Sunsenebatubu

Cineraria

Denomination: 'Sunsenebatubu'
Trade name: Senetti True Blue
Botanical Name: Senecio cruentus x S. heritieri
Applicant/Holder: Suntory Flowers Limited
Administrative Division
4-17-5 Shiba, Minato-ku
Tokyo
108-0014
Japan
Breeder: Kiyoshi Miyazaki, Shiga, Japan
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2007-04-20
Application Number: 07-5897
Grant of Rights Date: 2009-08-25
Certificate Number: 3568
Date rights surrendered: 2014-07-31

Variety Description

Variety used for comparison: 'Sunsenebu' (Senetti Blue)

Summary: 'Sunsenebatubu' has shorter plants and narrower leaf blades than 'Sunsenebu'. The upper side of the ray florets of 'Sunsenebatubu' are violet blue whereas those of 'Sunsenebu' are violet with darker violet tones.

Description:

PLANT: upright bushy growth habit, medium degree of branching
STEM: light to medium green, weak anthocyanin colouration, very sparse pubescence, medium thickness, smooth

LEAF: alternate arrangement along stem, simple type
LEAF BLADE: cordate shape, acute apex, cordate base, dentate margin, medium to strong degree of lobing, strong degree of undulation of margin, medium to strong degree of indentation of margin, sparse pubescence on upper side, light to medium green on upper side, pattern of venation is palmate
PETIOLE: absent or very weak anthocyanin colouration

INFLORESCENCE: head type
FLOWER: medium number of ray florets
RAY FLORET: short, narrow to medium width, straight along longitudinal axis of majority, elliptic shape, acute to obtuse apex, one colour on upper side, upper side is violet blue, lower side is violet blue fading to light violet blue then white towards base
DISC: present

Origin & Breeding History: 'Sunsenebatubu' originated from a cross made in January 1997 between the female parent, a breeding line designated '7S-68c', and the male parent, a seedling of Senecio heritieri. The cross was conducted in Hokuto-shi, Yamanashi, Japan. The resultant seedlings were grown in pots in a glasshouse and evaluated. In October 1998, 'Sunsenebatubu' was selected based on its plant growth habit, flower size and flower colour. It was later propagated by cuttings and grown in pots in Hokuto-shi, Yamanashi, Japan where it was subjected to trials starting in July 2000.

Tests & Trials: Trials for 'Sunsenebatubu' were conducted in a polyhouse during the winter and spring of 2008 at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants per variety. The plants were grown from rooted cuttings which were transplanted into 15 cm pots on March 19, 2008. The plants were provided a natural cold treatment for approximately 5 weeks at 10°C until flower buds were visible and then grown further at 18°C. Measured characteristics were based on measurements taken from 10 plants or parts of plants on May 27, 2008. All colour determinations were made using the 2001 Royal Horticulture Society (RHS) Colour Chart.


Comparison tables for 'Sunsenebatubu' with reference variety 'Sunsenebu'

Plant height (cm)

  'Sunsenebatubu' 'Sunsenebu'
mean 24.9 30.6
std. deviation 1.10 1.65

Leaf blade width (cm)

  'Sunsenebatubu' 'Sunsenebu'
mean 4.9 6.1
std. deviation 0.37 0.47

Colour of ray floret (RHS)

  'Sunsenebatubu' 'Sunsenebu'
upper side - newly opened more blue than N89B N/A
upper side - at maturity darker than 94A N80A-B with N87A tones
lower side 96D, 94A fading to 97D then white towards base N81A-B with 76A streaked undertones

Click on image for larger view
Sunsenebatubu
Cineraria: 'Sunsenebatubu' (left) with reference variety 'Sunsenebu' (right)

Click on image for larger view
Sunsenebatubu
Cineraria: 'Sunsenebatubu' (left) with reference variety 'Sunsenebu' (right)

Click on image for larger view
Sunsenebatubu
Cineraria: 'Sunsenebatubu' (left) with reference variety 'Sunsenebu' (right)

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