USPP35062P2 - Gentiana plant named ‘Ashiro 29-2005’ - Google Patents

Abstract

A new variety of Gentiana L. plant (Japanese gentian) which is a double flower type and has about 1-2 (1.5 on average) side shoots with only one node.

Description

Common name: Japanese gentian.

Botanical classification: Gentiana L. hybrid.

Variety denomination: ‘Ashiro 29-2005’.

BACKGROUND OF THE NEW VARIETY

The present invention relates to a new and distinct variety of Japanese gentian, Gentiana L., which has been given the variety denomination ‘Ashiro 29-2005’.

This new gentian is a double flower type and has about 1-2 (1.5 on average) side shoots with only one node. It is adapted for use as cut flowers or pot flowers.

ORIGIN OF THE VARIETY

The variety resulted from a multiple-step cross-breeding program starting from a group of unpatented varieties. The ancestor varieties were unpatented strains owned by the applicant, having the company-internal names: ‘17INP’ which belongs to the species Gentiana triflora, and ‘26-904’, ‘12-316-3’, ‘17SUP’, and ‘8-130SP6A1’, which belong to the species Gentiana scabra. Group crosses and/or self-crosses with a single individual were performed. The program had seven steps, as shown in the map of FIG. 6 , which also indicates the company-internal names of the intermediary, unpatented strains. At each step, the individuals with good plant and flower shape were selected. The corresponding species identification is ((scabra x triflora) x scabra)) x ((scabra x triflora) x scabra)).

With respect to the direct parents ‘28-2001’ and ‘27-836-18’, the instant variety ‘Ashiro 29-2005’ has a triploid and double-flowered flower type, whereas ‘28-2001’ has tetraploid and single-flowered flower type, and ‘27-836-18’ has diploid and double-flowered flower type.

The multiple-step cross-breeding program was performed over multiple growing seasons up to 2018; in September 2018, selection of the variety was performed. We asexually reproduced the variety by vegetative reproduction through cuttings, tissue culturing via lateral bud culture, and in October 2020, the new variety was found to be stable and asexually reproduced true to type in successive generations.

The variety was developed and propagated in Iwate, Japan.

The variety can be propagated by cutting (optimal timing is mid-February) and/or tissue culturing via lateral bud culture.

Cultivation of the variety does not require particular conditions. Maintenance and storage method of the plant material can be by tissue culture via lateral bud culture.

The variety is adapted for use as cut flowers or pot flowers.

SUMMARY OF THE VARIETY

The variety is distinguished by double flower type and has about 1-2 (1.5 on average) side shoots with only one node, as compared to ‘Shine Blue Ashiro’ variety which is single flower type and has about 6 side shoots with only one node. ‘Shine Blue Ashiro’ is unpatented.

A comparison with ‘Shine Blue Ashiro’ variety is presented as follows in Table 1:

TABLE 1
	‘Shine Blue Ashiro’	‘Ashiro 29-2005’
Flower type	Single	double
Number of side shoots with	6	1-2
only one node		(1.5 on average)

Additional distinguishing characteristics of the ‘Ashiro 29-2005’ plant are the five (5.0 on average) lobes of the paracorolla, and the strong purplish-blue color (94B on R.H.S. Colour Chart) of the secondary lobes with acute apex in-between the main lobes of the corolla.

BRIEF DESCRIPTION OF THE DRAWINGS

In the accompanying drawings, which are as nearly true as is reasonable possible to make in a color illustration of this type:

FIG. 1 is a color photograph showing the ‘Ashiro 29-2005’ plant as grown in a culturing bed;

FIG. 2 is a color photograph showing flowers of the ‘Ashiro 29-2005’ plant;

FIG. 3 is a color photograph showing flowering stages of flowers of the ‘Ashiro 29-2005’ plant;

FIG. 4 is a color photograph showing petals of flowers of the ‘Ashiro 29-2005’ plant;

FIG. 5 is another color photograph showing flowers of the ‘Ashiro 29-2005’ plant;

FIG. 6 is a map showing the steps of the cross-breeding program from which the variety was obtained.

Due to chemical and/or digital development, processing and printing, the plants or portions of plants depicted in the photographs may or may not be precisely accurate, when compared to the actual botanical specimens.

DETAILED DESCRIPTION OF THE INVENTION

The plants in the botanical description below and shown in the Figures were grown in Iwate, Japan. The plants were collected in October 2020 at age 16 months.

Colors are given according to The 2015 R.H.S. Colour Chart.

