Denomination: 'USTUN47601'
Trade name: Supertunia Watermelon Charm
Botanical Name: Petunia ×hybrida
Applicant/Holder: Plant 21 LLC
32149 Aquaduct Road
Bonsall, California
United States of America
Breeder: Ushio Sakazaki, Shiga, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2012-03-09
Application Number: 12-7548
Grant of Rights Date: 2014-05-23
Certificate Number: 4782
Date rights surrendered: 2017-05-19

Variety Description

Variety used for comparison: 'Pic Redda' (Picnic Red)

Summary: The shoots of 'USTUN47601' are thin on the lower third and longer than those of 'Pic Redda' which are a medium thickness. The pedicels of 'USTUN47601' are shorter than those of 'Pic Redda'. The upper side of the corolla lobes of 'USTUN47601' are purple red whereas those of 'Pic Redda' are red. The veins on the inner side of the corolla tubes of 'USTUN47601' have strong conspicuousness whereas those of 'Pic Redda' have medium conspicuousness.


PLANT: upright to creeping growth habit, thin shoots on lower third
LEAF BLADE: elliptic, narrow acute to broad acute apex, no variegation, medium green on upper side, no blistering

SEPAL: linear, no anthocyanin colouration
FLOWER: single, salverform, red veins
COROLLA LOBE: one colour on upper side, upper side purple red (RHS N57A), weak conspicuousness of veins on upper side, weak undulation of margin
COROLLA TUBE: inner side white (RHS N155B, 155C) with brown (RHS 176B, 176C) veins, strong conspicuousness of veins on inner side
ANTHERS: yellowish white before dehiscence

Origin & Breeding History: 'USTUN47601' originated from a controlled cross conducted by the breeder between the female parent variety '08P357-02' and the male parent variety '09PJ23', both proprietary seedlings. The cross was conducted in Higashiomi-shi, Shiga, Japan on May 6, 2009. The new variety was selected as a single plant from the resultant progeny on May 27, 2010, in Bonsall, California, USA based on flower colour, flower size, branching characteristics and flowering time. 'USTUN47601' was first propagated by vegetative tip cuttings on May 28, 2010 in Bonsall, California, USA.

Tests & Trials: Trials for 'USTUN47601' were conducted in a polyhouse during the spring of 2013 in St. Thomas, Ontario. The trial included a total of 20 plants each of the candidate and reference variety. All plants were grown from rooted cuttings and transplanted into 15 cm pots on April 10, 2013. Observations and measurements were taken from 10 plants of each variety on May 14, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'USTUN47601' with reference variety 'Pic Redda'

Shoot length (cm)

  'USTUN47601' 'Pic Redda'
mean 15.0 13.0
std. deviation 0.64 0.45

Pedicel length (cm)

  'USTUN47601' 'Pic Redda'
mean 2.1 2.7
std. deviation 0.31 0.30

Colour of corolla lobes (RHS)

  'USTUN47601' 'Pic Redda'
upper side closest to N57A with more red closest to 45B

Click on image for larger view
Petunia: 'USTUN47601' (left) with reference variety 'Pic Redda' (right)

Click on image for larger view
Petunia: 'USTUN47601' (left) with reference variety 'Pic Redda' (right)

Click on image for larger view
Petunia: 'USTUN47601' (left) with reference variety 'Pic Redda' (right)

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