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Visulvena

Verbena

Denomination: 'Visulvena'
Trade name: Ipanema Silver
Botanical Name: Glandularia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: Har Stemkens, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-317-7511
Application Date: 2005-11-29
Application Number: 05-5188
Grant of Rights Date: 2007-11-28
Certificate Number: 3047
Date rights surrendered: 2008-12-18

Variety Description

Varieties used for comparison: 'Vertis' (Babylon White) and 'Suntapilavepi' (Tapien Lavender Pink)

Summary: Plants of 'Visulvena' have wider leaves than plants of 'Suntapilavepi'. The calyx of 'Visulvena' has more anthocyanin colouration than that of 'Vertis'. The main colour on the upper side of the corolla of 'Visulvena' is light blue violet, whereas it is white for 'Vertis' and violet for 'Suntapilavepi'.

Description:

PLANT: semi-upright to creeping, short to medium in height, medium in width

STEM: light to medium green, moderate pubescence, absent to very weak anthocyanin

LEAF: medium in length, narrow to medium in width
LEAF BLADE: ovate to rhombic, cuneate base, dissected with serrate margin, dark green, no anthocyanin
PETIOLE: medium to long

INFLORESCENCE: very small to small diameter, cylindrical in profile
CALYX: presence of anthocyanin on teeth only
COROLLA: small to medium in diameter, one-coloured, slightly streaking with age, light blue violet, weakly fading with age
COROLLA LOBES: free, straight to recurved, weak undulation of margin
COROLLA TUBE: protruding hair white in colour
COROLLA EYE ZONE: small, white.

Origin & Breeding History: 'Visulvena' was developed in Enkhuizen, The Netherlands, by the breeder Har Stemkens, an employee of Syngenta Seeds B.V. The new variety originated from a cross between the female parent 'X845-1' and the male parent 'W723-3'. A plant was selected from the resulting progeny in 2002. The variety has been propagated asexually through vegetative cuttings for over two years.

Tests & Trials: The tests and trials for 'Visulvena' were conducted in a polyhouse during the spring and summer of 2006, at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants of each variety. Rooted cuttings were transplanted into 10 cm pots on April 18, 2006. Observations and measurements were taken from 10 plants of each variety on June 17 to 20, 2006. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Visulvena' with reference varieties 'Vertis' and 'Suntapilavepi'

Plant height (cm)

  'Visulvena' 'Vertis' 'Suntapilavepi'
mean 11.2 19.5 7.5
std. deviation 2.30 2.74 1.25

Leaf blade length (mm)

  'Visulvena' 'Vertis' 'Suntapilavepi'
mean 31.5 29.7 21.2
std. deviation 5.02 2.45 4.02

Leaf blade width (mm)

  'Visulvena' 'Vertis' 'Suntapilavepi'
mean 18.0 19.9 12.9
std. deviation 4.24 1.97 3.11

Petiole length (mm)

  'Visulvena' 'Vertis' 'Suntapilavepi'
mean 9.9 8.7 5.6
std. deviation 1.66 1.34 1.71

Inflorescence diameter (cm)

  'Visulvena' 'Vertis' 'Suntapilavepi'
mean 3.6 4.7 3.8
std. deviation 0.27 0.33 0.29

Corolla diameter (mm)

  'Visulvena' 'Vertis' 'Suntapilavepi'
mean 16.9 16.3 14.9
std. deviation 0.74 0.67 0.74

Colour on upper side of corolla (RHS)

  'Visulvena' 'Vertis' 'Suntapilavepi'
main colour 76C white lighter than 77D, aging to 76D
secondary colour N/A N/A N82B

Click on image for larger view
Visulvena
Verbena: 'Visulvena' (left) with reference varieties 'Vertis' (centre) and 'Suntapilavepi' (right)

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