Denomination: 'Diasclaro'
Trade name: Devotion Trailing Classic Rose
Botanical Name: Diascia barberae
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Har Stemkens, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2005-11-25
Application Number: 06-5650
Date Withdrawn: 2009-09-23

Variety Description

Variety used for comparison: 'Diastu' (Flying Colors Antique Rose)

Summary: The plants of 'Diasclaro' are smaller with a semi-upright growth habit while those of 'Diastu' are spreading. The corolla of 'Diasclaro' is shorter and wider than that of 'Diastu'. Incurving of the lower corolla lobe is medium to strong for 'Diasclaro' while it is absent for 'Diastu'. 'Diasclaro' has longer spurs than 'Diastu'.


PLANT: semi-upright growth habit, very short, narrow to medium width, dense
STEM: weak anthocyanin colouration below inflorescence

LEAF BLADE: medium to long, wide, acute apex, truncate to cordate base, medium to strong glossiness on upper side, no variegation, medium green on upper side

PEDICEL: medium length, weak to moderate anthocyanin colouration
COROLLA: short to medium length, very wide, blue pink (RHS 68A-B) on upper side with lighter blue pink towards base of lower corolla lobe
LOWER COROLLA LOBE: broader than long, moderate to strong incurving, weak undulation of margin, trichomal elaiophores present
COROLLA WINDOW: dark yellow
COROLLA SPURS: medium length, blue pink (RHS 68B), weak curvature, pointing downwards

Origin & Breeding History: 'Diasclaro' originated from a controlled cross between the female parent designated 'B0015-5' and the male parent designated 'B0015-4' which was made in August 1999 by the breeder Har Stemkens, an employee of Syngenta Seeds B.V. in Enkhuizen, The Netherlands. 'Diasclaro' was selected from the resulting progeny in May 2000 based on its earliness to flower, plant form and flower colour. Asexual reproduction by cuttings was first conducted in July 2000 in Enkhuizen, The Netherlands.

Tests & Trials: Trials for 'Diasclaro' were conducted in a polyhouse during the spring of 2008 at BioFlora Inc. in St. Thomas, Ontario. There were 15 plants of each variety. All plants were grown from rooted cuttings and transplanted into 11.5 cm pots on March 18, 2008. Observations and measurements were taken from 10 plants or parts of plants of each variety on May 12, 2008. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Diasclaro' with reference variety 'Diastu'

Plant height (cm)

  'Diasclaro' 'Diastu'
mean 19.3 22.2
std. deviation 2.74 2.20

Plant width (cm)

  'Diasclaro' 'Diastu'
mean 39.7 45.6
std. deviation 2.06 2.76

Corolla length (cm)

  'Diasclaro' 'Diastu'
mean 1.9 2.3
std. deviation 0.18 0.19

Corolla width (cm)

  'Diasclaro' 'Diastu'
mean 2.3 2.2
std. deviation 0.06 0.10

Click on image for larger view
Diascia: 'Diasclaro' (left) with reference variety 'Diastu' (right)

Click on image for larger view
Diascia: 'Diasclaro' (left) with reference variety 'Diastu' (right)

Click on image for larger view
Diascia: 'Diasclaro' (left) with reference variety 'Diastu' (right)

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