Plants – Herbaceous ornamnental flowering plant – Euphorbia
Plant Patent
2002-03-04
2003-06-24
Campell, Bruce R. (Department: 1661)
Plants
Herbaceous ornamnental flowering plant
Euphorbia
Plant Patent
active
PP013904
ABSTRACT:
BOTANICAL CLASSIFICATION/CULTIVAR DESIGNATION
Euphorbia pulcherrima
Willd. cultivar Winrose.
BACKGROUND OF THE INVENTION
The present Invention relates to a new and distinct cultivar of Poinsettia plant, botanically known as
Euphorbia pulcherrima
Willd., and hereinafter referred to by the name ‘Winrose’.
The new Poinsettia a product of a induced mutation breeding program conducted by the Inventor in Encinitas, Calif. The objective of the breeding program is to create new Poinsettia cultivars having strong stems, reflexed flower bracts with desirable colors, uniform plant habit and excellent post-production longevity.
The new Poinsettia is an induced mutation of the
Euphorbia pulcherrima
Willd. cultivar Windark, disclosed in U.S. Plant Pat. No 12,546. Mutations were induced by exposing unrooted cuttings of ‘Windark’ to gamma radiation. The new Poinsettia was discovered and selected by the Inventor as a single flowering plant within a population of irradiated plants of the cultivar Windark on Aug. 23, 1999, in a controlled environment in Encinitas, Calif. The selection of this plant was based on its strong stems and reflexed red-colored flower bracts.
Asexual reproduction of the new Poinsettia by terminal cuttings propagated in a controlled environment in Encinitas, Calif., since late August, 1999, has shown that the unique features of this new Poinsettia are stable and reproduced true to type in successive generations of asexual reproduction.
BRIEF SUMMARY OF THE INVENTION
The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Winrose’. These characteristics in combination distinguish ‘Winrose’ as a new and distinct cultivar:
1. Ball-shaped inflorescences with recurved red-colored flower bracts.
2. Recurved dark green-colored leaves.
3. Uniform plant habit.
4. Strong erect stems.
5. Very early flowering; natural season flower maturity date is mid-November for plants grown in Encinitas, Calif.; response time, about 7 weeks.
6. Excellent post-production longevity.
Plants of the new Poinsettia are most similar to the parent, the cultivar Windark. Plants of the new Poinsettia differ primarily from plants of the parent in flower bract coloration as plants of the cultivar Windark have dark red-colored flower bracts.
Campell Bruce R.
Hwu June
Paul Ecke Ranch
Whealy C. A.
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