Plants – Herbaceous ornamnental flowering plant – Dahlia
Plant Patent
2002-06-05
2003-10-07
Campell, Bruce R. (Department: 1661)
Plants
Herbaceous ornamnental flowering plant
Dahlia
Plant Patent
active
PP014202
ABSTRACT:
Botanical classification/cultivar designation:
Dahlia variabilis
cultivar Margaret Improved.
BACKGROUND OF THE INVENTION
The present Invention relates to a new and distinct cultivar of Dahlia plant, botanically known as
Dahlia variabilis,
commercially referred to as a pot-type Dahlia, and hereinafter referred to by the cultivar name ‘Margaret Improved’.
The new Dahlia is a product of a planned breeding program conducted by the Inventor in Enkhuizen, The Netherlands. The objective of the breeding program is to create new pot-type Dahlia cultivars with desirable inflorescence form and attractive ray floret coloration.
The new Dahlia originated from a cross-pollination made by the Inventor of two unidentified proprietary
Dahlia variabilis
selections, not patented. The new Dahlia was discovered and selected by the Inventor in September, 1998, as a single flowering plant within the progeny of the stated cross-pollination grown in a controlled environment in Enkhuizen, The Netherlands.
Asexual reproduction of the new Dahlia by vegetative tip cuttings was first conducted in Enkhuizen, The Netherlands in September, 1998. Asexual reproduction by cuttings has shown that the unique features of this new Dahlia are stable and reproduced true to type in successive generations.
SUMMARY OF THE INVENTION
The cultivar Margaret Improved has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and daylength, without, however, any variance in genotype.
The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Margaret Improved’. These characteristics in combination distinguish ‘Margaret Improved’ as a new and distinct pot-type Dahlia:
1. Upright plant habit.
2. Freely branching habit, full and dense plants.
3. Double type inflorescences.
4. Yellow-colored ray florets.
Plants of the new Dahlia differ from plants of the parent selections primarily in ray floret coloration.
Plants of the new Dahlia can be compared to plants of the Dahlia cultivar Margaret, disclosed in U.S. Plant Pat. No. 6,769. In side-by-side comparisons conducted in Venhuizen, The Netherlands, plants of the new Dahlia had smaller inflorescences and twice as many ray florets per inflorescence as plants of the cultivar Margaret.
Ball FloraPlant, a division of Ball Horticultural Company
Campell Bruce R.
Hwu June
Whealy C. A.
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