Denomination: 'Diasttralav'
Trade name: Devotion Trailing Lavender Pink
Botanical Name: Diascia barberae
Applicant/Holder: Syngenta Seeds B.V.
P.O. Box 2
1600 AA
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: 2005-04-28
Application Number: 05-4808
Date Withdrawn: 2007-06-25

Variety Description

Varieties used for comparison: 'Diastu' (Flying Colors Trailing Antique Rose) and 'Balwinlapi' (Wink Lavender Pink)

Summary: 'Diasttralav' has a semi-upright growth habit, whereas 'Diastu' is spreading and 'Balwinlapi' has upright to semi-upright plants. The lateral lobes of the corolla of 'Diasttralav' are more reflexed than the lateral lobes of the reference varieties. 'Diasttralav' has very sparsely distributed trichomal elaiophores on the lower lobe of the corolla. 'Balwinlapi' has no elaiophores and 'Diastu' has a moderate number. 'Diasttralav' also differs slightly in flower colour from the two reference varieties.


PLANT: semi-upright growth habit, short in height, narrow in width, medium branching, no anthocyanin colouration on stems

LEAF BLADE: medium green, medium length, medium width, no variegation, no anthocyanin colouration, cordate base, narrow acute apex, entire margin (with sparse, shallow incisions), no hairiness

PEDUNCLE: short to medium internodes with medium length pedicels
COROLLA: short to medium length, medium width, blue pink inner surface, strong reflexing of lateral lobes
LOWER LOBE: broader than long, very weak undulation of margin, very sparse dark purple trichomal elaiophores
COROLLA THROAT: one medium yellow spot
SPUR: purple, moderate curvature

Origin & Breeding History: 'Diasttralav' was developed by the breeder Har Stemkens, an employee of Syngenta Seeds B.V., in Enkhuizen, The Netherlands. The variety originated from a controlled cross made in August 2000, in Enkhuizen, between the female parent 'C0007-2' and the male parent 'C0017-3'. A single plant was selected from this cross in May 2001, based on criteria for earliness, flower colour and field performance. Asexual reproduction by vegetative cuttings was first conducted in June 2001.

Tests & Trials: The trials for 'Diasttralav' were conducted in a polyhouse during the spring of 2006 in St. Thomas, Ontario. The trial included a total of 15 plants of each variety. All plants were grown from rooted cuttings transplanted into 11 cm pots on March 31, 2006. Observations and measurements were taken from 10 plants of each variety on May 16, 2006. All colour measurements were made using the 2001 RHS colour chart.

Comparison tables for 'Diasttralav' with reference varieties 'Diastu' and 'Balwinlapi'

Main colour of corolla (RHS)

  'Diasttralav' 'Diastu' 'Balwinlapi'
inner side N74C more pink than 72D N74D

Colour of spur (RHS)

  'Diasttralav' 'Diastu' 'Balwinlapi'
main 70B 60D-71C 72D

Click on image for larger view
Diascia: 'Diasttralav' (left) with reference varieties 'Diastu' (centre) and 'Balwinlapi' (right)

Click on image for larger view
Diascia: 'Diasttralav' (left) with reference varieties 'Diastu' (centre) and 'Balwinlapi' (right)

Click on image for larger view
Diascia: 'Diasttralav' (left) with reference varieties 'Diastu' (centre) and 'Balwinlapi' (right)

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