Kristian

Soybean

Variety Description

Varieties used for comparison: 'Neptune', 'Ajico', 'OAC Evolution' and 'Albenga'

Summary: When the cotyledons are completely unfolded, the hypocotyl of 'Kristian' has a medium intensity of anthocyanin while anthocyanin colouration is strong for 'Neptune'. When 50% of the flowers are open, the branch attitude of 'Kristian' is semi-erect whereas it is semi-erect to horizontal for 'Ajico'. On the middle third of the main stem, the pubescence of 'Kristian' is tawny whereas it is light tawny for 'Albenga'. The terminal and lateral leaflets of 'Kristian' are medium sized whereas they are small for 'Neptune', 'OAC Evolution' and 'Albenga'. The intensity of green colour of the leaf of 'Kristian' is medium whereas it is dark for 'Neptune'. When 95% of the pods are ripe, the intensity of brown colour of the pod of 'Kristian' is medium to dark whereas it is light for 'Ajico'. The plants of 'Kristian' taller than those of 'Neptune' and 'Ajico'. At maturity, the one hundred seed weight of 'Kristian' is less than that of 'Neptune' and more than that of 'OAC Evolution'. The seed shape of 'Kristian' is elongated whereas it is spherical flattened for 'Ajico' and 'OAC Evolution'. The seed of 'Kristian' has an intermediate glossiness whereas the seed of 'Neptune' and 'Albenga' is opaque. The plants of 'Kristian' mature earlier than the plants of 'OAC Evolution' and 'Albenga'.

Description:

HYPOCOTYL: medium intensity of anthocyanin colouration

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

LEAF: medium degree of blistering, medium green upper side
TERMINAL LEAFLET: ovoid, medium size
LATERAL LEAFLET: pointed ovate, medium size

FLOWER: violet

POD: medium to dark brown
SEED: medium size, elongated, yellow ground colour of testa with intermediate glaucosity
HILUM: imperfect yellow

Origin & Breeding History: 'Kristian' originated from a cross between the varieties 'Naya' and 'SY Emily' conducted in 2013 in Probstdorf, Austria using the pedigree method of plant breeding. From 2013 to 2015, four generations were advanced by single pod decent method, line selection and yield testing Selection criteria included yield, seed quality traits and lodging resistance. 'Kristian' was selected in the F4 generation. Breeder seed was produced from eighteen selected F8 lines in 2019.

Tests & Trials: The comparative trials for 'Kristian' conducted in Saint-Jean-sur-Richelieu, Québec during the 2022 and 2023 growing seasons. Trials were planted in a RCB design and consisted of 3 replicates for each variety. Plots consisted of 3 rows, 5 metres in length and a row spacing of 56 cm. The trial consisted of 400 plants per variety. Measured characteristics were based on 20 measurements per variety per year. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison tables for 'Kristian' with reference varieties 'Neptune', 'Ajico', 'OAC Evolution' and 'Albenga'

Plant height (cm)

Seed weight (grams per 100 seeds) (g)

Number of days to maturity (from planting to maturity)

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Soybean: 'Kristian' (centre) with reference varieties 'Neptune' (top left), 'Ajico' (top right), 'Albenga' (bottom right) and 'OAC Evolution' (bottom left)

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Soybean: 'Kristian' (centre) with reference varieties 'Neptune' (top left), 'Ajico' (top right), 'Albenga' (bottom right) and 'OAC Evolution' (bottom left)