Tra Yelbic

Osteospermum

Variety Description

Variety used for comparison: 'Osyel' (Jamboana Primrose)

Summary: 'Tra Yelbic' differs from the reference variety, 'Osyel', mainly in shoot anthocyanin colouration, depth of incisions of the margins, peduncle length, ray floret length and width, ray floret colour and disc colour before dehiscence. 'Tra Yelbic' has very weak anthocyanin colouration of the shoots whereas it is medium with strong streaks on 'Osyel'. The incisions of the margins of 'Tra Yelbic' are shallow to medium in depth whereas they are deep on 'Osyel'. The peduncle of 'Tra Yelbic' is medium in length whereas it is long in 'Osyel'. The ray florets of 'Tra Yelbic' are short to medium in length and medium to wide whereas they are medium to long and medium in width in 'Osyel'. The upper side of the ray florets of 'Tra Yelbic' are yellow at the apex, fading to light yellow toward the base with white near the base developing blue pink streaks turning to a darker shade of blue pink as they age. The upper side of the ray florets of 'Osyel' are mainly white, with yellow along the margin at apex. The lower side of the ray florets of 'Tra Yelbic' are yellow with red-brown stripes in the centre whereas they are yellow with light streaks of red-brown in the centre and apex. Before dehiscence, the disc of 'Tra Yelbic' is grey-green whereas it is yellow in 'Osyel'.

Description:

PLANT: erect shoots with very weak anthocyanin, medium in height

LEAF: medium in length and width, obovate in shape, shallow to medium depth incisions of margins, no variegation, medium green on the upper side

FLOWER: medium length peduncle, one or two complete ray floret whorls, medium to wide inflorescence diameter
RAY FLORET: short to medium length, medium to wide, oblanceolate in shape, with a rounded - dentate apex, no reflexing, inward rolling of longitudinal margins absent, horizontal attitude to upwards with age, two colours on ray florets, yellow at the apex, fading towards the base to light yellow with white near the base, developing blue pink streaks turning to a darker blue pink as it ages on the upper side, yellow with red-brown stripes in the centre on the lower side
DISC: grey-green before dehiscence

Origin & Breeding History: 'Tra Yelbic' originated from the cross using a proprietary seedling, 'OZ-185-1', as the female parent, with another proprietary seedling, 'OY-81-2', as the male parent, conducted in June 1999 in Andijk, the Netherlands. The resultant seed was sown in the greenhouse in August 2003. In January 2004, a single plant from the progeny was selected for flower qualtiy and colour, and compact growth habit.

Tests & Trials: The trials for 'Tra Yelbic' were conducted in a polyhouse at BioFlora in St. Thomas, Ontario, during the spring of 2007. The trials included 15 plants of each variety grown from rooted cuttings and transplanted into 11 cm pots. Observations and measurements were taken from 10 plants of each variety. All colour characteristics were determined using the 2001 Royal Horticultural Society (RHS) colour chart.

Comparison tables for 'Tra Yelbic' with reference variety 'Osyel'

Peduncle length (cm)

Ray floret length (cm)

Ray floret width (cm)

Colour of ray floret (RHS)

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Osteospermum: 'Tra Yelbic' (left) with reference variety 'Osyel' (right)

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Osteospermum: 'Tra Yelbic' (left) with reference variety 'Osyel' (right)

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Osteospermum: 'Tra Yelbic' (left) with reference variety 'Osyel' (right)