Mandevilla plant named ‘Sunmandecos’

Details Mandevilla plant named ‘Sunmandecos’ Mandevilla plant named ‘Sunmandecos’

2003-04-09

2004-10-05

Bell, Kent (Department: 1661)

Plants

Shrub or vine

Mandevilla

Plant Patent

active

PP015202

ABSTRACT:

Botanical/commercial classification:
Mandevilla hybrida/Mandevilla
Plant.
Varietal denomination: cv. ‘Sunmandecos’.
BACKGROUND OF THE VARIETY
The present invention relates to a new and distinct variety of
Mandevilla
plant obtained from crossing
Mandevilla amabilis×boliviensis
‘Sunmandeho’ plant (female) and
Mandevilla amabilis
‘Rose Giant’ plant (male).
The
Mandevilla
is a popular plant and is used as a pot plant in the summer season or an indoor plant or a glasshouse plant. Only a limited number of varieties of
Mandevilla
plants are commercially available. Accordingly, this invention was aimed at obtaining a new variety having a large diameter flower, a purplish-pink flower, and a long flowering duration.
Initially, 100 seedlings were obtained in November 1998, from crossing a ‘Sunmandeho’ plant (U.S. Plant Pat. No. 11,556) as female parent and a ‘Rose Giant’ plant (non-patented in the United States) as pollen parent. These 100 seedlings were grown in a glasshouse from beginning in 1999 and one seedling was selected in view of its flower color and flowering duration. The selected seedling was propagated by the use of cuttings, and was then grown as a trial in a planter from May to November 2000. Finally the selected seedling was examined using the similar parent varieties ‘Sunmandeho’ and ‘Rose Giant’ for comparative purposes. As a result, it was concluded that this new
Mandevilla
is distinguishable from any other variety whose existence is known to us and is uniform and stable in its characteristics. This new variety has been named ‘Sunmandecos’.
In the following description, the color-coding is in accordance with The R.H.S. Colour Chart of The Royal Horticultural Society, London, England.
The
Mandevilla amabilis×boliviensis
‘Sunmandeho’ used as the female parent in the obtaining of this new variety ‘Sunmandecos’ is commercially available. The
Mandevilla amabilis×boliviensis
‘Sunmandeho’ also is presently maintained at 863-1, Aza-Iketani, Ohmori-cho, Gamou-gun, Youkaichi, Shiga, Japan. The main botanical characteristics of
Mandevilla amabilis×boliviensis
‘Sunmandeho’ are as follows:
Plant:
Growth habit.—
Lianous.
Stem:
Stem diameter.—
4.5 mm.
Stem color.—
Moderate Orange (R.H.S. Colour Chart No. 167D).
Lenticel.—
Not visible.
Branching.—
Few.
Internode length.—
13.0 cm.
Leaf:
Phyllotaxis.—
Opposite.
Whole shape of leaf.—
Elliptic.
Shape of leaf apex.—
Cuspidate.
Shape of leaf base.—
Acute.
Leaf length.—
11.0 cm.
Leaf width.—
5.0 cm.
Leaf thickness.—
0.2 mm.
Leaf margin.—
Entire.
Color of mature leaf upper side.—
Medium olive green (R.H.S. Colour Chart No. 146A).
Color of mature leaf reverse side.—
Medium yellow green (R.H.S. Colour Chart No. 146C).
Variegation of mature leaf.—
Absent.
Gloss of mature leaf upper side.—
Medium-strong.
Pubescence of mature leaf upper side.—
Absent.
Pubescence of mature leaf reverse side.—
Absent.
Leaf petiole length.—
1.5 cm.
Leaf petiole diameter.—
2.2 mm.
Leaf petiole color.—
Brilliant yellow green (R.H.S. Colour Chart No. 145B).
Flower:
Color of flower bud.—
Light yellow green (R.H.S. Colour Chart No. 149C).
Length of peduncle.—
1.6 cm.
Peduncle color.—
Strong yellow green (R.H.S. Colour Chart No. 144B).
Flower shape.—
Single.
Flower form.—
Perfectly open.
Flower facing direction.—