BOTANICAL DESCRIPTION

TABLE 2
Stem	Length:	57.8 cm
	Thickness (main flowering	4.1 mm
	stem):
	Number of flowering stems	27.6
	per plant (average):
	Texture:	smooth
	Color:	light yellow green (145B
		on RHS Colour Chart)
	Anthocyanin coloration at two	absent
	thirds from base:
	Number of internodes longer	17.8
	than 5 mm (average):
	Length of internode in central	3.4 cm
	third:
	Side shoots:	present
	Number of side shoots with	1.5
	only one node (average):
	Number of side shoots with	4.0
	more than one node (average):
	Length of side shoots (average):	21.8 cm
	Diameter of side shoots	2.5 mm
	(average):
	Texture of side shoots:	smooth
	Color of side shoots:	light yellow green (145C
		on RHS Colour Chart)
	Position of longest leaf:	in central third
Leaf	Length:	7.2 cm
	Leaf arrangement:	opposite leaf
		arrangement
	Leaf attachment:	sessile
	Leaf apex:	acuminate
	Leaf margin:	entire
	Leaf base:	rounded
	Leaf texture (inner side):	smooth
	Leaf texture (outer side):	smooth
	Leaf color (inner side):	moderate olive green
		(137A on RHS Colour
		Chart)
	Leaf color (outer side):	light yellow green (138D
		on RHS Colour Chart)
	Leaf venation pattern:	parallel venation (three
		lines)
	Leaf venation color:	light yellow green (150D
		on RHS Colour Chart)
	Width:	3.1 cm
	Shape:	lanceolate
	Shape in cross section:	folded upwards
	Shape in longitudinal section:	convex
	Twisting:	absent
	Number of conspicuous veins:	3
	Anthocyanin coloration:	present, dark greyish red
		(N186C on RHS Colour
		Chart)
Inflorescence	Distribution of flowers:	clustered
	Position of flowers:	terminal and axillary
	Number of inflorescences	197.3
	per plant per season (average):
Plant:	Number of terminal flowers	10.7
	(average):
	Typical growth habit:	erect
	Plant height (average):	57.8 cm
	Plant spread (average):	43.0 cm
	Plant shape:	erect
	Number of flowers per	top: 10.7
	inflorescence:	others: 2.8
	Number of flowers at central	2.8
	flowering node (average):
	Number of flowering node:	4.6
Flower bud	Shape of bud:	narrow oval
(about 4 days
before
flowering)
	Length of bud (average):	39.5 mm
	Diameter of bud (average):	9.3 mm
	Color of bud:	light purple (N82C on
		RHS Colour Chart)
Flower	Type:	double
	Time of flowering:	early October
	Flower longevity (potted plant):	11 days
	Flower longevity (cut flower):	8 days
Corolla	Depth:	47.1 mm
	Diameter at middle third:	14.8 mm
	Shape:	campanulate
	Diameter at top:	29.5 mm
	Curvature of lobes:	reflexed
	Margin of lobes:	entire
	Texture of lobes:	smooth
	Color of outer side of lobes:	very light purple (85C on
		RHS Colour Chart)
	Color of inner side of lobes:	brilliant purplish blue
		(94C on RHS Colour
		Chart)
	Tube length (average):	26.7 mm
	Tube texture:	smooth
	Color of inner side of tube:	very pale purple (85D on
		RHS Colour Chart)
	Color of upper part of	brilliant purplish blue
	inner side of tube:	(94C on RHS Colour
		Chart)
	Color of outer side of tube:	very light purple (85C on
		RHS Colour Chart)
	Color of upper part of	light purple (85A on RHS
	outer side of tube:	Colour Chart)
	Streaked pattern on outer	present
	side of tube:
	Color of streaked pattern on	light purple (N82C on
	outer side of tube:	RHS Colour Chart)
	Number of lobes:	5
	Length of lobes:	10.7 mm
	Width of lobes:	10.2 mm
	Shape of lobes:	ovate
	Shape of distal end of lobes:	acute
	Presence of secondary lobes:	present
	Shape of secondary lobes:	acute
	Shape of secondary lobe apex:	acute
	Margin of secondary lobes:	entire
	Length of secondary lobes	2.4 mm
	(average):
	Width of secondary lobes	3.3 mm
	(average):
	Texture of secondary lobes:	smooth
	Color of secondary lobes:	strong purplish-blue (94B
		on RHS Colour Chart) for
		both surfaces
Paracorolla	Presence of paracorolla:	present
	Number of paracorolla lobes	5.0
	(average):
Calyx	Anthocyanin coloration:	absent
	Length of tube:	14.5 mm
	Diameter of tube:	5.6 mm
	Shape of tube:	funnel-shaped
	Texture of tube (inner side):	smooth
	Texture of tube (outer side):	slightly wrinkled
	Shape of lobe:	narrow lanceolate
Sepal	Sepal number:	5
	Sepal lobe shape:	narrow lanceolate
	Sepal length (average):	13.6 mm
	Sepal width (average):	2.4 mm
	Sepal apex:	acute
	Sepal margin:	entire
	Sepal texture (inner side):	smooth
	Sepal texture (outer side):	smooth
	Sepal color (inner side):	deep yellowish green
		(141A on the RHS Colour
		Chart)
	Sepal color (outer side):	light yellow green (138D
		on the RHS Colour Chart)
Reproductive	Stamens and anther:	stamens are mutated into
organs		petals and there is no
		anther
	Pistil number:	1
	Pistil length (average):	33.69 mm
	Stigma (none)
	Style (none)
	Ovary color:	light yellow green (145C
		on RHS Colour Chart)
Roots	Root shape:	fine and fibrous
Pedicel	No pedicel
Peduncle	Peduncle length (average):	1.1 mm
	Peduncle diameter (average):	2.09 mm
	Peduncle texture:	smooth
	Peduncle color:	light yellow green (145C
		on RHS Colour Chart)

In the above chart, specific numbers correspond to average values.

Other features of the plant are as follows:

• Disease resistance: Normal resistance was observed for pests and diseases in Iwate, Japan, using pest control by chemical spraying for gentian.
• Cold hardiness: Strong, the variety can withstand winter in Iwate, Japan, including low temperatures of about −10° C. with abundant snow.
• Heat tolerance: Normal, the variety can withstand summer in Iwate, Japan, including high temperatures of about 35° C.
• Flower fragrance: Absent.

Claims (1)

We claim:

1. A new and distinct variety of Gentiana plant named ‘Ashiro 29-2005’, substantially as described and illustrated herein.

Images