USPP21147P2

USPP21147P2 - Aster plant named ‘DASKAT’

Info

Publication number: USPP21147P2
Application number: US12/380,349
Authority: US
Inventors: Bent Juhl Jensen
Original assignee: Gartneriet Raahoj
Current assignee: GARTNERIET BONGARTZ GMBH
Priority date: 2009-02-26
Filing date: 2009-02-26
Publication date: 2010-07-06
Anticipated expiration: 2029-02-26

Abstract

A new distinct cultivar of Aster plant named ‘DASKAT’, characterized by its upright and inverted conical plant habit; gray-green foliage; freely flowering habit; decorative, composite-type inflorescence with about 250 to 30 red-purple-colored ray florets; and only about 10 to 15 green-colored disc florets per inflorescence (almost 100% filled capitulae).

Description

Latin name of the genus and species of the claimed plant: Aster novi-belgi (now Symphyotrichum novi-belgii).

Variety denomination: ‘DASKAT’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Aster plant, botanically known as Aster novi-belgii (now Symphyotrichum novi-belgii) of the Asteraceae family, commonly known as Michaelmas Daisy and New York Aster, and hereinafter referred to by the cultivar name ‘DASKAT’.

The new Aster cultivar is a product of a planned breeding program conducted by the inventor, Bent Juhl JENSEN, in Malling, Denmark. The objective of the breeding program is to develop a new Aster variety with uniform plant growth habit, unique floret colors, and good postproduction longevity.

The new Aster cultivar originated from a cross made in a controlled breeding program by the inventor on Apr. 1, 2005, in Malling, Denmark. The female or seed parent is Aster novi-belgii ‘VICTORIA MATHILDE’ (unpatented, disclosed in pending CPVO Application No. 2006/1898). The male or pollen parent is the unpatented Aster novi-belgii seedling selection designated 05-008-007. The new Aster ‘DASKAT’ was discovered and selected by the inventor as a single flowering plant within the progeny of the stated cross in September of 2006 in a controlled environment in Malling, Denmark. The selection of the new Aster ‘DASKAT’ was based on its uniform plant growth habit and desirable inflorescence form and ray floret color.

Asexual reproduction of the new Aster cultivar by vegetative tip cuttings was first performed in June of 2006 in Mailing, Denmark, and has demonstrated that the combination of characteristics as herein disclosed for the new cultivar are firmly fixed and retained through successive generations of asexual reproduction. The new cultivar reproduces true to type.

BRIEF SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined to be unique characteristics of ‘DASKAT’, which in combination distinguish this Aster as a new and distinct cultivar:

- 1. Upright and inverted conical plant habit;
- 2. Gray-green foliage;
- 3. Freely flowering habit;
- 4. Decorative, composite-type inflorescence with about 250 to 300 red-purple-colored ray florets; and
- 5. Only about 10 to 15 green-colored disc florets per inflorescence (almost 100% filled capitulae).

Plants of the new Aster ‘DASKAT’ differ from plants of the female parent, Aster novi-belgii ‘VICTORIA MATHILDE’ (unpatented, disclosed in pending CPVO Application No. 2006/1898) in the characteristics described below:

- 1. Plants of ‘DASKAT’ are more compact than plants of ‘VICTORIA MATHILDE’;
- 2. Plants of ‘DASKAT’ produce more ray florets than plants of ‘VICTORIA MATHILDE’; and
- 3. Plants of ‘DASKAT’ produce red-purple (RHS N74B) ray florets whereas plants of ‘VICTORIA MATHILDE’ produce red-purple (RHS N66A) ray florets.

Plants of the male or pollen parent, the unpatented Aster novi-belgii seedling selection designated 05-008-007, are unavailable to provide a botanical comparison to plants of the new Aster ‘DASKAT’.

