USPP29732P2 - Thunbergia plant named ‘VOLTHU 7887’ - Google Patents

Thunbergia plant named ‘VOLTHU 7887’ Download PDF

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USPP29732P2
USPP29732P2 US15/731,226 US201715731226V USPP29732P2 US PP29732 P2 USPP29732 P2 US PP29732P2 US 201715731226 V US201715731226 V US 201715731226V US PP29732 P2 USPP29732 P2 US PP29732P2
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thunbergia
plants
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volthu
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Hubertus Volmary
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  • Botanical designation Thunbergia alata.
  • the present invention relates to a new and distinct cultivar of Thunbergia plant, botanically known as Thunbergia alata , and hereinafter referred to by the name ‘VOLTHU 7887’.
  • the new Thunbergia plant is a product of a planned breeding program conducted by the Inventor in Muenster, Germany.
  • the objective of the breeding program is to create new freely-flowering Thunbergia plants with dark green-colored leaves, unique flower colors and long flowering period.
  • the new Thunbergia plant originated from an open-pollination during the summer of 2013 in Muenster, Germany of an unnamed proprietary selection of Thunbergia alata , not patented, as the female, or seed, parent with an unknown selection of Thunbergia alata as the male, or pollen, parent.
  • the new Thunbergia plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated open-pollination in a controlled environment in Muenster, Germany during the summer of 2014.
  • Plants of the new Thunbergia have not been observed under all possible combinations of environmental conditions and cultural practices.
  • the phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.
  • Plants of the new Thunbergia can be compared to plants of the female parent selection. Plants of the new Thunbergia differ from plants of the female parent selection primarily in the following characteristics:
  • plants of the new Thunbergia can be compared to plants of Thunbergia alata ‘White Eye’, not patented. In side-by-side comparisons, plants of the new Thunbergia differ from plants of ‘White Eye’ in the following characteristics:
  • the photograph on the first sheet comprises a side perspective view of a typical flowering plant of ‘VOLTHU 7887’.
  • the photograph on the second sheet is a close-up view of a typical flowering plant of ‘VOLTHU 7887’.

Abstract

A new and distinct cultivar of Thunbergia plant named ‘VOLTHU 7887’, characterized by its upright and vining plant habit; freely branching habit; dense and bushy plant form; freely flowering habit; large white-colored flowers; and good garden performance.

