Tec Hewhitt


Denomination: 'Tec Hewhitt'
Trade name: Techno Heat White '10
Botanical Name: Lobelia erinus
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Eric Giesen, Syngenta Seeds B.V., Andijk, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2009-01-30
Application Number: 09-6490
Grant of Rights Date: 2011-05-31
Certificate Number: 4084
Date rights surrendered: 2015-05-31

Variety Description

Variety used for comparison: 'Lobtrawi' (Laguna White)

Summary: The plants of 'Tec Hewhitt' have longer internodes than 'Lobtrawi' and have thick stems while the plants of 'Lobtrawi' have thin to medium stems. The leaves of 'Tec Hewhitt' are longer and wider than the leaves of 'Lobtrawi'. The flowers of 'Tec Hewhitt' are larger than the flowers of 'Lobtrawi'. The flowers of 'Tec Hewhitt' have a longer pedicel than the flowers of 'Lobtrawi'.


PLANT: horizontal growth habit, medium degree of branching, sparse foliage density
STEM: thick, medium green, very weak anthocyanin colouration, very sparse pubescence

LEAF: alternate arrangement, simple, elliptic to obovate, obtuse apex, attenuate base, dentate margin, no variegation, upper side light to medium green, no pubescence on upper side

SEPAL: narrow lanceolate, no anthocyanin colouration

INFLORESCENCE: raceme, upright attitude, no anthocycanin on pedicel
UPPER COROLLA LOBE: cuspidate apex, oblanceolate shape, white (RHS NN155D), no markings present
LOWER COROLLA LOBE: white (RHS NN155D), no markings present
PALATE: very small, two light green (RHS N144A) spots at base.

Origin & Breeding History: The variety 'Tec Hewhitt' originated from a cross made in July 2006, in Andijk, The Netherlands. The female parent was a white flowered proprietary line designated LOB03-116-1 and the male parent was a white flowered proprietary line designated LOB02-21-1. The resultant seed was sown in a greenhouse in September 2006. In January 2007, a single plant from the progeny was selected by the breeder based on flower colour, plant habit and production characteristics.

Tests & Trials: Trials for 'Tec Hewhitt' were conducted in a polyhouse during the spring of 2010 in St. Thomas, Ontario. The trial included a total of fifteen plants of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 11 cm pots on May 6, 2010. Observations and measurements were taken from ten plants or parts of plants on May 27, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Tec Hewhitt' with reference variety 'Lobtrawi'

Internode length (cm)

  'Tec Hewhitt' 'Lobtrawi'
mean 2.8 2.1
std. deviation 0.26 0.09

Leaf length (cm)

  'Tec Hewhitt' 'Lobtrawi'
mean 5.7 2.7
std. deviation 0.35 0.27

Leaf width (cm)

  'Tec Hewhitt' 'Lobtrawi'
mean 2.3 1.2
std. deviation 0.22 0.16

Flower length (cm)

  'Tec Hewhitt' 'Lobtrawi'
mean 2.4 1.6
std. deviation 0.12 0.10

Flower width (cm)

  'Tec Hewhitt' 'Lobtrawi'
mean 2.4 1.7
std. deviation 0.07 0.14

Pedicel length (cm)

  'Tec Hewhitt' 'Lobtrawi'
mean 3.6 2.3
std. deviation 0.36 0.27

Click on image for larger view
Tec Hewhitt
Lobelia: 'Tec Hewhitt' (left) with reference variety 'Lobtrawi' (right)

Click on image for larger view
Tec Hewhitt
Lobelia: 'Tec Hewhitt' (left) with reference variety 'Lobtrawi' (right)

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