Whip Amth

Petunia

Denomination: 'Whip Amth'
Trade name: Whispers Amethyst
Botanical Name: Petunia ×hybrida
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: Mitchell Hanes, Goldsmith Seeds, Inc., Morgan Hill, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2009-01-30
Application Number: 09-6499
Grant of Rights Date: 2011-05-31
Certificate Number: 4088
Date rights surrendered: 2015-05-31

Variety Description

Varieties used for comparison: 'Petlavve' (Sanguna Lavender Vein) and 'Keilavbu' (Surfinia Sky Blue)

Summary: The plants of 'Whip Amth' have a creeping growth habit while those of 'Petlavve' have an upright growth habit. The plants of 'Whip Amth' are shorter than those of both reference varieties. The plants of 'Whip Amth' are wider than those of 'Petlavve' and narrower than those of 'Keilavbu'. The petioles of 'Whip Amth' are shorter than those of 'Petlavve'. The pedicels of 'Whip Amth' are shorter than those of both reference varieties. The flowers of 'Whip Amth' have a smaller diameter than those of 'Keilavbu'. The upper side of corolla lobes and inner side of the corolla tubes of 'Whip Amth' differ in colour from those of both reference varieties. The veins on the upper side of the corolla lobes of 'Whip Amth' have weak conspicuousness while the veins of 'Petlavve' have medium conspicuousness. The veins on the inner side of the corolla tubes of 'Whip Amth' have medium conspicuousness while the veins of 'Petlavve' have strong conspicuousness and those of 'Keilavbu' have weak conspicuousness.

Description:

PLANT: creeping growth habit, thin shoot

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

SEPAL: elliptic, no anthocyanin colouration
FLOWER: single type, salverform, purple veins
COROLLA LOBE: one colour on upper side, violet (RHS N81A and N80A) when newly opened, violet (RHS N78A) when fully opened, weak conspicuousness of veins on inner side, very weak to weak undulation of margin
COROLLA TUBE: white (RHS 155A) on inner side, medium conspicuousness of brown purple (RHS N77A) veins on inner side, yellowish white anthers before dehiscence

Origin & Breeding History: 'Whip Amth' originated from an open pollinated cross between the female parent Surfinia Amethyst and an unknown male parent. The new Petunia was bred and developed by the breeder Mitchell Hanes in August 2005, in Gilroy, California, United States. The resultant seed from the cross was sown in a greenhouse in January 2006. In April 2006, a single plant from the progeny was selected by the breeder based on flower colour, plant habit and production characteristics.

Tests & Trials: Trials for 'Whip Amth' were conducted in a polyhouse during the spring of 2010 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 27, 2010. Observations and measurements were taken from 10 plants of each variety on June 2, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Whip Amth' with reference varieties 'Petlavve' and 'Keilavbu'

Plant height (cm)

  'Whip Amth' 'Petlavve' 'Keilavbu'
mean 7.3 14.8 11.2
std. deviation 0.29 0.60 1.31

Plant width (cm)

  'Whip Amth' 'Petlavve' 'Keilavbu'
mean 36.9 30.6 53.5
std. deviation 0.99 2.49 2.59

Petiole length (cm)

  'Whip Amth' 'Petlavve' 'Keilavbu'
mean 0.5 1.4 0.4
std. deviation 0.09 0.08 0.05

Pedicel length (cm)

  'Whip Amth' 'Petlavve' 'Keilavbu'
mean 2.2 3.6 2.7
std. deviation 0.55 0.60 0.50

Flower diameter (cm)

  'Whip Amth' 'Petlavve' 'Keilavbu'
mean 5.4 5.2 6.2
std. deviation 0.24 0.18 0.23

Colour of upper side of corolla lobe (RHS)

  'Whip Amth' 'Petlavve' 'Keilavbu'
newly opened blend of N81A and N80A N/A closest to N87A with N80A at margin
fully opened closest to N78A N80A-B with N82C at base ages to lighter than 90C

Colour of corolla tube (RHS)

  'Whip Amth' 'Petlavve' 'Keilavbu'
inner side 155A with N77A veins N82A with N92A veins 4D

Click on image for larger view
Whip Amth
Petunia: 'Whip Amth' (left) with reference varieties 'Petlavve' (center) and 'Keilavbu' (right)

Click on image for larger view
Whip Amth
Petunia: 'Whip Amth' (left) with reference varieties 'Petlavve' (center) and 'Keilavbu' (right)

Click on image for larger view
Whip Amth
Petunia: 'Whip Amth' (left) with reference varieties 'Petlavve' (center) and 'Keilavbu' (right)

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