NCHA1

Hydrangea

Denomination: 'NCHA1'
Previously Proposed Denomination: 'NCSUHA1'
Trade name: Invincibelle Spirit
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: 2008-11-28
Application Number: 08-6471
Grant of Rights Date: 2011-08-19
Certificate Number: 4159
Grant of Rights Termination Date: 2029-08-19

Variety Description

Variety used for comparison: 'Annabelle'

Summary: The leaves of 'NCHA1' are smaller and have shorter petioles than those of 'Annabelle'. The calyx of 'NCHA1' are smaller than those of 'Annabelle'. The sepals of the sterile flowers of 'NCHA1' differ in colour from those of 'Annabelle'.

Description:

PLANT: non-climbing type, upright growth habit
STEM: no fasciation, green and brownish

LEAF BLADE: no lobing, elliptic, short tip, obtuse base, shallow incisions, medium green, moderate glossiness on upper side, weak blistering

INFLORESCENCE: globular, fertile flowers inconspicuous or slightly conspicuous, mid-season flowering
STERILE FLOWER: single type, absent or very weak overlapping of sepals, margin incisions absent on all sepals, brown purple (RHS 186B) buds, white to violet (RHS 155B-75D) with brown purple (RHS 185D) veins when fully opened, brown purple to blue pink (RHS 186B-C) with brown purple (RHS 185B) veins when aged
FERTILE FLOWER: pink petals

Origin & Breeding History: 'NCHA1' originated from an open pollinated cross conducted in an isolation block in June 2005 between the female parent seedling 'H2005-045-061' and pollen from a group of sibling plants. The new variety was bred and developed by the breeder Thomas R. Ranney, an employee at North Carolina State University, Mountain Horticultural Crops Research Station, Mills River, North Carolina, United States. 'NCHA1' was selected as a seedling from the resultant progeny in June 2006 based on sepal colour, plant growth habit, branching characteristics and prevelance of sterile flowers in the inflorescence. The first asexual propagation of 'NCHA1' was carried out in June 2006 by stem cuttings at the N.C.S.U., Mountain Horticultural Crops Research Station, Mills River, North Carolina, United States.

Tests & Trials: Trials for 'NCHA1' were conducted in an outdoor irrigated container trial during the summer of 2010, in St. Thomas, Ontario. The trial included a total of 15 shrubs each of the candidate and reference varieties. All shrubs were grown from 'quick turn' potted liners, transplanted into 7.5 liter containers in the spring of 2009. Trials were arranged in rows with 1 m spacing between plants. Due to warm spring temperatures, the trial plants were cut back in May 2010. As a result flower characteristics are smaller in size than typically observed. Observations and measurements were taken from 10 plants of each variety on July 19, 2010. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


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

Leaf blade length (cm)

  'NCHA1' 'Annabelle'
mean 10.7 14.3
std. deviation 0.86 1.54

Leaf blade width (cm)

  'NCHA1' 'Annabelle'
mean 7.2 11.8
std. deviation 0.57 0.95

Petiole length (cm)

  'NCHA1' 'Annabelle'
mean 4.2 7.1
std. deviation 0.74 1.25

Calyx diameter (mm)

  'NCHA1' 'Annabelle'
mean 11.1 15.2
std. deviation 1.29 1.99

Colour of sterile flower sepals (RHS)

  'NCHA1' 'Annabelle'
fully opened 155B to 75D with 185D veins NN155A

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

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

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

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