NCDX2

Deutzia

Denomination: 'NCDX2'
Trade name: Yuki Cherry Blossom
Botanical Name: Deutzia
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: 2013-08-19
Application Number: 13-8097
Grant of Rights Date: 2015-06-30
Certificate Number: 5079
Grant of Rights Termination Date: 2035-06-30

Variety Description

Varieties used for comparison: 'Nikko' and 'Pink Minor'

Summary: The plants of 'NCDX2' are upright to bushy rounded and shorter than those of 'Pink Minor' which are upright to spreading. The flowering stem of 'NCDX2' is longer than that of 'Nikko' and shorter than that of 'Pink Minor'. The middle of the stem of 'NCDX2' is medium thickness while that of 'Nikko' is thin and that of 'Pink Minor' is thick. In the spring, the leaf of 'NCDX2' is larger than that of 'Nikko'. In the summer, the leaf of 'NCDX2' is smaller than that of 'Pink Minor'. The inflorescence of 'NCDX2' is larger in diameter than that of 'Nikko' while it is smaller in diameter than that of 'Pink Minor'. The inflorescence of 'NCDX2' is shorter than that of 'Pink Minor'. The flower bud of 'NCDX2' is purple while it is white for 'Nikko'. The sepals of the calyx of 'NCDX2' are purple while they are whitish-green for 'Nikko'. The flower of 'NCDX2' has a slightly larger diameter than that of 'Nikko' while it has a smaller diameter than that of 'Pink Minor'. The undulation of the margin of the petal of 'NCDX2' is weak while 'Nikko' has none and 'Pink Minor' has a medium degree of undulation of the margin. The petal of 'NCDX2' is longer than that of 'Nikko' and smaller than that of 'Pink Minor'. The inner side of the petal of 'NCDX2' is white with a light blue violet overlay while it is white throughout for 'Nikko'. The outer side of the petal of 'NCDX2' is purple with white at the margins while that of 'Nikko' is white throughout. The plants of 'NCDX2' begin flowering early in the season while those of 'Nikko' flower very early.

Description:

PLANT: deciduous, upright to bushy rounded, medium degree of branching (dense in summer), medium density of foliage (dense in summer)
STEM: medium thickness, absent or very weak anthocyanin colouration, smooth, red-brown

LEAF: opposite arrangement, simple type, ovate, acuminate apex, cuneate base, serrate margin, weak glossiness of upper side, absent or very sparse pubescence on upper and lower side, weak fragrance, dark green on upper side, medium green on lower side, no variegation, petiole present
NEWLY OPENED LEAF: light green to medium green

INFLORESCENCE: panicle, weak fragrance, rotate (star like)
FLOWER BUD: ovate, purple (closest to RHS 70B)
CALYX: medium green, sepals are light green, medium to strong anthocyanin colouration on sepals
PETAL: five, elliptic, acute apex, entire margin, weak undulation of margin, reflexing of margin is flat and reflexing, inner side is white (NN155D) with a light blue violet (RHS 69D) overlay, outer side is purple (lighter than RHS 70B) with white (RHS NN155D) at margins
POLLEN: yellow
FLOWERING PERIOD: early in the season

Origin & Breeding History: 'NCDX2' originated from a cross conducted between Deutzia gracilis variety 'Nikko' as the female parent and Deutzia x rosea variety 'Carminea' as the male parent in spring of 2009 in Mills River, North Carolina, USA. 'NCDX2' was bred and developed by the breeder, Thomas Green Ranney, an employee of North Carolina State University in Raleigh, North Carolina, USA. In the spring of 2010, this variety was selected based on its compact, low mounding growth habit, pink flower colour on outer side of petals and prolific flowering.

Tests & Trials: The comparative trial for 'NCDX2' was conducted in an indoor container trial during the spring of 2014 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 15 shrubs each of the candidate and reference varieties. All shrubs were grown from liners and planted into 8.8 litre containers on July 11, 2013. In 2013, plants were grown outdoors in an irrigated area and transferred to a polyhouse in November 2013. Observations and measurements were taken from 10 plants of the candidate variety 'NCDX2' and reference variety 'Pink Minor' on April 24, 2014 and 10 plants of the reference variety 'Nikko' on April 14, 2014. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'NCDX2' with reference varieties 'Nikko' and 'Pink Minor'

Plant height (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 34.2 33.5 57.9
std. deviation 4.62 3.19 4.74

Length of flowering stem (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 53.7 39.3 79.1
std. deviation 8.08 9.42 11.36

Leaf length including petiole, in spring (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 5.1 4.0 5.3
std. deviation 0.37 0.52 0.56

Leaf length including petiole, in summer (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 5.5 5.6 7.4
std. deviation 0.36 0.61 0.51

Leaf width, in spring (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 1.9 1.2 2.0
std. deviation 0.23 0.18 0.28

Leaf width, in summer (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 2.0 1.8 2.8
std. deviation 0.19 0.16 0.21

Inflorescence diameter (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 4.2 3.0 5.4
std. deviation 0.82 0.42 0.56

Inflorescence length (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 4.9 5.3 6.7
std. deviation 0.98 0.60 1.20

Flower diameter (cm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 1.5 1.2 2.1
std. deviation 0.17 0.10 0.27

Colour of flower (RHS)

  'NCDX2' 'Nikko' 'Pink Minor'
bud closest to 70B NN155C closest to 70B
inner side NN155D with 69D overlay NN155D NN155D with 69D overlay and lighter than 70B at apex
outer side lighter than 70B with NN155D at margins NN155C lighter than 70B with NN155D at margins

Petal length (mm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 10.8 10.9 13.3
std. deviation 0.67 0.60 0.71

Petal width (mm)

  'NCDX2' 'Nikko' 'Pink Minor'
mean 5.3 4.6 8.6
std. deviation 0.50 0.53 0.73

Click on image for larger view
NCDX2
Deutzia: 'NCDX2' (left) with reference varieties 'Nikko' (centre) and 'Pink Minor' (right)

Click on image for larger view
NCDX2
Deutzia: 'NCDX2' (left) with reference varieties 'Nikko' (centre) and 'Pink Minor' (right)

Click on image for larger view
NCDX2
Deutzia: 'NCDX2' (left) with reference varieties 'Nikko' (centre) and 'Pink Minor' (right)

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