NCHA2

Hydrangea

Denomination: 'NCHA2'
Trade name: Invincibelle Spirit II
Botanical Name: Hydrangea arborescens
Applicant/Holder: North Carolina State University
Office of Technology Transfer
1021 Main Campus Drive
Raleigh, North Carolina
27606
United States of America
Breeder: Thomas Green Ranney, North Carolina State University, Arden, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Canada
Tel: 519-631-6241
Application Date: 2014-08-08
Application Number: 14-8427

Variety Description

Variety used for comparison: 'NCHA1' (Invincibelle Spirit)

Summary: The leaf blade of 'NCHA2' is broader than the leaf blade of 'NCHA1'. The inflorescence of 'NCHA2' is taller and larger in diameter than the inflorescence of 'NCHA1'. The sepal of the sterile flower of 'NCHA2' is broader than the sepal of the sterile flower of 'NCHA1'. When fully open, the inner side of the sepal of the sterile flower of 'NCHA2' is white with blue pink tones whereas the sepal of the sterile flower of 'NCHA1' is white with lighter pink tones.

Description:

PLANT: non-climbing type, upright to semi-upright growth habit
STEM: no fasciation, brownish, moderate strength

LEAF BLADE: no lobing, ovate shape, medium to long tip, cordate base, medium depth of incisions of margin, no variegation, dark green upper side, medium degree of glossiness of upper side, medium degree of blistering

FLOWERING: begins mid-season
INFLORESCENCE: globular shape, inconspicuous or slightly conspicuous fertile flowers
STERILE FLOWER BUD: brown purple (RHS 187A)
STERILE FLOWER: single type, absent to weak degree of overlapping of sepals, incisions of margin absent on all sepals
SEPAL OF STERILE FLOWER (INNER SIDE): white (RHS 155A) with brown purple (RHS 184B-C) tones when newly open, white (RHS NN155B) with blue pink (RHS 63B-C) tones when fully open, white (RHS 155A) or yellow green (close to RHS 150D -154D) when aged, no secondary colour
SEPAL OF STERILE FLOWER (OUTER SIDE): light blue pink (RHS 69B) to white with blue pink (RHS 63B-C) and purple (RHS 64B) overcolour along margins
PETAL OF FERTILE FLOWER: inner side is white with pink tones

Origin & Breeding History: 'NCHA2' was bred and developed by the breeder, Thomas Green Ranney, an employee of North Carolina State University, in Raleigh, North Carolina, USA. It originated from a controlled cross conducted in June 2010 at the Mountain Horticultural Crops Research Station, in Mills River, North Carolina, between the variety 'H2009-067-039', as the female parent, and the variety 'H2008-143-001', as the male parent. From the resulting progeny, 'NCHA2' was selected in 2011 for its compact plant growth habit, stiff branches, and inflorescence colour. 'NCHA2' was first propagated asexually by stem cuttings in June 2012 at the Mountain Horticultural Crops Research Station, in Mills River, North Carolina.

Tests & Trials: The comparative trial for 'NCHA2' was conducted in an outdoor container trial during the spring and summer of 2016, at BioFlora Inc., in St. Thomas, Ontario. The trial included 12 shrubs each of the candidate and reference variety. All shrubs were grown from rooted cuttings and transplanted into 14 litre containers on July 15, 2015. The plants were overwintered in a cold double polyhouse without heat. The observations and measurements were taken from 10 plants or parts of plants of each variety on June 21, 2016. All colour
determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'NCHA2' with reference variety 'NCHA1'

Leaf blade width (cm)

  'NCHA2' 'NCHA1'
mean 12.3 9.7
std. deviation 0.96 0.44

Inflorescence height (cm)

  'NCHA2' 'NCHA1'
mean 12.7 8.6
std. deviation 1.34 1.53

Inflorescence diameter (cm)

  'NCHA2' 'NCHA1'
mean 23.9 17.1
std. deviation 1.45 1.07

Width of sepal of sterile flower (cm)

  'NCHA2' 'NCHA1'
mean 0.8 0.5
std. deviation 0.07 0.10

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

  'NCHA2' 'NCHA1'
fully open NN155B with 63B-C tones NN155B with light pink tones

Click on image for larger view
NCHA2
Hydrangea: 'NCHA2' (left) with reference variety 'NCHA1' (right)

Click on image for larger view
NCHA2
Hydrangea: 'NCHA2' (left) with reference variety 'NCHA1' (right)

Click on image for larger view
NCHA2
Hydrangea: 'NCHA2' (left) with reference variety 'NCHA1' (right)

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