Jefreb

Dogwood

Denomination: 'Jefreb'
Trade name: Little Rebel
Botanical Name: Cornus alba
Applicant/Holder: Jeffries Nurseries Ltd.
Box 402
Portage La Prairie, Manitoba
R1N 3B7
Canada
Breeder: W. G. Ronald, Jeffries Nurseries Ltd., Portage La Prairie, Manitoba
Application Date: 2012-12-19
Application Number: 12-7818
Grant of Rights Date: 2014-08-19
Certificate Number: 4851
Grant of Rights Termination Date: 2032-08-19

Variety Description

Variety used for comparison: 'Bailhalo' (Ivory Halo)

Summary: The growth habit of 'Jefreb' is broader than it is tall whereas 'Bailhalo' is almost as broad as it is tall. The plants of 'Jefreb' have thin stems with dense branching whereas the plants of 'Bailhalo' have medium thick stems with medium density of branching. The foliage of 'Jefreb' is not variegated whereas it is variegated on 'Bailhalo'.

Description:

PLANT: oblate shaped shrub, bushy growth habit, medium height, dense branching, fast growth rate

STEM: medium green, thin, absent or very sparse pubescence, angular in cross section, smooth bark, medium glaucosity, medium number of lenticels

BUD: small, brown, conical shape, pointed apex, small bud scale
PETIOLE: strong intensity of anthocyanin colouration
LEAF: simple leaf type, opposite in arrangement
LEAF BLADE: lanceolate, acuminate apex, obtuse base, entire margin, lobing absent, no pubescence on upper surface, dark green on upper side (RHS 137A), variegation absent
LOWER SIDE OF LEAF BLADE: brown green (RHS 137C), absent or very weak intensity of anthocyanin colouration of the veins, no pubescence

FLOWER: none

Origin & Breeding History: 'Jefreb' originated as a sport of the variety, 'Bailhalo', discovered by the breeders at Jeffries Nurseries, Portage la Prairie, Manitoba in the summer of 2005. It was selected for its foliage colour, compact growth habit and winter stem colour. Asexual reproduction of the new variety was first conducted by stem cutting at the Glenlea Greenhouse near Winnipeg, Manitoba in the summer of 2006.

Tests & Trials: 'Jefreb' was tested outdoors at Jeffries Nurseries Limited, Portage La Prairie, Manitoba during the summer of 2013. The plants were started as rooted cuttings in June 2009, grown in 4.5 litre pots and transplanted into 9 litre black plastic containers in May 2010. In May 2011, plants of 'Jefreb' and 'Bailhalo' were planted in 45 and 31.5 litre pots respectively. The trials consisted of 10 plants of each variety. Measured characteristics were based on a minimum of 10 measurements. All colour determinations were made using the 2001 Royal Horticultural Sociaty (RHS) colour chart.


Comparison tables for 'Jefreb' with reference variety 'Bailhalo'

Plant height (cm)

  'Jefreb' 'Bailhalo'
mean 59.9 85.0
std. deviation 2.97 2.99

Plant width (cm)

  'Jefreb' 'Bailhalo'
mean 107.19 87.63
std. deviation 3.34 2.14

Leaf blade length (cm)

  'Jefreb' 'Bailhalo'
mean 10.76 9.04
std. deviation 0.80 0.57

Leaf blade width (cm)

  'Jefreb' 'Bailhalo'
mean 4.96 3.95
std. deviation 0.53 0.35

Click on image for larger view
Jefreb
Dogwood: 'Jefreb' (left) with reference variety 'Bailhalo' (right)

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