Of the many commercial cultivars known to the present inventor, the most similar in comparison to the new Aster ‘DASKAT’ are 1) Aster novi-belgii ‘VICTORIA PINK FANNY’ (patented, CPVO Grant No. 14582), 2) Aster novi-belgii ‘MILKA CARMINE’ (patented, CPVO Grant No. 5028). Plants of the new Aster ‘DASKAT’ differ from plants of 1) Aster novi-belgii ‘VICTORIA PINK FANNY’ and 2) Aster novi-belgii ‘MILKA CARMINE’ in the characteristics provided in Table 1.

TABLE 1

		Comparison
		Cultivar
	New	‘VICTORIA PINK	Comparison Cultivar
Char-	Cultivar	FANNY’	‘MILKA CARMINE’
acteristic	‘DASKAT’	(patented)	(patented)

Leaf Shape:	Gladiate to	Ensiform	Gladiate
	linear
Mature Leaf	Gray-green,	Green,	Green,
Color (upper	RHS N189B	RHS 137A	RHS 137A
surface):
Capitulum	Depth: 15	Depth: 12 mm	Depth: 10 mm
Size:	mm
Ray Florets	About 250 to	About 250 ray flo-	About 240 ray florets
	300 ray flo-	rets per flower,	per flower, which are
	rets per in-	which are involute,	involute in shape, with
	florescence,	almost tubular in	acute apex
	which are	shape, with rounded
	oval, slightly	to slightly retuse
	involute in	apex
	shape, with
	rounded,
	slightly re-
	tuse apex
Mature Ray	Red-purple,	Purple,	Purple,
Floret Color	RHS N74B	RHS 77C	RHS 75C
(upper
surface):
Disc Florets:	About 10 to	About 50 to 60 disc	About 30 to 40 disc
	15 disc flo-	florets per	florets per
	rets per	inflorescence	inflorescence
	inflorescence
Mature Disc	Green, RHS	Yellow-Green,	Yellow, RHS 9C
Floret Color:	137D	RHS 151B

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of the new Aster ‘DASKAT’ showing the colors as true as is reasonably possible with colored reproductions of this type. Colors in the photographs may differ slightly from the color value cited in the detailed botanical description which accurately describe the color of ‘DASKAT’.

FIG. 1 shows a top and side view perspective a typical flowering plant of ‘DASKAT’ in a 9.5 cm pot, at 10 weeks of age after planting.

FIG. 2 shows a close-up view perspective of a typical mature inflorescence of ‘DASKAT’, at 10 weeks of age after planting.

FIG. 3 shows a close-up comparison view of a typical mature inflorescence and leaf of: 1) the new Aster ‘DASKAT’ (referenced by breeder designation 283-12), compared to 2) the comparison cultivar Aster ‘VICTORIA PINK FANNY’ (referenced by PINK FANNY), and 3) the comparison cultivar Aster ‘MILKA CARMINE’ (referenced by MILKA, ROSA).

DETAILED BOTANICAL DESCRIPTION

The new Aster ‘DASKAT’ has not been observed under all possible environmental conditions. The phenotype of the new cultivar may vary with variations in environment such as temperature, light intensity, and day length without any change in the genotype of the plant.

The aforementioned photographs, together with the following observations, measurements and values describe the new Aster ‘DASKAT’ as grown in a glass-covered greenhouse in Malling, Denmark, under conditions which closely approximate those generally used in commercial practice. ‘DASKAT’ plants were grown in 9.5 cm pots in a heated and lighted glass-covered greenhouse with the day temperatures ranging from 18° C. to 20° C. and the night temperature averaging 18° C. ‘DASKAT’ plants are grown under long day (20 hour) photoperiodic treatments for five weeks, followed by short day (12 hour) photoperiodic treatments for five weeks. During the long day (20 hour) photoperiodic treatments, if ambient light level falls below +50 Wm², a supplementary light at +200 Wm²is applied. ‘DASKAT’ plants ‘DASKAT’ plants were pinched once, and treated twice with the growth retardant Daminozide.

Color references are made to The Royal Horticultural Society Colour Chart (R.H.S.), 4th Edition, except where general colors of ordinary significance are used. Color values were taken under daylight conditions in Mailing, Denmark. The age of the ‘DASKAT’ plants shown in the photographs and described herein is about 10 weeks.

