Sunviocoba

Viola

Denomination: 'Sunviocoba'
Trade name: Violina Cobalt Blue
Botanical Name: Viola cornuta
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Tokyo
108-0014
Japan
Breeder: Naoto Takamura, Yamanashi, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2009-03-05
Application Number: 09-6516
Grant of Rights Date: 2011-10-03
Certificate Number: 4198
Date rights surrendered: 2014-10-03

Variety Description

Variety used for comparison: 'Sunviopapu' (Violina Purple Blue)

Summary: The leaf blade is shorter for 'Sunviocoba' than for 'Sunviopapu. The lateral and lower petals of 'Sunviocoba' are violet in colour while the lateral and lower petals of 'Sunviopapu' are light blue violet with a broad band of violet to violet blue at the margin. The lower petal of 'Sunviocoba' has a darker yellow basal spot than the lower petal of 'Sunviopapu'.

Description:

PLANT: upright growth habit

LEAF BLADE: elliptic to ovate shape, acute and obtuse apex, cuneate and truncate base, crenate margin, light to medium green, medium glossiness on upper side

FLOWER: peduncle with absent or very sparse pubescence, white hairs at throat, no pubescence on spur
UPPER PETAL: upper side violet (RHS N81B) with darker violet (RHS N81A) veins
LATERAL PETAL: violet (RHS N81A) with tones of blue violet (RHS N88A-B)
LOWER PETAL: violet (RHS N81A) with tones of blue violet (RHS N88A-B), brown purple (RHS N77A) striped markings, markings weak to medium in conspicuousness, yellow (RHS 12A) basal spot.

Origin & Breeding History: The variety 'Sunviocoba' originated by a controlled pollination made at Yokaichi, Shiga, Japan in April 2004. The female parent was a proprietary line designated 01V-132-1 and the male parent was a proprietary line designated VF177-3. Seeds from the cross were germinated and grown to maturity. One plant was selected by the breeder on April 2005 and propagated by cuttings. A pot trial was carried out from October 2005 to April 2006 where it was concluded that the new variety was distinct, uniform and stable.

Tests & Trials: Trials for 'Sunviocoba' were conducted in a polyhouse during the spring of 2010 in St. Thomas, Ontario. The trial included a total of fifteen plants of the candidate and reference varieties. The candidate variety was grown from rooted cuttings while the reference was grown from seed. All plugs were transplanted into 11 cm pots on May 11, 2010. Observations and measurements were taken from ten plants or parts of plants on June 7, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Sunviocoba' with reference variety 'Sunviopapu'

Leaf blade length (cm)

  'Sunviocoba' 'Sunviopapu'
mean 2.6 3.2
std. deviation 0.16 0.24

Colour of upper side of petals (RHS)

  'Sunviocoba' 'Sunviopapu'
upper petal N81B with N81A veins N82A, darker at base
lateral petals N81A with tones of N88A-B 94D with band of N87A-93B at margin
lower petal N81A with tones of N88A-B 94D with band of N87A-93B at margin
lower petal - basal spot 12A 9A

Click on image for larger view
Sunviocoba
Viola: 'Sunviocoba' (left) with reference variety 'Sunviopapu' (right)

Click on image for larger view
Sunviocoba
Viola: 'Sunviocoba' (left) with reference variety 'Sunviopapu' (right)

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