Denomination: 'Petpasyel'
Trade name: Sanguna Pastel Yellow
Botanical Name: Petunia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: David William Kerley, Cambridge, United Kingdom
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-11-09
Application Number: 06-5639
Grant of Rights Date: 2008-08-29
Certificate Number: 3336
Date rights surrendered: 2010-10-18

Variety Description

Variety used for comparison: 'Keiyeul' (Surfinia Lime)

Summary: 'Petpasyel' is a petunia variety which has a semi-upright growth habit, whereas the reference variety 'Keiyeul' has a creeping habit. The sepals of 'Petpasyel' are shorter than those of 'Keiyeul'. The inner side of the corolla tube of 'Petpasyel' is darker yellow than the corolla tube of 'Keiyeul'.


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

SHOOT: medium to thick, short to medium length, no anthocyanin colouration

LEAF: medium length, medium width, elliptic, narrow acute apex, no variegation, light to medium green upper side, no blistering, short petiole

SEPAL: medium to long, medium width, elliptic, no anthocyanin colouration

FLOWER: long pedicel, single, medium to broad diameter, funnelform
COROLLA: strong lobing, white upper side, white lower side, green yellow veins and weakly conspicuous on lobes, medium to strong undulation of margin
COROLLA TUBE: medium length, yellow on inner side, veins weakly conspicuous
ANTHER: yellowish white before and after pollen dehiscence

Origin & Breeding History: The variety 'Petpasyel' originated from a controlled cross made in July 2002 in Cambridge, United Kingdom. The female parent was identified as 01-84-1 and the male parent was the variety 'Keiyeul'. The new variety was selected from the resultant progeny as a single plant in May 2003, based on criteria for growth habit, earliness, flower colour and consistency. Asexual reproduction was first conducted in August 2003 in Enkhuizen, The Netherlands.

Tests & Trials: The trials for 'Petpasyel' were conducted during the spring of 2007, in a polyhouse in St. Thomas, Ontario. The trials consisted of a total of 15 plants of the candidate and reference varieties. All plants were grown from rooted cuttings planted into 15cm pots on April 24, 2007. Observations and measurements were taken from 10 plants of each variety on June 5, 2007. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour chart.

Comparison tables for 'Petpasyel' with reference variety 'Keiyeul'

Length of sepal (mm)

  'Petpasyel' 'Keiyeul'
mean 24.6 31.3
std. deviation 4.88 2.36

Main colour of corolla (RHS)

  'Petpasyel' 'Keiyeul'
upper side 155B 155B
lower side whiter than 155B whiter than 155B

Main colour of corolla tube (RHS)

  'Petpasyel' 'Keiyeul'
inner side 9A-B 4D with 151B veins

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

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

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

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