Lablusa

Lavender

Denomination: 'Lablusa'
Botanical Name: Lavandula angustifolia
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Basel
4058
Switzerland
Breeder: M. Gutter, Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2006-10-13
Application Number: 07-6019
Grant of Rights Date: 2009-09-23
Certificate Number: 3622
Date rights surrendered: 2011-09-22

Variety Description

Variety used for comparison: 'Munstead'

Summary: 'Lablusa' has a shorter plant height than 'Munstead'. 'Lablusa' has weaker green colour of the foliage and a lighter green stem than 'Munstead'. 'Lablusa' has a shorter spike length than 'Munstead'. 'Lablusa' has a denser spike than 'Munstead'. 'Lablusa' flowers earlier than 'Munstead'.

Description:

PLANT: bushy to rounded, erect outer flowering stems, dense
FOLIAGE: weak intensity of green, strong intensity of grey

LEAF: grey green upper side, no margin incisions

FLOWERING: mid-season
FLOWERING STEM: thin, light green, dense pubescence, lateral branching present above foliage
SPIKE: dense whorls, cylindrical, medium number of flowers, no infertile bracts
CALYX: bluish violet with green at base, dense pubescence
COROLLA: light blue violet with darker blue violet at margin

Origin & Breeding History: 'Lablusa' originated through inbred breeding of the Lavandula angustifolia variety 'Hidcote Blue'. The breeder conducted 3 cycles of half-sib selections of this variety during the period from August 1998 through to July 2000, in Enkhuizen, The Netherlands. The seeds from the selection were sown in January 2001 and a single seedling was selected in July 2001. The selection criteria included compact plant habit, good branching characteristics and early flowering. Asexual reproduction by cuttings was first conducted in August 2001, in Enkhuizen, The Netherlands.

Tests & Trials: Trials for 'Lablusa' were conducted in a polyhouse during the summer of 2008 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 15 plants per variety. All plants were grown from rooted cuttings and transplanted into 1 gallon containers on April 16, 2008. Observations and measurements were taken from 10 plants of each variety at full flowering. Plants of the variety 'Lablusa' were observed on July 25, 2008 and plants of the variety 'Munstead' were observed on August 25, 2008. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Lablusa' with reference variety 'Munstead'

Plant height (cm)

  'Lablusa' 'Munstead'
mean 31.6 41.0
std. deviation 2.60 2.31

Spike length (cm)

  'Lablusa' 'Munstead'
mean 5.1 6.5
std. deviation 0.62 1.05

Colour of calyx (RHS)

  'Lablusa' 'Munstead'
main 86A-B 145C

Colour of corolla (RHS)

  'Lablusa' 'Munstead'
main 85B with N88C margin N87C-D

Click on image for larger view
Lablusa
Lavender: 'Lablusa' (left) with reference variety 'Munstead' (right)

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