Agrihydravijf

Hydrangea

Denomination: 'Agrihydravijf'
Previously Proposed Denomination: 'Hycapins'
Trade name: Pink Sensation
Botanical Name: Hydrangea macrophylla
Applicant/Holder: Hydrangea Breeders Association B.V.
Achterweg 58a
1424 PR
De Kwakel
Netherlands
Breeder: Niels Arts, Aalsmeer, Netherlands
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2011-10-14
Application Number: 11-7398

Variety Description

Variety used for comparison: 'Early Blue'

Summary: The leaf blade of 'Agrihydravijf' is smaller than the leaf blade of 'Early Blue'. The calyx of the sterile flower of 'Agrihydravijf' is smaller in diameter than the calyx of the sterile flower of 'Early Blue'. The sepal of the sterile flower of 'Agrihydravijf' is smaller than the sepal of the sterile flower of 'Early Blue'. When newly open, the inner side of the sepal of the sterile flower of 'Agrihydravijf' is light yellow whereas the inner side of the sepal of the sterile flower of 'Early Blue' is purple red with light green towards the base. When fully open, the inner side of the sepal of the sterile flower of 'Agrihydravijf' is white with light yellow and light blue pink tones whereas the inner side of the sepal of the sterile flower of 'Early Blue' is purple red with yellow to yellow green at the base. When aged, the inner side of the sepal of the sterile flower of 'Agrihydravijf' is light blue pink with white tones whereas the inner side of the sepal of the sterile flower of 'Early Blue' is purple red.

Description:

PLANT: non-climbing type, upright growth habit
STEM: no fasciation, green, absent or very few lenticels in autumn, black lenticels

LEAF BLADE: no lobing, elliptic shape, medium length of tip, obtuse to rounded base, small to medium depth of incisions of margin, no variegation, medium to dark green upper side, medium degree of glossiness of upper side, weak blistering

FLOWERING: begins very early
INFLORESCENCE: globular shape, inconspicuous or slightly conspicuous fertile flowers
STERILE FLOWER: single type, strong degree of overlapping of sepals, incisions of margin present on all sepals
SEPAL OF STERILE FLOWER (INNER SIDE): light yellow (RHS 8C-D) when newly open, white (RHS NN155A) with light yellow (RHS 8C-D) and light blue pink (RHS 65B-C) tones when fully open, light blue pink (RHS 65C-D) with white (RHS NN155B) tones when aged, no secondary colour
PETAL OF FERTILE FLOWER: inner side is light green

Origin & Breeding History: 'Agrihydravijf' was bred and developed by the breeder, Niels Arts, in Aalsmeer, Netherlands. It originated from a cross conducted on May 15, 2007, in De Kwakel, Netherlands, between the female parent designated '200271-03', and the male parent designated '200135-01'. From the resulting progeny, 'Agrihydravijf' was selected on April 25, 2009, in Glandorf, Germany, for its inflorescence colour, and branching habit. 'Agrihydravijf' was first asexually propagated by cuttings on April 20, 2010, in Glandorf, Germany.

Tests & Trials: The comparative trial for 'Agrihydravijf' was conducted in a polyhouse during the spring of 2016, at BioFlora Inc., in St. Thomas, Ontario. The trial included 8 shrubs each of the candidate and reference variety. All shrubs were grown from pre-finished plants obtained from cuttings that were rooted in 2015, and planted in 10 cm pots. The observations and measurements were taken from 8 plants or 10 parts of 8 plants of each variety on June 6, 2016. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'Agrihydravijf' with reference variety 'Early Blue'

Leaf blade length (cm)

  'Agrihydravijf' 'Early Blue'
mean 7.1 9.1
std. deviation 0.40 0.64

Leaf blade width (cm)

  'Agrihydravijf' 'Early Blue'
mean 5.1 7.0
std. deviation 0.16 0.70

Diameter of calyx of sterile flower (cm)

  'Agrihydravijf' 'Early Blue'
mean 4.2 5.8
std. deviation 0.30 0.44

Length of sepal of sterile flower (cm)

  'Agrihydravijf' 'Early Blue'
mean 2.0 3.2
std. deviation 0.13 0.20

Width of sepal of sterile flower (cm)

  'Agrihydravijf' 'Early Blue'
mean 2.6 3.9
std. deviation 0.12 0.21

Colour of inner side of sepal of sterile flower (RHS)

  'Agrihydravijf' 'Early Blue'
newly open 8C-D 55A-B with N144D towards base
fully open NN155A with 8C-D tones and 65B-C tones 55A with 4B-C at base
aged 65C-D with NN155B tones 55A-B

Click on image for larger view
Agrihydravijf
Hydrangea: 'Agrihydravijf' (left) with reference variety 'Early Blue' (right)

Click on image for larger view
Agrihydravijf
Hydrangea: 'Agrihydravijf' (left) with reference variety 'Early Blue' (right)

Click on image for larger view
Agrihydravijf
Hydrangea: 'Agrihydravijf' (left) with reference variety 'Early Blue' (right)

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