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Lono R2

Soybean

Denomination: 'Lono R2'
Previously Proposed Denomination: 'C4M13007 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: 15-8675
Grant of Rights Date: 2019-02-18
Certificate Number: 5920
Grant of Rights Termination Date: 2039-02-18

Variety Description

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

Summary: The lateral leaflet of 'Lono R2' is small whereas it is medium sized for the reference varieties. The plants of 'Lono R2' begin flowering early while the plants of 'Dares' begin flowering mid to late season. When 50% of the pods are ripe, the plants of 'Lono R2' are shorter than those of 'Tamula R2' and 'Dares'. 'Lono R2' has a light to medium brown pod colour whereas the pod is dark brown for 'Dares'. The plants of 'Lono R2' are earlier maturing than those of 'Dares'.

Description:

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

HYPOCOTYL: medium to strong intensity of anthocyanin colouration

LEAF: medium green colour, medium degree of blistering, pointed ovate to rounded ovate lateral leaflet, small lateral leaflet

FLOWER: violet

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

Origin & Breeding History: 'Lono R2' (experimental designation C4M13007 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 2010 and 2011, the F1-F4 generations were grown in Santa Isabel, Puerto Rico. In 2012, plants from the F5 generation, grown in Saint-Hyacinthe, Quebec, 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. From 2013 to 2017, 'Lono R2' was tested in the public trials of the Réseau Grandes Cultures du Québec, the Ontario Oil and Protein Seed Crop Committee and the Manitoba Crop Variety Evaluation Trials.

Tests & Trials: The comparative trials for 'Lono 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 'Lono R2' with reference varieties 'Durga R2', 'Tamula R2' and 'Dares'

Plant height (cm)

  'Lono R2' 'Durga R2' 'Tamula R2' 'Dares'
mean 2016 (LSD=5.51) 77.6 86.3 81.7 96.2
std. deviation (2016) 4.01 3.73 3.17 5.49
mean 2017 (LSD=1.96) 78.4 78.4 81.7 93.1
std. deviation 2017 3.11 2.47 2.60 2.83

Days to maturity

  'Lono R2' 'Durga R2' 'Tamula R2' 'Dares'
mean 2016 114 114 114 131
mean 2017 118 115 118 132

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

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