Denomination: 'USTUNI7502'
Trade name: Supertunia Mini Appleblossom
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: 2005-05-06
Application Number: 05-4881
Grant of Rights Date: 2007-08-17
Certificate Number: 2874
Date rights surrendered: 2017-08-17

Variety Description

Varieties used for comparison: 'Whip Ablos' (Whispers Appleblossom) and 'Keipamipihas' (Surfinia Patio Misty Pink)

Summary: 'USTUNI7502' has a less upright growth habit than 'Keipamipihas'. 'USTUNI7502' has a longer shoot and petiole than 'Keipamipihas'. 'USTUNI7502' has a larger flower diameter and stronger lobing of the corolla than 'Keipamipihas'. 'USTUNI7502' has stronger undulation of the corolla margin and differs in flower colour from the reference varieties.


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

SHOOTS: thin to medium thickness, medium to long, absent to very weak anthocyanin colouration

LEAVES: medium to long, medium to wide, ovate to elliptic, broad acute to rounded apex, no variegation, medium to dark green on upper side, blistering present, petiole medium to long

SEPALS: short to medium length, narrow to medium width, linear to spatulate, no anthocyanin colouration

FLOWERS: medium length pedicel, single corolla, small to medium diameter, trumpet shape
COROLLA: moderate to strong lobing, white with light blue violet at margin on upper side, light blue violet on lower side, veins yellow green and very weakly conspicuous, margin with strong undulation
COROLLA TUBE: medium length, white on inner side, veins very weakly conspicuous
ANTHERS: cream before and after pollen dehiscence.

Origin & Breeding History: 'USTUNI7502' originated from a controlled cross between a seed raised variety with small lavender flowers as the female parent and a wild Petunia species as the male parent. The cross was made by the breeder, Ushio Sakazaki, in Shiga, Japan on April 26, 2001. The seed from the cross was collected and sent to Gensingen, Germany for further breeding and selection. The new petunia was selected as a single plant from the resultant progeny on June 18, 2002, in Gensingen, Germany. Selection was based on improved branching characteristics and growth habit.

Tests & Trials: The tests and trials for 'USTUNI7502' were conducted in a polyhouse at BioFlora in St. Thomas, Ontario in the spring of 2006. The trials included 15 plants of each variety. Rooted cuttings were transplanted into six inch pots on April 17, 2006. Observations and measurements were taken from 10 plants of each variety. All colour measurements were made using the 2001 Royal Horticultural Society Colour Chart.

Comparison tables for 'USTUNI7502' with reference varieties 'Whip Ablos' and 'Keipamipihas'

Shoot length (cm)

  'USTUNI7502' 'Whip Ablos' 'Keipamipihas'
mean 29.8 22.3 18.4
std. deviation 4.36 3.12 5.57

Petiole length (mm)

  'USTUNI7502' 'Whip Ablos' 'Keipamipihas'
mean 9.7 9.7 2.8
std. deviation 3.59 2.41 0.79

Corolla diameter (cm)

  'USTUNI7502' 'Whip Ablos' 'Keipamipihas'
mean 4.9 5.2 3.6
std. deviation 0.23 0.30 0.17

Colour of corolla (RHS)

  'USTUNI7502' 'Whip Ablos' 'Keipamipihas'
upper side 155A 76C (more pink than) 155B, N155B around veins
lower side 76D 76D 75B-C

Secondary colour on corolla (RHS)

  'USTUNI7502' 'Whip Ablos' 'Keipamipihas'
inner side 76B-C N74D 75A-B

Corolla tube length (mm)

  'USTUNI7502' 'Whip Ablos' 'Keipamipihas'
mean 25.8 26.0 17.7
std. deviation 0.92 0.94 0.67

Click on image for larger view
Petunia: 'USTUNI7502' (left) with reference varieties 'Whip Ablos' (centre) and 'Keipamipihas' (right)

Date modified: