Kakegawa AU19

Osteospermum

Denomination: 'Kakegawa AU19'
Trade name: Crescendo Compact Purple
Botanical Name: Osteospermum
Applicant/Holder: Sakata Seed Corporation
2-7-1 Nakamachidai
Tsuzuki-Ku
Yokohama
224-0041
Japan
Breeder: Moriya Kawashima, Sakata Seed Corporation, Nagano, Japan
Akinobu Ui, Sakata Seed Corporation, Shizuoka, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2006-03-31
Application Number: 06-5406
Grant of Rights Date: 2008-05-29
Certificate Number: 3224
Date rights surrendered: 2009-06-26

Variety Description

Variety used for comparison: 'Wildside'

Summary: 'Kakegawa AU19' differs from the reference variety, 'Wildside', mainly in anthocyanin colouration of the shoot, leaf width, inflorescence diameter, colour of the upper side of the ray floret and disc colour before anther dehiscence. The anthocyanin colouration of the shoots of 'Kakegawa AU19' is absent to very weak whereas it is medium to strong in 'Wildside'. The leaves of 'Kakegawa AU19' are medium to wide whereas they are narrow in 'Wildside'. The inflorescence of 'Kakegawa AU19' is medium in diameter whereas it is very narrow to narrow in 'Wildside'. The upper side of the ray floret of 'Kakegawa AU19' is violet whereas it is purple in 'Wildside'. Before dehiscence, the disc of 'Kakegawa AU19' is purple whereas it is very light blue in 'Wildside'.

Description:

PLANT: erect to semi-erect shoots with very weak anthocyanin, medium height

LEAF: short, medium to wide, obovate shape, medium depth of incisions of margins, no variegation, medium green on the upper side

FLOWER: medium length peduncle, one or two complete ray floret whorls, medium inflorescence diameter
RAY FLORET: short to medium in length, medium width, obovate in shape, with a rounded - dentate apex, reflexing present, no inward rolling of longitudinal margins, horizontal attitude to slightly upwards with age, violet with purple stripes on the upper side, pale violet background with red-black stripes on the lower side
DISC: purple before dehiscence

Origin & Breeding History: 'Kakegawa AU19' originated from the cross of the proprietary breeding line, '2K-MY-6, as the female parent, with another proprietary breeding line, '9PR-2', as the male parent, conducted in 2001 in Kakegawa, Japan. The initial selection was made in 2001 based on compact growth habit, good basal branching and flower colour. Asexual propagation through the use of vegetative cuttings was first conducted in 2002.

Tests & Trials: The trials for 'Kakegawa AU19' were conducted in a polyhouse at BioFlora in St. Thomas, Ontario, during the spring of 2007. The trials included 15 plants of each variety grown from rooted cuttings and transplanted into 11 cm pots. Observations and measurements were taken from 10 plants of each variety. All colour characteristics were determined using the 2001 Royal Horticultural Society (RHS) colour chart.


Comparison tables for 'Kakegawa AU19' with reference variety 'Wildside'

Plant height (cm)

  'Kakegawa AU19' 'Wildside'
mean 27.3 21.4
std. deviation 2.49 2.87

Leaf width (cm)

  'Kakegawa AU19' 'Wildside'
mean 2.1 1.6
std. deviation 0.40 0.30

Inflorescence diameter (cm)

  'Kakegawa AU19' 'Wildside'
mean 6.5 5.3
std. deviation 0.24 0.42

Colour of ray floret on upper side (RHS)

  'Kakegawa AU19' 'Wildside'
main colour N78B 71C
secondary colour 71A 71A

Click on image for larger view
Kakegawa AU19
Osteospermum: 'Kakegawa AU19' (left) with reference variety 'Wildside' (right)

Click on image for larger view
Kakegawa AU19
Osteospermum: 'Kakegawa AU19' (left) with reference variety 'Wildside' (right)

Click on image for larger view
Kakegawa AU19
Osteospermum: 'Kakegawa AU19' (left) with reference variety 'Wildside' (right)

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