Plants – Herbaceous ornamnental flowering plant – Osteospermum
Plant Patent
2000-09-08
2002-07-23
Campell, Bruce R. (Department: 1661)
Plants
Herbaceous ornamnental flowering plant
Osteospermum
Plant Patent
active
PP012796
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a new and distinct variety of the Compositae family. The new variety, a member of the species
Osteospermum fruticosum
(L.) Norl., named ‘Kakegawa AU1’. This species is one of several species of Osteospermum that are commonly referred to as Cape Daisy.
The new variety originated as a first generation hybrid seedling from a controlled hybridization. This hybridization was done in 1991, at the Sakata Seed Corporation, Chogo Research Station in Chogo Prefecture, Japan. The objective of this breeding program was to develop plants with suitable form for pot culture that also possessed large flowers that would stay open into the evening hours. The flowers of
Osteospermum fruticosum
(L.) Norl. usually close under low light conditions, such as in the evening.
The original parent lines for the new variety were
Osteospermum fruticosum
(L.) Norl. breeding lines 474 and 247, female and male respectively. From this hybridization one hundred first generation seedlings were obtained and grown to mature, flowering plants. Five of these new plant lines were selected in 1992 for asexual reproduction and further evaluation. Each of these varieties possessed white or off white colored flower petals and flowers that remained open into the evening. In 1993, three of these lines were selected and evaluated due to their compact, funnel shaped plant habit and profuse branching and flowering. In 1995, one line was selected as ‘Kakegawa AU1’. Further evaluation by the inventor during 1996 and 1997 demonstrated that the new variety's characteristics were firmly fixed and stable. Since this time the new variety has been trialed and vegetatively propagated at the assignee's facilities in Salinas, Calif. The new variety has been stable and fixed in this environment also.
The new variety has been observed under greenhouse and outdoor conditions in California and Japan. The phenotype of the new plant may vary somewhat with variations in temperature, day length, light intensity or soil media conditions. The observations noted below have been made using multiple 8 month old plants grown in Salinas, Calif. under the following conditions. Shoot tips were rooted in soil plug trays in August. After developing a root ball the plants were transplanted into six-inch diameter pots and grown outdoors through the winter to provide vernalization for flowering. In December, buds were pinched off to promote branching. Winter night temperatures averaged 40 to 50 degrees Fahrenheit. By May of the following year the plants were in full bloom. Average summer daytime temperatures in Salinas range from 60 to 75 degrees Fahrenheit depending on the month and the amount of coastal marine layer cloud cover.
Campell Bruce R.
Para Annette
Rothwell Figg Ernst & Manbeck
Sakata Seed Corporation
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