Denomination: 'Petrewis'
Trade name: Whispers Red '11
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: 10-6829
Grant of Rights Date: 2012-06-22
Certificate Number: 4336
Date rights surrendered: 2014-06-22

Variety Description

Variety used for comparison: 'Sunremi' (Surfinia Red)

Summary: The plants of 'Petrewis' have longer shoots than the plants of 'Sunremi'. The leaf blade of 'Petrewis' is wider than the leaf blade of 'Sunremi'. The upper side of the leaf blade is medium green for 'Petrewis' while it is dark green for 'Sunremi'. The inner side of the corolla tube for 'Petrewis' is blue pink with brown veins while the inner side of the corolla tube of 'Sunremi' is light yellow with brown veins.


PLANT: upright to creeping growth habit, medium shoot thickness

LEAF: ovate, narrow to broad acute apex, no variegation, medium green on upper side, no blistering

SEPAL: linear, no anthocyanin colouration
FLOWER: single, funnelform, red veins
COROLLA LOBE: one colour on upper side, upper side red (RHS 46B) when fully opened with dark purple red (RHS 46A) veins, moderately conspicuous veins, medium to strong undulation of margin
COROLLA TUBE: inner side blue pink (RHS 186D) with brown (RHS 166B) veins, moderate conspicuousness of veins on inner side, anthers yellowish white before dehiscence.

Origin & Breeding History: The variety 'Petrewis' originated from a cross pollination made in August 2005 at Enkhuizen, the Netherlands. The female parent was a red to dark salmon coloured proprietary seedling, designated E5327 and the male parent was a burgundy coloured proprietary seedling, designated B1256-1. The resultant seed was sown in a greenhouse in February 2006 in Enkhuizen. In May 2006, a single plant was selected from the progeny, based on criteria for flower colour and size, early flowering and excellent branching characteristics.

Tests & Trials: Trials for 'Petrewis' 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 21, 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 'Petrewis' with reference variety 'Sunremi'

Shoot length (cm)

  'Petrewis' 'Sunremi'
mean 24.7 17.5
std. deviation 2.45 2.06

Leaf blade width (cm)

  'Petrewis' 'Sunremi'
mean 3.1 2.6
std. deviation 0.23 0.17

Colour of corolla lobe (RHS)

  'Petrewis' 'Sunremi'
upper side 46B with 46A veins 45B with 46A veins

Colour of corolla tube (RHS)

  'Petrewis' 'Sunremi'
inner side 186D with 166B veins 12D with 173A veins

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

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

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

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