturity (number of days from planting to maturity)

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Soybean: 'Abaca' (centre) with reference varieties 'Aurelina' (top left), 'Anser' (top right), 'Jari' (bottom left) and 'Fjord' (bottom right)

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Soybean: 'Abaca' (centre) with reference varieties 'Jari' (top left), 'Fjord' (top right), 'Aurelina' (bottom left) and 'Anser' (bottom right)

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Soybean: 'Abaca' (bottom centre) with reference varieties 'Jari' (top left), 'Fjord' (top right), 'Anser' (bottom left) and 'Aurelina' (bottom right)