Denomination: 'Petdero'
Trade name: Sanguna Rose
Botanical Name: Petunia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Theodorus C. M. van Kleinwee, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2010-02-09
Application Number: 10-6826
Grant of Rights Date: 2012-06-22
Certificate Number: 4334
Date rights surrendered: 2013-05-24

Variety Description

Variety used for comparison: 'Petrosena' (Sanguna Lipstick)

Summary: The leaf blade of 'Petdero' is elliptic in shape while the leaf blade of 'Petrosena' is ovate. When fully open, the upper side of the corolla is purple for 'Petdero' while it is purple red for 'Petrosena'. The corolla tube of 'Petdero' is shorter than the corolla tube of 'Petrosena'. The inner side of the corolla tube of 'Petdero' has purple red veins while the inner side of the corolla tube of 'Petrosena' has dark purple red veins.


PLANT: upright to creeping growth habit, medium shoot thickness

LEAF: elliptic, narrow 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 (brighter than RHS 61B) when newly opened, purple (brighter and more pink than RHS N74A) when fully opened, moderately conspicuous veins, weak to medium undulation of margin
COROLLA TUBE: inner side white (RHS N155D) with purple red (RHS N66A) veins, moderate conspicuousness of veins on inner side, anthers yellowish white before dehiscence.

Origin & Breeding History: The variety 'Petdero' originated from a cross pollination made in August 2004 at Enkhuizen, the Netherlands. The female parent was a dark rose coloured proprietary seedling, designated D1314-1 and the male parent was a pink coloured proprietary seedling, designated C1328-1. The resultant seed was sown in a greenhouse in February 2005 in Enkhuizen. In May 2005, a single plant was selected from the progeny, based on criteria for growth habit, flower colour and abundant and continuous flowering throughout the season.

Tests & Trials: Trials for 'Petdero' were conducted in a polyhouse during the spring 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 pots on April 20, 2011. Observations and measurements were taken from 10 plants of each variety on May 26, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Petdero' with reference variety 'Petrosena'

Colour of corolla lobe (RHS)

  'Petdero' 'Petrosena'
upper side - newly opened 61B (brighter than) N57A
upper side - fully opened N74A (brighter and pinker than) N66B

Length of corolla tube (cm)

  'Petdero' 'Petrosena'
mean 2.5 3.0
std. deviation 0.11 0.14

Colour of corolla tube (RHS)

  'Petdero' 'Petrosena'
inner side N155D with N66A veins N155D with N186D veins

Click on image for larger view
Petunia: 'Petdero' (left) with reference variety 'Petrosena' (right)

Click on image for larger view
Petunia: 'Petdero' (left) with reference variety 'Petrosena' (right)

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