Classification:
- - Botanical.—Aster novi-belgii (now Symphyotrichum novi-belgii).
Parentage:
- - Female or seed parent.—Aster novi-belgii ‘VICTORIA MATHILDE’ (unpatented, disclosed in pending CPVO Application No. 2006/1898).
  - Male or pollen parent.—Aster novi-belgii seedling selection designated 05-008-007 (unpatented).
Propagation:
- - Type.—Vegetative tip cuttings.
  - Time and temperature to initiate roots.—Summer: About 12 days at 21° C. Winter: About 13 days at 21° C.
  - Rooting habit.—Fine, fibrous and freely branching.
  - Root color.—Gray-white, close to RHS 156D.
Plant description:
- - General appearance and form.—Herbaceous, decorative-type potted or bedding plant with upright plant habit. Aster inflorescences in composite heads.
  - Growth and branching habit.—Stems upright; inverted conical plant habit. Appropriate for 9 cm to 15 cm containers.
  - Growth rate/vigor.—Vigourous.
  - Plant height (soil level to top of plant plane).—About 17 cm.
  - Plant width (spread).—About 20 cm.
  - Crop time to produce a mature flowering plant.—After rooting, about 10 weeks are required to produce finished flowering plants in 9.5 cm pots.
Branches:
- - Number of branches per plant.—About 15, with 3 cuttings per pot.
  - Quantity of buds and inflorescence per lateral stem.—About 2 to 6, buds continue to develop when dead flowers are removed.
  - Branching habit.—Freely after pinching.
  - Length.—About 12 cm (including flowers).
  - Diameter.—About 3 mm.
  - Internode length.—About 9 mm. Range about 7 mm to 13 mm.
  - Strength.—Strong.
  - Aspect.—Upright.
  - Texture.—Glabrous with 3–4 longitudinal furrows.
  - Color.—Green, RHS 137C.
Foliage description:
- - Quantity per branch.—About 10 to 14.
  - Arrangement.—Single, alternate, petiolated. Older leaves are twisted in form.
  - Length.—Up to 6 cm.
  - Width.—Up to 14 mm.
  - Overall shape of leaf.—Gladiate to linear.
  - Shape at apex.—Acute.
  - Shape at base.—Decurrent, auriculate ½ clasping.
  - Margin.—Slightly crenulate.
  - Texture.—Glabrous, smooth, leathery.
  - Pubescence.—None.
  - Color of developing foliage.—Upper surface: Green, RHS 139A. Under surface: Gray-green, RHS 189A.
  - Color of mature foliage.—Upper surface: Gray-green, RHS N189B. Under surface: Gray-green, RHS 191A.
  - Venation pattern.—None, but prominent central abaxial vein.
  - Venation color.—Upper surface: Gray-green, RHS 191B. Under surface: Yellow-green, RHS 146C.
  - Petiole.—Length: 15 mm to 22 mm. Diameter: 1 mm to 3 mm. Appearance and angle: About 30° from vertical. Texture: Glabrous. Color: Green, RHS 137C.
Inflorescence description:
- - Appearance.—Terminal and axillary composite inflorescences held above and beyond the foliage, with about 250 to 300 lanceolate-shaped ray florets and only about 10 to 15 disc florets; ray and disc florets arranged acropetally on a capitulum. Inflorescences face upright and form is capitulum.
  - Natural flowering season.—Under natural season conditions, plants flower in late summer through autumn in Denmark. Season can be extended by vernalization and long day treatments.
  - Time to flower.—About 5 to 6 weeks (longevity of individual inflorescences is dependent on temperature and light conditions).
  - Postproduction longevity.—Inflorescences maintain good color and substance for about 27 days on the plant when in an indoor environment, and may keep longer if temperatures are maintained below 20° C. Inflorescences persistent.
  - Quantity of inflorescences.—About 40 to 50 buds and open inflorescences per plant.
  - Fragrance.—Faint.
  - Bud.—Rate of opening: About 10 per week, for 3 weeks after induction. Length: Up to 7 mm. Diameter: Up to 7 mm. Shape: Globular. Texture: Glabrous. Color: Green, RHS 137C.
  - Peduncle.—Length: 10 mm to 15 mm. Diameter: 1 mm. Appearance and angle: About 70° from vertical. Strength: Strong. Texture: Glabrous. Color: Green, RHS 134C.
  - Inflorescence.—Inflorescence height: About 6 to 8 cm. Inflorescence diameter About 4 to 6 cm. Capitulum height: About 1.5 cm Capitulum diameter: About 3.5 cm
  - Quantity of flowers (capitulae) per inflorescence.—About 10 to 14.
  - Ray florets.—Arrangement and quanity: Imbricate, about 250 to 300 ray florets per capitulum in 9 to 12 whorls of ray florets (depending on light and temperature conditions). Orientation: Initially upright, later mostly horizontal. Aspect: Straight to slightly involute. Appearance: Lanceolate, but sides turn inward (involute). Length: About 10 mm. Width: About 2 mm. Overall shape: Oval, slightly involute. Shape at apex: Rounded, slighlty retuse. Shape at base: Fused. Margin: Entire. Texture: Upper and under surfaces: Smooth, glabrous, silky. Pubescence: Subtended by numerous short, about 2 mm, white hairs. Color (when opening and fully opened): Upper surface: red-purple, RHS N74B. Under surface: purple, RHS 76B. Fading: Yes, gray-purple, RHS 187B.
  - Disc florets.—Arrangement: About 10 to 15 disc florets, massed at center of capitulum. Length: About 2 mm. Width: About 1 mm. Disc area diameter: About 2 mm. Overall shape: Tubular, elongated. Shape at apex: Acute. Shape at base: Fused to tube. Margin: Entire. Texture: Upper and under surfaces: Scale-like, parchment thin. Pubescence: Subtended by numerous short, about 2 mm, white hairs. Color (when opening): Upper and under surfaces: Green, RHS 137D. Color (when fully opened): Upper and under surfaces: Green, RHS 137D.
  - Phyllaries.—Quantity per inflorescence: Involucre, about 40 to 50. Length: About 3 to 5 mm. Width: About 1 to 2 mm. Overall shape: Lanceolate. Apex shape: Acute. Base shape: Truncate, fused. Margin: Entire. Texture: Hairy, setulose edges, verrucose abaxial surface. Color (immature): Upper surface: Green, RHS 137B. Under surface: Green, RHS 137D. Color (mature): Upper surface: Green, RHS 137A.

