Calibrachoa plant named ‘Kakegawa S71’

Abstract

‘Kakegawa S71’ is a new variety of Calibrachoa plant. This new variety has light orange petal lobes with darker orange veins and yellow corolla tube and dark green foliage.

Description

Genus/species: Calibrachoa species.

Varietal denomination: ‘Kakegawa S71’.

BACKGROUND OF THE INVENTION

‘Kakegawa S71’ originated from a hybridization made in February 2000 in Kakegawa, Japan. The female parent was a Calibrachoa breeding line with red-orange colored flowers and semi-creeping habit known as 0B-11. The male parent was a Calibrachoa ‘Kakegawa S52’ (U.S. Plant Pat. No. 15,046).

In August 2000, F₁ seed was sown from this cross and eighty plants were transplanted to outdoors. These plants ranged from mounding to semi-creeping habit and orange to rose flower color. One plant with semi-creeping habit, light orange petals and red-orange petal mid-veins was selected and vegetatively propagated. In February 2001, this selection was vegetatively propagated again and evaluated in 9 cm hanging pots in a greenhouse and in an open field.

The selection was further evaluated from new vegetative plants in Salinas, Calif. during 2002. The selection was subsequently named ‘Kakegawa S71’. ‘Kakegawa S71’ was asexually reproduced by stem cuttings in Salinas, Calif. and was determined to have its characteristics firmly fixed in successive generations of asexual propagation.

DESCRIPTION FOR PHOTOGRAPH

This new Calibrachoa plant is illustrated by the accompanying photograph which shows blooms and foliage of the plant in full color. The colors shown being as true as can be reasonably obtained by conventional photographic procedures.

FIG. 1 shows a close-up view of flowers.

FIG. 2 shows the entire plant.

DESCRIPTION OF THE GENUS CALIBRACHOA LLAVE & LEX

The genus Petunia was originally established in 1803 by A. L. Jussieu, who described both P. parviflora and P. nyctaginifloa as type species. Using a non-horticultural system that selected the first mentioned species as the type species (lectotype), N. L. Britton and H. A. Brown declared P. parviflora as the type species for Petunia in 1913.

During the 1980's and 1990, H. J. Wijsman published a series of articles regarding the ancestry of P. hybrida, the Garden Petunia, and the inter-relationship of several species classified as Petunia. These studies discovered that P. hybrida and its ancestral species, P. nyctaginiflora (=P. axillaris) and P. violacea (=P. integrifolia), possessed 14 pairs of chromosomes while several other species, including P. parviflora, possessed 18 pairs of chromosomes. Since P. parviflora was the lectotype species for the Petunia genus, Wijsman and J. H. de Jong proposed transferring the 14 chromosome species to the genus Stimoryne. Horticulturists opposed reclassifying the Garden Petunia and in 1986, Wijsman proposed the alternative of making P. nyctaginiflora the lectotype species for Petunia and transferring the 18 chromosome species to another genus. The I. N. G. Committee adopted this proposal. By 1990, Wijsman had transferred several species, including P. parviflora (=C. parviflora) to Calibrachoa, originally established by Llave and Lexarza in 1825. Calibrachoa parviflora (=C. mexicana Llave & Lexarza) is now the type species for the genus Calibrachoa.

Classification of the current Petunia and Calibrachoa species is still in progress. New species are also being identified. Consequently, a proper description has not been written for the Calibrachoa genus. Calibrachoa can, however, be distinguished from Petunia based on the higher chromosome number, chromosome morphology, plant branching habit and type of flower bud aestivation. Whereas Petunia species bear a flower peduncle and one new stem from a node, Calibrachoa bear a flower peduncle and three stems. Petunia species have a cochlear corolla bud, a single outermost petal covers the other four, radially folded and terminally contorted petals. Calibrachoa flower buds are flat with all five petals linearly folded and the two lower petals forming a cover around the three other petals and fused together.

ENVIRONMENTAL CONDITIONS FOR PLANT GROWTH

The terminal 1.0 to 1.5 inches of an actively growing stem was excised. The vegetative cuttings were propagated in five to six weeks. The base of the cuttings were dipped for 1 to 2 seconds in a 1:9 solution of DIP 'N GROW (1 DIP 'N GROW:9 water) root-inducing solution immediately prior to sticking into the cells trays. Cuttings were stuck into plastic cell trays having 98 cells and containing a moistened peat moss-based growing medium. The cuttings were misted with water from overhead for 10 seconds every 30 minutes until sufficient roots were formed.

Rooted cuttings were transplanted and grown in 20 cm diameter plastic pots in a glass greenhouse located in Salinas, Calif. Pots contained a peat moss-based growing medium. Soluble fertilizer containing 20% nitrogen, 10% phosphorus and 20% potassium was applied once a day or every other day by overhead irrigation. Pots were top-dressed with a dry, slow release fertilizer containing 20% nitrogen, 10% phosphorus and 18% potassium. The typical average air temperature was 24° C.

DETAILED DESCRIPTION OF THE NEW PLANT

Data below collected on plants three months from rooted cutting. Five plants grown in 20 cm diameter pots were transplanted to a 41 cm hanging basket. Color references are to The R.H.S. Colour Chart of The Royal Horticultural Society of London (R.H.S.). The following traits and characteristics describe the new variety.

