SYEP231

Euphorbia

Variety Description

Variety used for comparison: 'Inneuphdia' (Diamond Frost)

Summary: The plants of 'SYEP231' are shorter than those of 'Inneuphdia'. The plants of 'SYEP231' have dense floriferousness while those of 'Inneuphdia' have medium floriferousness. The stems of 'SYEP231' are medium green while those of 'Inneuphdia' are light green. The base and nodes of the stems of 'SYEP231' have anthocyanin colouration ranging from strong to very strong while those of 'Inneuphdia' have anthocyanin colouration ranging from medium to strong. The upper internodes of the stems of 'SYEP231' have anthocyanin colouration ranging from weak to medium while those of 'Inneuphdia' have anthocyanin colouration ranging from absent or very weak to weak. The upper side of the leaf blades of 'SYEP231' have absent or very sparse pubescence while those of 'Inneuphdia' have sparse pubescence. The lower side of the leaf blades of 'SYEP231' have sparse pubescence while those of 'Inneuphdia' have medium pubescence.

Description:

PLANT: vegetatively propagated, annual, upright bushy growth habit, dense branching, dense floriferousness
STEM: medium green, anthocyanin colouration at the base and nodes ranging from strong to very strong, anthocyanin colouration at the upper internodes ranging from weak to medium, absent or very weak glaucosity, weak pubescence, thin, smooth

LEAF: opposite arrangement, simple
LEAF BLADE: elliptic, acute apex, cuneate base, entire margin, absent or very sparse pubescence on upper side, sparse pubescence on lower side, absent glaucosity, medium green on upper side, light green on lower side
PETIOLE: present, length ranging from short to medium

BRACT: oblanceolate, white (RHS NN155C)

Origin & Breeding History: 'SYEP231' originated from a cross conducted in October 2007 between the female parent Chamaesyce hypericifolia designated '07-001', a proprietary seedling with white flowers, and the male parent variety 'Inneuphdia'. The new variety was developed by the breeder Dr. Kerry Bunker, as part of a controlled breeding program conducted in Queensland, Australia. The resultant seed from the cross was sown in a greenhouse in January 2008. In September 2008, a single plant from the progeny was selected by the breeder based on flower colour and plant habit.

Tests & Trials: Trials for 'SYEP231' were conducted in a polyhouse during the spring of 2011, in St. Thomas, Ontario. The trial included a total of 15 plants each of the candidate and reference variety. All plants were grown from rooted cuttings and transplanted into 15 cm pots on April 29, 2011. Observations and measurements were taken from 10 plants of each variety on June 6, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison table for 'SYEP231' with reference variety 'Inneuphdia'

Plant height (cm)

Click on image for larger view

Euphorbia: 'SYEP231' (left) with reference variety 'Inneuphdia' (right)

Click on image for larger view

Euphorbia: 'SYEP231' (left) with reference variety 'Inneuphdia' (right)

Click on image for larger view

Euphorbia: 'SYEP231' (left) with reference variety 'Inneuphdia' (right)