|Previously Proposed Denomination:||'1857 RR'|
|Botanical Name:||Brassica napus|
Lantmännen SW Seed AB
Lantmännen SW Seed AB, Svalöv, Sweden
|Agent in Canada:||
Lantmännen SW Seed Ltd.
510 Blackthorn Crescent
|Grant of Rights Date:||2007-03-26|
|Date rights surrendered:||2009-02-03|
Varieties used for comparison: 'SW ARROW' and 'Impulse'
Summary: '1839V' differs from 'SW ARROW' and 'Impulse' in glyphosate tolerance, depth of leaf margin dentation, days to flowering, silique length and silique beak length. '1839V' is resistant to glyphosate herbicides whereas 'Impulse' is not. The depth of the leaf margin dentation of '1839V' is shallow whereas it is medium in depth in 'SW ARROW'. The plants of '1839V' flower earilier than both reference varieties. The silique of '1839V' is shorter than that of 'Impulse'. The silique beak of '1839V' is longer than that of 'Impulse'.
PLANT: open-pollinated Round-up Ready spring seasonal type, short at maturity
LEAF: dark green, few lobes, rounded margins with shallow dentation
SILIQUE: short to medium in length, medium to long beak, medium-length pedicel
QUALITY CHARACTERISTICS: erucic acid 0.04% of total fatty acids, high glucosinolate content less than 30 µmol/g
Origin & Breeding History: '1839V' was developed by Svalöf Weibull AB, Svalöv, Sweden.The variety was derived from a cross made in 1998, with selections made in the F2 based on quality traits and blackleg tolerance. Pedigree selection was performed in subsequent generations with one of the last selections being the original plant of '1839V'. Breeder seed multiplication began on the F5 generation.
Tests & Trials: Tests and trials were conducted during the summers of 2004 and 2005 at Saskatoon, Saskatchewan. Plots consisted of 2 replicates of 8 rows spaced 15 cm apart, were 1.75 metres wide and 3.25 metres long. Plots were laid out in randomized complete block design.
Comparison tables for '1839V' with reference varieties 'SW ARROW' and 'Impulse'
Means are based on a two year average of 60 plant parts for silique measurements. Differences are significant at the 2% probability level based on LSD values.
Days to flowering
Silique length (mm) (p less than 0.001)
Silique beak length (mm)(p less than 0.001)
Silique pedicel length (mm)(p less than 0.001)
Plant height at maturity (cm)(p less than 0.001)
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