Denomination: 'Dapasulo'
Trade name: Dahlietta Louise
Botanical Name: Dahlia
Applicant/Holder: Ball Horticultural Company
622 Town Road
West Chicago, Illinois
United States of America
Breeder: Ball Horticultural Company, West Chicago, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-10-12
Application Number: 05-5107
Grant of Rights Date: 2007-09-25
Certificate Number: 2924
Date rights surrendered: 2010-09-20

Variety Description

Varieties used for comparison: 'Betty' (Dahlietta Betty) and 'Balnovost' (Dahlietta Violet Frost)

Summary: 'Dapasulo' is taller in plant height than 'Betty' and 'Balnovost'. The leaf of 'Dapasulo' is slightly longer with more incisions than'Betty'. 'Dapasulo' has a darker green leaf colour than 'Betty' and 'Balnovost'. The peduncle of 'Dapasulo' has weaker intensity of anthocyanin colouration than 'Betty' and 'Balnovost'. 'Dapasulo' is a daisy-eyed double flower head type while 'Betty' and 'Balnovost' are semi-double. The ray floret of 'Dapasulo' is purple red with a white margin while it is violet in 'Betty'.


PLANT: upright habit
STEM: light green, no anthocyanin colouration

LEAF: simple type, dark green, wings on petiole present, medium number of moderately deep incisions, weakly rugose texture on upper surface, veins on upper surface raised

FLOWER: very weak to weak anthocyanin colouration of the peduncle, at the same level of the foliage, right angle attitude relative to peduncle, decorative daisy-eyed double type, dark pink bicolour, moderate density of ray florets
RAY FLORET: reflexing along the longitudinal axis, slight curvature of the distal quarter, weakly concave in u-shape cross section at midpoint, flat lateral margin at middle, pointed tip, even colour pattern, purple red (RHS N66A), white (RHS 155B) edge of margin of upper side, purple red (RHS N66B) streaks with blue pink (RHS N66D) and whitish streaks with yellow base on lower side
DISC: small diameter in relation to flower head, yellow colour before and at anther dehiscence

Origin & Breeding History: 'Dapasulo' was discovered as a sport of the dahlia 'Carol' on October 1, 2001 at Rijsenhout, The Netherlands.

Tests & Trials: Trials were conducted in a polyhouse in the spring/summer of 2006 in St. Thomas, Ontario. The trial included 15 plants of the candidate and reference varieties each individually grown in 15cm pots. Observations and measurements were taken from 10 plants of each variety. All colour measurements were made using the 2001 RHS colour chart.

Comparison tables for 'Dapasulo' with reference varieties 'Betty' and 'Balnovost'

Plant height: (cm)

  'Dapasulo' 'Betty' 'Balnovost'
mean 24.2 19.4 20.8
std. deviation 2.17 1.74 1.21

Leaf length: (cm)

  'Dapasulo' 'Betty' 'Balnovost'
mean 10.5 7.8 10.0
std. deviation 1.28 0.76 0.86

Ray Floret colour: (RHS)

  'Dapasulo' 'Betty' 'Balnovost'
primary on upper side N66A N78A-N74A darker than N66B
secondary on upper side 155B on margin edge N66A at base 73B-C
primary on lower side streaks of N66B N74B-C pinker than 75B
secondary on lower side N66D & whitish streaks N74A 64A-B

Click on image for larger view
Dahlia: 'Dapasulo' (left) with reference varieties 'Dahlietta® Betty' (centre) and 'Balnovost' (right)

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