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Denomination: 'AKIV572-1'
Trade name: Superbena Royale Silverdust
Botanical Name: Glandularia ×hybrida
Applicant/Holder: Plant 21 LLC
32149 Aquaduct Road
Bonsall, California
United States of America
Breeder: Akiko Takahashi, Plant 21 LLC, Shiga, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2010-02-25
Application Number: 10-6875
Grant of Rights Date: 2012-08-23
Certificate Number: 4385
Date rights surrendered: 2015-07-07

Variety Description

Varieties used for comparison: 'KLEVP06349' (Fuego Denim Blue) and 'AKIV571-1' (Superbena Royal Chambray)

Summary: The plants of 'AKIV572-1' are narrower than the plants of 'KLEVP06349'. The stem of 'AKIV572-1' has weak anthocyanin colouration while the stem of 'KLEVP06349' has medium anthocyanin. The leaf of 'AKIV572-1' is shorter and narrower than the leaf of 'KLEVP06349'. The inflorescence of 'AKIV572-1' is smaller in diameter than the inflorescence of 'KLEVP06349'. The corolla of 'AKIV572-1' is smaller in diameter than the corolla of 'KLEVP06349'. The upper side of the corolla is blue violet for 'AKIV572-1' while it is a darker blue violet for the reference varieties.


PLANT: semi-upright to creeping growth habit
STEM: weak anthocyanin colouration on middle third

LEAF: ovate, not divided, crenate margin incisions, upper side medium green with no anthocyanin colouration, wedge shaped base

INFLORESCENCE: broad ovate in profile
CAYLX: anthocyanin colouration present in upper part
COROLLA TUBE: hairs purple at tip
COROLLA LOBES: not touching, longitudinal axis straight, weak margin undulation, one colour on upper side, even colour pattern, upper side blue violet (RHS N88C) when newly opened, lighter blue violet (RHS N88D) when fully opened, ages to light violet blue (RHS 91B), colour strongly fading with age
COROLLA EYE: medium size, whitish pink.

Origin & Breeding History: The variety 'AKIV572-1' originated from a controlled cross made in Higashiomi, Shiga, Japan on May 20, 2007. The female parent was a proprietary seedling designated 07V424-03 and the male parent was an unnamed seedling selected from the seed variety 'Nioimurasaki'. The new verbena was selected as a single plant from the resultant progeny on June 11, 2008, in Bonsall, California, USA. The variety was selected based on criteria for good branching characteristics, plant growth habit and disease resistance. The variety was first propagated by vegetative cuttings on June 12, 2008 in Bonsall, California, USA.

Tests & Trials: Trials for 'AKIV572-1' were conducted in a polyhouse during the summer of 2011, in St. Thomas, Ontario. The trial included a total of 15 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 15 cm shallow pots on May 3, 2011. Observations and measurements were taken from 10 plants of each variety on June 22, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'AKIV572-1' with reference varieties 'KLEVP06349' and 'AKIV571-1'

Plant width (cm)

  'AKIV572-1' 'KLEVP06349' 'AKIV571-1'
mean 47.7 69.7 46.5
std. deviation 4.08 4.54 2.69

Leaf length (mm)

  'AKIV572-1' 'KLEVP06349' 'AKIV571-1'
mean 40.8 50.8 36.3
std. deviation 2.04 3.52 2.87

Leaf width (mm)

  'AKIV572-1' 'KLEVP06349' 'AKIV571-1'
mean 18.9 34.4 22.2
std. deviation 1.91 2.95 1.75

Inflorescence diameter (cm)

  'AKIV572-1' 'KLEVP06349' 'AKIV571-1'
mean 4.9 6.4 4.2
std. deviation 0.39 0.26 0.15

Corolla diameter (mm)

  'AKIV572-1' 'KLEVP06349' 'AKIV571-1'
mean 15.6 21.0 15.1
std. deviation 1.17 0.67 1.20

Colour of upper side of corolla (RHS)

  'AKIV572-1' 'KLEVP06349' 'AKIV571-1'
newly opened N88C N87B N87A-B
fully opened N88D, aging to 91B N88C N88B, aging to 92A-B

Click on image for larger view
Verbena: 'AKIV572-1' (left) with reference varieties 'KLEVP06349' (centre) and 'AKIV571-1' (right)

Click on image for larger view
Verbena: 'AKIV572-1' (left) with reference varieties 'KLEVP06349' (centre) and 'AKIV571-1' (right)

Click on image for larger view
Verbena: 'AKIV572-1' (left) with reference varieties 'KLEVP06349' (centre) and 'AKIV571-1' (right)

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