Description

Botanical designation: Thunbergia alata.
Cultivar denomination: ‘VOLTHU 7887’.
BACKGROUND OF THE INVENTION
The present invention relates to a new and distinct cultivar of Thunbergia plant, botanically known as Thunbergia alata, and hereinafter referred to by the name ‘VOLTHU 7887’.
The new Thunbergia plant is a product of a planned breeding program conducted by the Inventor in Muenster, Germany. The objective of the breeding program is to create new freely-flowering Thunbergia plants with dark green-colored leaves, unique flower colors and long flowering period.
The new Thunbergia plant originated from an open-pollination during the summer of 2013 in Muenster, Germany of an unnamed proprietary selection of Thunbergia alata, not patented, as the female, or seed, parent with an unknown selection of Thunbergia alata as the male, or pollen, parent. The new Thunbergia plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated open-pollination in a controlled environment in Muenster, Germany during the summer of 2014.
Asexual reproduction of the new Thunbergia plant by terminal cuttings in a controlled greenhouse environment in Muenster, Germany since the late summer of 2014 has shown that the unique features of this new Thunbergia plant are stable and reproduced true to type in successive generations.
SUMMARY OF THE INVENTION
Plants of the new Thunbergia have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity without, however, any variance in genotype.
The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘VOLTHU 7887’. These characteristics in combination distinguish ‘VOLTHU 7887’ as a new and distinct Thunbergia plant:
    • 1. Upright and vining plant habit.
    • 2. Freely branching habit; dense and bushy plant form.
    • 3. Freely flowering habit.
    • 4. Large white-colored flowers.
    • 5. Good garden performance.
Plants of the new Thunbergia can be compared to plants of the female parent selection. Plants of the new Thunbergia differ from plants of the female parent selection primarily in the following characteristics:
    • 1. Plants of the new Thunbergia have darker green-colored leaves than plants of the female parent selection.
    • 2. Plants of the new Thunbergia and the female parent selection differ in flower color as plants of the female parent selection have orange-colored flowers.
Plants of the new Thunbergia can be compared to plants of Thunbergia alata ‘White Eye’, not patented. In side-by-side comparisons, plants of the new Thunbergia differ from plants of ‘White Eye’ in the following characteristics:
    • 1. Plants of the new Thunbergia have darker green-colored leaves than plants of ‘White Eye’.
    • 2. Plants of the new Thunbergia are more freely flowering than plants of ‘White Eye’.
    • 3. Plants of the new Thunbergia have larger flowers than plants of ‘White Eye’.
BRIEF DESCRIPTION OF THE PHOTOGRAPHS
The accompanying colored photographs illustrate the overall appearance of the new Thunbergia plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Thunbergia plant.
The photograph on the first sheet comprises a side perspective view of a typical flowering plant of ‘VOLTHU 7887’.
The photograph on the second sheet is a close-up view of a typical flowering plant of ‘VOLTHU 7887’.
DETAILED BOTANICAL DESCRIPTION
The aforementioned photographs and following observations, measurements and values describe plants grown during the spring in three-liter containers in a glass-covered greenhouse in Muenster, Germany and under cultural practices typical of commercial Thunbergia production. During the production of the plants, day temperatures ranged from 18° C. to 20° C., night temperatures ranged from 15° C. to 18° C. and light levels ranged from 5,000 to 40,000 lux. Plants were pinched one time about three weeks after planting. Plants were 16 weeks old when the photographs and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used.
  • Botanical classification: Thunbergia alata ‘VOLTHU 7887’.
  • Parentage:
      • Female, or seed, parent.—Unnamed proprietary selection of Thunbergia alata, not patented.
      • Male or pollen parent.—Unknown selection of Thunbergia alata, not patented.
  • Propagation:
      • Type.—By terminal cuttings.
      • Time to initiate roots, summer.—About one to two weeks at temperatures about 20° C. to 25° C.
      • Time to initiate roots, winter.—About two to three weeks at temperatures about 15° C. to 23° C.
      • Time to develop roots, summer.—About three weeks at temperatures about 20° C. to 25° C.
      • Time to develop roots, winter.—About 30 days at temperatures about 15° C. to 23° C.
      • Root description.—Fine, fibrous; typically yellowish white in color, actual color of the roots is dependent on substrate composition, water quality, fertilizer type and formulation, substrate temperature and physiological age of roots.
      • Rooting habit.—Freely branching; medium density.
  • Plant description:
      • Plant and growth habit.—Upright and vining plant habit; plants require support; moderately vigorous to vigorous growth habit; moderately rapid growth rate.
      • Branching habit.—Freely branching habit with lateral branches potentially developing at every node; pinching enhances lateral branch development; bushy and dense habit.
      • Plant height.—About 80 cm to 100 cm.
      • Plant diameter (area of spread).—About 35 cm.
  • Lateral branch description:
      • Length.—About 50 cm.
      • Diameter.—About 1.5 mm.
      • Internode length.—About 14 cm.
      • Texture.—Slightly pubescent.
      • Strength.—Strong, flexible.
      • Color.—Close to 142A.
  • Leaf description:
      • Arrangement.—Opposite, simple.
      • Length.—About 8.4 cm.
      • Width.—About 5 cm.
      • Shape.—Roughly deltoid.
      • Apex.—Acute to cuspidate.
      • Base.—Sagittate.
      • Margin.—Entire.
      • Aspect.—Horizontal to somewhat downward.
      • Texture and luster, upper and lower surfaces.—Pubescent; dull.
      • Venation pattern.—Pinnate.
      • Color.—Developing and fully expanded leaves, upper surface: Close to 146A; venation, close to 146A. Developing and fully expanded leaves, lower surface: Close to 146B; venation, close to 149D.
      • Petioles.—Length: About 4.5 cm. Diameter: About 5 mm. Texture, upper and lower surfaces: Pubescent. Color, upper and lower surfaces: Close to 142A.
  • Flower description:
      • Flower type and habit.—Single axillary salverform flowers; freely flowering habit with numerous flowers developing per plant; flowers face outward to slightly drooping.
      • Natural flowering season.—Plants flower continuously from April until frost in Germany; plants begin flowering about ten to twelve weeks after planting.
      • Flower longevity.—Flowers last about five days on the plant; flowers persistent.
      • Fragrance.—None detected.
      • Flower diameter.—About 4.5 cm to 5 cm.
      • Flower length (height).—About 4.5 cm.
      • Flower buds.—Length: About 2.2 cm. Diameter: About 1.7 cm. Shape: Lanceolate to deltoid. Color: Close to 144B.
      • Petals.—Arrangement: Corolla consists of five petals in a single whorl and fused towards the base. Length: About 2.6 cm. Width: About 2 cm. Shape: Broadly elliptic to rounded. Apex: Broadly emarginate. Base: Fused. Margin: Entire, occasionally incised. Texture and luster, upper and lower surfaces: Smooth, glabrous; matte. Color: When opening and fully opened, upper surface: Close to 158C; throat, close to N186A; color does not change with development. When opening and fully opened, lower surface: Close to 155C; tube, close to 187A.
      • Flower bracts.—Quantity and arrangement: Two, opposite. Length: About 3.2 cm. Width: About 2.3 cm. Shape: Spear-shaped. Apex: Obtuse. Base: Cordate. Margin: Entire. Texture and luster, upper and lower surfaces: Slightly pubescent; matte. Color, upper and lower surfaces: Close to 144A.
      • Sepals.—Sepal development has not been observed on plants of the new Thunbergia.
      • Peduncles.—Length: About 8 cm. Diameter: About 1 mm. Angle: About 15° from stem axis. Strength: Strong, flexible. Texture: Densely pubescent. Color: Close to 144B.
      • Reproductive organs.—Androecium: Stamen number: About four. Filament length: About 5 mm. Filament color: Close to 11D. Anther length: About 1 cm. Anther shape: Ovate. Anther color: Close to 155D. Amount of pollen: None observed. Gynoecium: Pistil number: One. Style length: About 1.7 cm. Style color: Close to NN155D. Stigma appearance: Bi-parted. Stigma color: Close to NN155D. Ovary color: Close to NN155D.
      • Seeds and fruits.—Seed and fruit development has not been observed on plants of the new Thunbergia to date.
  • Garden performance: Plants of the new Thunbergia have been observed to have good garden performance and to tolerate rain, wind and temperatures ranging from about 5° to about 38° C.
  • Pathogen & pest resistance: Plants of the new Thunbergia have not been shown to be resistant to pathogens and pests common to Thunbergia plants.

Claims (1)

It is claimed:
1. A new and distinct Thunbergia plant named ‘VOLTHU 7887’ as illustrated and described.
US15/731,226 2017-05-05 2017-05-05 Thunbergia plant named ‘VOLTHU 7887’ Active USPP29732P2 (en)

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