OSTZ0002

Osteospermum

Variety Description

Varieties used for comparison: 'Tra Terra' (Tradewinds Terracotta '10) and 'Sunny Dark Amanda'

Summary: 'OSTZ0002' has a narrower leaf than 'Sunny Dark Amanda'. 'OSTZ0002' begins flowering earlier and has fewer ray florets per flower head than 'Sunny Dark Amanda'. The shape of the apex of the ray floret is acute for 'OSTZ0002' while it is obtuse for 'Tra Terra'. The number of colours on the upper side of the ray floret is two for 'OSTZ0002' while it is one for 'Tra Terra'. The main colour on the upper side of the ray floret is yellow for 'OSTZ0002' while it is orange brown and yellow brown with diffuse, dark pink red stripes throughout for 'Tra Terra' and light yellow for 'Sunny Dark Amanda'. The secondary colour on the upper side of the ray florets is yellow brown streaked with darker yellow brown and brown at the tip for 'OSTZ0002' while it is absent for 'Tra Terra' and yellow brown for 'Sunny Dark Amanda'.

Description:

PLANT: attitude of shoots is erect, begins flowering early

LEAF: medium to deep indentations of margin, no variegation, medium green on upper side

YOUNG FLOWER HEAD: upper side of ray floret is yellow brown (RHS 167A-B) streaked with yellow brown (RHS N172D) on apical third and yellow (RHS 9B) towards base
FLOWER HEAD: no paracorolla, daisy type
RAY FLORET: acute apex, inward rolling of longitudinal margins is absent on all flowers, basal zone is yellow (closest to RHS 8A), two colours on upper side, main colour on upper side is yellow (closest to RHS 8A), secondary colour on upper side is yellow brown (RHS 163C) streaked with darker yellow brown (RHS 167C) and brown (RHS 175A) at tip, secondary colour on upper side is located at apex for one third of ray floret, colour group of middle zone of lower side is yellow with red (brown) stripe
DISC: black

Origin & Breeding History: 'OSTZ0002' was bred and developed by the breeder, Theodore C.M. van Kleinwee, in Enkhuizen, Netherlands, as part of a controlled breeding program. It originated from an open pollinated cross between a proprietary line with bronze flower colour designated '60145' as the female parent, and an unknown male parent. The cross was conducted in June 2006. The resultant seed was collected and sown in a greenhouse in Enkhuizen in March 2007. In August 2007, a single plant was selected using flower colour, plant growth habit and production characteristics as the selection criteria. This plant was named 'OSTZ0002'.

Tests & Trials: Trials for 'OSTZ0002' were conducted in a polyhouse during the spring of 2012 at BioFlora Inc. in St. Thomas, Ontario. The trials included a total of 20 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 11.5 cm pots on April 23, 2012. Observations and measurements were taken from 10 plants of each variety on June 13, 2012. All colour determinations were made using the 2007 Royal Horticulture Society (RHS) Colour Charts.

Comparison tables for 'OSTZ0002' with reference varieties 'Tra Terra' and 'Sunny Dark Amanda'

Leaf width (cm)

Number of ray florets per flower head

Colour on upper side of ray floret (RHS)

Click on image for larger view

Osteospermum: 'OSTZ0002' (left) with 'Tra Terra' (centre) and 'Sunny Dark Amanda' (right)

Click on image for larger view

Osteospermum: 'OSTZ0002' (left) with 'Tra Terra' (centre) and 'Sunny Dark Amanda' (right)

Click on image for larger view

Osteospermum: 'OSTZ0002' (left) with 'Tra Terra' (centre) and 'Sunny Dark Amanda' (right)