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Denomination: 'Agadeft'
Trade name: Patina Delft
Botanical Name: Ageratum houstonianum
Applicant/Holder: Syngenta Crop Protection AG
Schwarzwaldallee 215
Breeder: Monica Sanders, Syngenta Seeds B.V., Enkhuizen, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-317-7511
Application Date: 2006-11-30
Application Number: 07-6037
Grant of Rights Date: 2009-09-23
Certificate Number: 3606
Date rights surrendered: 2012-10-12

Variety Description

Variety used for comparison: 'Agetis' (Artist Alto Blue)

Summary: Anthocyanin colouration of the stems of 'Agadeft' is absent whereas it is moderate for those of 'Agetis'. 'Agadeft' has narrower leaves and shorter petioles than 'Agetis'. 'Agadeft' has fewer flowers per inflorescence than 'Agetis'. The colour of the unopened disc of 'Agadeft' is white while that of 'Agetis' is blue violet. The colour of the disc after dehiscence of 'Agadeft' is violet blue fading to light violet blue as it ages while that of 'Agetis' is blue violet changing to violet blue as it ages.


PLANT: annual type, bushy to upright growth habit, dense branching
STEM: light to medium green, no anthocyanin colouration, dense pubescence, medium to thick

LEAF: simple type
LEAF BLADE: ovate shape, apex ranging from acute to obtuse, cordate base, crenate margin, weak blistering, moderate pubescence on upper side, sparse to moderate pubescence on lower side, light to medium green on upper side, no variegation, petiole present

INFLORESCENCE: average of 9.0 flowers per inflorescence
PEDICEL: no anthocyanin colouration
DISC FLORETS: violet blue fading to light violet blue as they age

Origin & Breeding History: 'Agadeft' was bred and developed by the breeder, M. Sanders, an employee of Syngenta Seeds B.V., Enkhuizen, The Netherlands. It originated from a controlled pollination made in October 2002 between the female parent designated 'W0052-7' and the male parent designated 'X0012-3'. 'Agadeft' was selected as a single seedling in August 2003 based on its compact plant habit, branching, flower size and flower colour.

Tests & Trials: Trials for 'Agadeft' were conducted in a polyhouse during the spring of 2008 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 15 plants per variety. Rooted cuttings were transplanted into 15 cm pots on April 13, 2008. Measured characteristics were based on measurements taken from 10 plants or parts of plants on June 11, 2008. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Agadeft' with reference variety 'Agetis'

Leaf blade width (cm)

  'Agadeft' 'Agetis'
mean 3.9 5.0
std. deviation 0.33 0.59

Petiole length (mm)

  'Agadeft' 'Agetis'
mean 0.6 1.4
std. deviation 0.28 0.31

Number of flowers per inflorescence

  'Agadeft' 'Agetis'
mean 9.0 14.8
std. deviation 1.87 2.17

Colour of disc (RHS)

  'Agadeft' 'Agetis'
disc (capitulum) before florets open lighter than 155C 83C
opened floret disc 94C N88C
aged floret disc bluer than 93D 92A

Click on image for larger view
Ageratum: 'Agadeft' (left) with reference variety 'Agetis' (right)

Click on image for larger view
Ageratum: 'Agadeft' (left) with reference variety 'Agetis' (right)

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