Under surface: Green, RHS 137B.

Reproductive organs:
- - Androecium (on disc florets only).—Stamen number: 1 or 5 per floret; fused around style. Stamen length: About 1 mm. Anther shape: Narrowly cylindrical, somewhat fused. Anther length: About 0.3 mm. Anther color: Yellow, RHS 8B. Pollen amount: Moderate. Pollen color: Yellow, RHS 8A.
  - Gynoecium (on disc and ray florets).—Pistil number: 1 per floret. Pistil length: About 2 mm. Stigma shape: Cleft. Stigma length: About 1.2 mm. Stigma color: White, RHS N155C. Style length: About 1 mm. Style color: White, RHS N155D. Ovary diameter: About 2 mm. Ovary color: White, RHS N155D.
Seed: None observed.
Fruit: None observed.
Disease/pest resistance: Resistance to pathogens and pests common to Asters has not been observed on plants grown under commercial greenhouse conditions.
Disease/pest susceptibility: Resistance to pathogens and pests common to Asters has not been observed on plant grown under commercial green house conditions, except mildew after flowers wilt.
High temperature tolerance: Not specifically tested, but if enough water is available, tolerant up to 35° C.
Low temperature tolerance: Not specifically tested, but if enough water is available, tolerant to −15° C.

Claims

1. A new and distinct cultivar of Aster plant named ‘DASKAT’, as illustrated and described herein.