Petnitbl

Petunia

Denomination: 'Petnitbl'
Trade name: Sanguna Midnight Blue
Botanical Name: Petunia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: E. Barends, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2005-04-22
Application Number: 05-4775
Grant of Rights Date: 2007-11-28
Certificate Number: 3043
Date rights surrendered: 2008-12-18

Variety Description

Varieties used for comparison: 'Revolution Violet No. 3' (Surfinia Blue/Violet) and 'Kakegawa S28' (Supertunia Royal Velvet)

Summary: 'Petnitbl' has a more upright growth habit than the reference varieties. 'Petnitbl' has a narrower leaf and smaller flower diameter than 'Revolution Violet No. 3'. 'Petnitbl' has weaker corolla lobing than 'Revolution Violet No. 3'. 'Petnitbl' has darker purple flowers than the reference varieties. 'Petnitbl' has light purple anthers before pollen dehiscence while 'Revolution Violet No. 3' has yellowish-white anthers and 'Kakegawa S28' has greenish cream anthers.

Description:

PLANT: upright growth habit, tall, narrow to medium width

SHOOTS: thin to medium thickness, medium to long, medium anthocyanin colouration at shoot tips

LEAVES: short to medium length, narrow to medium width, elliptic, narrow acute apex, no variegation, medium green on upper side, blistering present, short to medium length petiole

SEPALS: medium to long, narrow to medium width, linear, anthocyanin colouration present

FLOWERS: medium length pedicel, single corolla, small to medium diameter, salverform shape
COROLLA: moderate lobing, very dark violet on upper side, blue violet with pink tones on lower side, veins dark purple and very weakly conspicuous, margin with weak undulation
COROLLA TUBE: medium to long, black on inner side, veins very weakly conspicuous
ANTHERS: light purple before pollen dehiscence, medium blue after dehiscence.

Origin & Breeding History: 'Petnitbl' originated from a controlled cross made in 1999 in Enkhuizen, The Netherlands, between the female parent, 'Y1003 1' and the male parent 'Z4120-1'. A plant was selected from the resultant progeny of the cross in June 2000, based on flower colour, flower shape, plant habit and early flowering. Asexual reproduction by vegetative cuttings was first conducted in August, 2000 in Enkhuizen, The Netherlands.

Tests & Trials: The tests and trials for 'Petnitbl' 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 'Petnitbl' with reference varieties 'Revolution Violet No. 3' and 'Kakegawa S28'

Plant height (cm)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
mean 26.3 26.5 19.7
std. deviation 5.25 3.02 2.52

Leaf width (cm)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
mean 2.1 3.5 2.9
std. deviation 0.31 0.42 0.27

Sepal length (mm)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
mean 20.0 16.0 19.6
std. deviation 2.00 1.15 1.84

Flower diameter (cm)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
mean 5.0 6.5 5.4
std. deviation 0.05 0.38 0.24

Colour of corolla (RHS)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
upper side 86A (much darker than) 83A (darker than) 86A (darker than)
lower side 83C with pink tones N87B-C with pink tones near veins and throat of corolla tube 83B

Colour of corolla tube (RHS)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
inner side 202A 77A-B N81B-C

Corolla tube length (mm)

  'Petnitbl' 'Revolution Violet No. 3' 'Kakegawa S28'
mean 28.2 22.8 23.9
std. deviation 1.14 1.69 1.66

Click on image for larger view
Petnitbl
Petunia: 'Petnitbl' (left) with reference varieties 'Revolution Violet No. 3' (centre) and 'Kakegawa S28' (right)

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