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Podaga R2

Soybean

Denomination: 'Podaga R2'
Previously Proposed Denomination: 'CKX4112 R2'
Botanical Name: Glycine max
Applicant/Holder: La Coop fédérée
19235, avenue Saint-Louis
Saint-Hyacinthe, Quebec
J2T 5J4
Canada
Breeder: Jérôme Auclair, La Coop fédérée, Saint-Hyacinthe, Quebec
Application Date: 2015-06-23
Provisional Protection:: 2015-06-23
Application Number: 15-8674
Grant of Rights Date: 2019-02-18
Certificate Number: 5921
Grant of Rights Termination Date: 2039-02-18

Variety Description

Varieties used for comparison: 'Lono R2', 'Tamula R2' and 'Dares'

Summary: The intensity of the anthocyanin colouration on the hypocotyl of 'Podaga R2' is strong whereas it is of medium intensity on 'Tamula R2'. The lateral leaflet of 'Podaga R2' is medium sized whereas it is small for 'Lono R2'. The plants of 'Podaga R2' begin flowering very early to early while the plants of 'Dares' begin flowering mid to late season. When 50% of the pods are ripe, the plants of 'Podaga R2' are shorter than those of 'Dares'. 'Podaga R2' has a light to medium brown pod colour whereas the pod is dark brown for 'Dares'. The seed shape of 'Podaga R2' is elongated whereas it is spherical flattened for 'Lono R2' and 'Tamula R2'. The plants of 'Podaga R2' are earlier maturing than those of 'Dares' and later maturing than those of 'Lono R2' and 'Tamula R2'.

Description:

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

HYPOCOTYL: strong intensity of anthocyanin colouration

LEAF: medium to dark green colour, medium degree of blistering, pointed ovate lateral leaflet, medium sized lateral leaflet
FLOWER: violet

POD: light to medium intensity of brown colour
SEED: elongated shape, yellow ground colour of testa
HILUM: yellow, yellow funicle

Origin & Breeding History: 'Podaga R2' (experimental designation CKX4112 R2) is the result of a cross between proprietary selections conducted in 2008 by La Coop fédérée in Rancagua, Chile. A modified single seed descent method was used to develop the variety. In 2009 and 2010, the F1-F4 generations were grown in Santa Isabel, Puerto Rico. In 2011, plants from the F5 generation, grown in Saint-Hyacinthe, Québec, were selected based on a visual assessment of lodging resistance, the number of pods per plant, and early maturation. The selected line was compared with the other sister lines within the recombinant family, which were derived from single seed descent. 'Podaga R2' was tested in the public trials of the Réseau Grandes Cultures du Québec (2012, 2016 et 2017) and the Manitoba Crop Variety Evaluation Trials (2014 to 2016).

Tests & Trials: The comparative trials for 'Podaga R2' were conducted during the 2016 and 2017 growing seasons in field site Techno 5 at La Coop fédérée, in Saint-Hyacinthe, Quebec. Each trial consisted of 3 replications per variety distributed in a RCB design. Each replicate consisted of four 5 metre long rows spaced 0.38 metres apart. The seeding density was such that it resulted in a total of over 750 plants per variety for each trial. For each variety, the plant height was based on 20 measurements in 2016 and 30 measurements in 2017. Mean differences were significant at the 5% probability level based on LSD values.


Comparison tables for 'Podaga R2' with reference varieties 'Lono R2', 'Tamula R2' and 'Dares'

Plant height (cm)

  'Podaga R2' 'Lono R2' 'Tamula R2' 'Dares'
mean 2016 (LSD=5.58) 79.3 77.6 81.7 96.2
std. deviation (2016) 2.89 4.01 3.17 5.49
mean 2017 (LSD=1.88) 84.0 78.4 81.7 93.1
std. deviation 2017 2.55 3.11 2.6 2.83

Days to maturity

  'Podaga R2' 'Lono R2' 'Tamula R2' 'Dares'
mean 2016 120 114 114 131
mean 2017 124 118 118 132

Click on image for larger view
Podaga R2
Soybean: 'Podaga R2' (second from left) with reference varieties 'Dares' (furthest left), 'Lono R2' (centre) and 'Tamula R2' (furthest right)

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