HJ-8

Hibiscus

Denomination: 'HJ-8'
Botanical Name: Hibiscus rosa-sinensis
Applicant/Holder: Buffinga, Henry
R.R. #2
Seaforth, Ontario
N0K 1W0
Canada
Breeder: Henry Buffinga, Seaforth, Ontario
Application Date: 2004-07-05
Application Number: 04-4290
Grant of Rights Date: 2007-06-20
Certificate Number: 2807
Date rights revoked: 2011-10-31

Variety Description

Variety used for comparison: 'Rum Runner'

Summary: The leaf blade margin of 'HJ-8' has medium undulation and deep incisions while 'Rum Runner' has weak undulation and shallow incisions. 'HJ-8' has an obtuse leaf base whereas 'Rum Runner' has a cordate base. Flowers of 'HJ-8' are smaller, with shorter, narrower petals than 'Rum Runner'. When newly opened, the upper side of the petal is purple red for 'HJ-8' with an orange red to red margin whereas 'Rum Runner' has blue pink petals fading towards purple red at the base and dark purple red to red at the margin. Faded flowers of 'HJ-8' have purple red petals with an orange margin whereas 'Rum Runner' has light blue pink petals with a light yellow margin. 'HJ-8' has a smaller eye zone than 'Rum Runner'.

Description:

'HJ-8' has an upright branch attitude and medium branching density. The branches have very sparse pubescence and are greenish brown when new, turning to tan when older. The leaf blades are dark green on the upper side with no variegation. Pubescence on the leaf blades is very sparse. The outline of the leaf blade is cordate in shape, the base is obtuse, and the apex is acute with a blunt tip. The leaf blade margins have a medium amount of undulation with deep crenate incisions and no lobing.

The flowers of 'HJ-8' are single and in the red-purple colour group. The petals are spatulate in shape and moderately overlapping. The flowers have more than two colours and have a medium sized eye zone. The petal colours fade as the flower ages. The petal margins have absent or very weak serration and medium to strong undulation. The stigma is red in colour (RHS N30A) and the style is light red pink.

Origin & Breeding History: 'HJ-8' originated from a hand pollinated cross between 'Royal Orange' (female parent) and 'Rum Runner' (male parent), which took place at Seaforth, Ontario in November 2001. The parents were selected for leaf and flower colour, time to flowering and rootability.

Tests & Trials: The tests and trials for 'HJ-8' were conducted at Seaforth, Ontario in 2005. Vegetative cuttings of the candidate variety were stuck on November 3, 2004, rooted for six weeks, and transplanted into 6 inch pots on December 15, 2004. Plants were pinched at 6 weeks from transplant. Observations and measurements were taken from 10 plants of each variety on June 4, 2005. All colour measurements were determined using the 2001 RHS Colour Chart.


Comparison tables for 'HJ-8' with reference variety 'Rum Runner'

Flower diameter (cm)

  'HJ-8' 'Rum Runner'
mean 14.1 18.2
std. deviation 0.70 1.18

Petal length (cm)

  'HJ-8' 'Rum Runner'
mean 8.2 10.1
std. deviation 0.23 0.69

Petal width (cm)

  'HJ-8' 'Rum Runner'
mean 6.5 9.9
std. deviation 0.28 0.72

Colour of upper side of petal (RHS)

  'HJ-8' 'Rum Runner'
margin 41C to 44C 46A to 50A
middle 58C 63B fading to N57D at base
streak N/A 155A
transition to base N57B with 186D ring N/A
eye zone 45A 46A

Colour of upper side of faded petal (RHS)

  'HJ-8' 'Rum Runner'
margin 24C, 28D 12C
middle N57D 73C
transition to base N57D with 69C ring 69D
eye zone 46B 46A

Colour of style

  'HJ-8' 'Rum Runner'
RHS 49B 49B with 46A at base

Click on image for larger view
HJ-8
Hibiscus: 'HJ-8' (left) with reference variety 'Rum Runner' (right)

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