• Classification:
  • • Family.—Solanaceae.
    • Species.—Calibrachoa sp.
    • Common names.—Calibrachoa.
• Parentage:
  • • Female parent.—Breeding line 0B-11.
    • Male parent.—‘Kakegawa S52’ (U.S. Plant Pat. No. 15,046).
• Growth:
  • • Habit.—Decumbent.
    • Height.—23.0 cm.
    • Spread.—115.0 cm when grown in a 41 cm hanging basket or pot, and using five 20 cm potted plants in the hanging basket.
    • Life cycle.—Perennial.
    • Form.—Branching.
    • Time to produce a rooted cutting.—6 weeks.
    • Time to bloom from propagation.—10 weeks.
    • Flowering requirements.—Will flower so long as day length is greater than 12 hours and temperatures exceed 13° C.
    • Resistance/susceptibility.—Excellent resistance to rain, heat and drought. Will not tolerate temperatures below 10° C. Plants are susceptible to Botrytis, powdery mildew, various stem and root rots and certain viruses, like Tobacco Mosaic Virus and Impatiens Necrotic Spotted Virus. Plants can be infested with aphids, leafminer, whitefly and various Lepidoptera.
• Stems:
  • • Stem color.—RHS 144B (yellow-green).
    • Anthocyanin color.—RHS N77A (purple).
    • Pubescence.—Heavy.
    • Pubescence color.—RHS N155A (white).
    • Stem description.—Round.
    • Stem length.—3.5 cm-4.0 cm.
    • Stem diameter.—2.0 mm.
    • Internode length.—1.5-2.5 cm.
• Leaves:
  • • Leaf arrangement.—Alternate.
    • Leaf shape.—Elliptical.
    • Leaf tip.—Mucronate.
    • Leaf base.—Decurrent.
    • Leaf margin.—Entire.
    • Leaf surface.—Rough, dull.
    • Leaf length.—2.0 cm.
    • Leaf width.—1.0 cm.
    • Leaf color.—Upper surface: RHS 137A (green); lower surface: RHS 139B (green).
    • Leaf surface pubescence.—Slight.
    • Leaf surface pubescence color.—RHS 155B (white).
    • Petiole length.—2.0 mm.
    • Petiole color.—RHS 138B (green).
    • Venation.—Pinnate.
• Flowers:
  • • Inflorescence type.—Solitary.
    • Flowering habit.—Indeterminate.
    • Duration of flower life.—6 days.
    • Shape.—The flowers are funnel shaped with five fissures and a shallow, yet prominent, indentation of the petal tip at the mid-vein.
    • Flower depth.—2.0 cm-2.2 cm.
    • Floral tube length.—0.8 cm-1.2 cm.
    • Floral tube diameter.—0.5 cm-0.6 cm.
    • Flower diameter.—2.3 cm.
    • Calyx.—5 sepals, free; 1.8 cm×4 mm (L×W).
    • Sepal shape.—Lanceolate.
    • Sepal apex.—Mucronate.
    • Sepal margin.—Entire.
    • Sepal color.—RHS 145B (yellow-green).
    • Bud shape.—Ovate.
    • Bud length.—1.5 cm.
    • Bud diameter.—0.4 cm-0.5 cm.
    • Bud surface.—Pubescent.
    • Bud color.—RHS 150B (yellow-green).
    • Peduncle length.—2.0-2.5 cm.
    • Peduncle color.—RHS 144A (yellow-green).
    • Ovary.—Superior.
    • Pistil number.—1.
    • Stigma color.—RHS 150A (yellow).
    • Style color.—RHS 150B (yellow-green).
    • Corolla.—5 petals, fused.
    • Petal shape.—Spatulate.
    • Petal apex.—Truncate.
    • Petal margin.—Entire.
    • Petal pubescence.—Glabrous.
    • Petal size.—1.5 cm×1.0 cm.
    • Petal color.—Lobes, upper: RHS 37A (red) when young fading to RHS 20A (yellow-orange) with RHS 30D (orange-red) petal veins (mid-veins and secondary veins) prior to senescence; lower RHS 47C (red) when young fading to RHS 15A (yellow) prior to senescence; Corolla tube: inner RHS 2A (yellow) with RHS 166A (greyed-orange) veins; outer RHS 2A (yellow).
    • Stamen number.—5, free.
    • Stamen color.—RHS 150C (yellow-green).
    • Pollen color.—RHS 10A (yellow).
    • Fragrance.—Absent.
    • Seed production.—None.

COMPARISON WITH MOST SIMILAR VARIETY

‘Kakegawa S71’ is a distinct variety of Calibrachoa owing to its light orange petal lobes with darker veins and yellow corolla tube. ‘Kakegawa S71’ is most similar to the variety ‘Sunbelkist’ (U.S. Plant Pat. No. 11,352); however, there are differences as shown in Table 1 below.

	TABLE 1
	‘Kakegawa S71’	‘Sunbelkist’
Upper Petal	RHS 37A (red) fading to	RHS 45B (red) fading to
Color	RHS 20A (yellow-orange)	RHS 9C (yellow) with red
	with RHS 30D (orange-red)	veins. There is blending in
	veins.	between the two colors on
		most of the flowers.

Claims

1. A new and distinct cultivar of Calibrachoa plant as shown and described herein.