Horizontal to slanted upward.
Diameter of flower.—
11.0 cm.
Flower height.—
9.0 cm.
Floral tube length.—
5.5 cm.
Color of flower upper side.—
Yellowish-white (R.H.S. Colour Chart No. 155C.)
Color of inside surface of corolla throat.—
Vivid yellow (R.H.S. Colour Chart No. 15A).
Color of flower outside.—
Yellowish-white (R.H.S. Colour Chart No. 158D).
Whole shape of petal lobe.—
Orbicular.
Shape of petal lobe apex.—
Cuspidate.
Curvature of petal.—
Outwardly curved.
Waving of petal.—
Medium.
Petal length.—
5.5 cm.
Petal width.—
6.0 cm.
Petal number.—
5.
Reproductive organs:
Pistil.—
Present.
Pistil number.—
1.
Stamen number.—
5.
Anther color.—
Brilliant yellow (R.H.S. Colour Chart No. 153).
Anther appendage.—
Absent.
Physiological and ecological characteristics:
Flower number.—
Commonly 4-5 per cluster.
Flower fragrance.—
Absent-weak.
Fertility.—
Self fertile.
Leaf abscission.—
The leaves fall when subjected to low temperature in late autumn.
Flower abscission.—
The flowers commonly last approximately 7 to 10 days on the plant.
Flowering duration.—
Long and substantially continuous (early June to early November in Japan).
Cold tolerance.—
Low.
Heat tolerance.—
High.
Resistance to diseases.—
Medium.
Resistance to pests.—
Medium.
The
Mandevilla amabilis
‘Rose Giant’ used as the pollen parent in the obtaining of this new variety ‘Sunmandecos’ is commercially available. The Mandevilla plant
Mandevilla amabilis
‘Rose Giant’ also is presently maintained at 863-1, Aza-Iketani, Ohmori-cho, Gamou-gun, Youkaichi, Shiga, Japan. The main botanical characteristics of
Mandevilla amabilis
‘Rose Giant’ are as follows:
Plant:
Growth habit.—
Lianous.
Stem:
Stem diameter.—
6.0 mm.
Stem color.—
Dark reddish-brown (R.H.S. Colour Chart No. 183A).
Lenticel.—
Present.
Branching.—
Few.
Internode length.—
17.0 cm.
Leaf:
Phyllotaxis.—
Opposite.
Whole shape of leaf.—
Oblong.
Shape of leaf apex.—
Mucronate.
Shape of leaf base.—
Cordate.
Leaf length.—
11.0 cm.
Leaf width.—
7.0 cm.
Leaf thickness.—
0.4 mm.
Color of mature leaf upper side.—
Dark grayish-olive green (R.H.S. Colour Chart No. 139A).
Color of mature leaf reverse side.—
Moderate yellow green (R.H.S. Colour Chart No. 147B).
Variegation of mature leaf.—
Absent.
Gloss of mature leaf upper side.—
Medium.
Pubescence of mature leaf upper side.—
Present.
Pubescence of mature leaf reverse side.—
Present.
Leaf petiole length.—
1.0 cm.
Leaf petiole diameter.—
3.5 mm.
Leaf petiole color.—
Brilliant yellow green (R.H.S. Colour Chart No. 149B).
Flower:
Color of flower bud.—
Strong purplish-pink (R.H.S. Colour Chart No. 62B).
Length of peduncle.—
0.9 cm.
Peduncle color.—
Vivid yellow green (R.H.S. Colour Chart No. 149A).
Flower shape.—
Single.
Flower form.—
Perfectly open.
Flower facing direction.—
Horizontal to slanted upward.
Diameter of flower.—
10.0 cm.
Flower height.—
9.0 cm.
Floral tube length.—
5.5 cm.
Color of flower upper side.—
Deep purplish-pink (R.H.S. Colour Chart No. 155A).
Color of inside surface of corolla throat.—
Yellowish-white (R.H.S. Colour Chart No. 155D).
Color of flower outside.—
Deep purplish-pink (R.H.S. Colour Chart No. 55A).
Whole shape of petal lobe.—
Orbicular.
Shape of petal lobe apex.—
Cuspidate.
Curvature of petal.—
Outwardly curved.
Waving of petal.—
Weak.
Petal length.—
5.5 cm.
Petal width.—
6.0 cm.
Petal number.—
5.
Reproductive organs:
Pistil.—
Present.
Pistil number.—
1.
Stamen number.—
5.
Anther color.—
Bright yellow (R.H.S. Colour Chart No. 15B).
Anther appendage.—
Absent.
Physiological and ecological characteristics:
Flower number.—
5-9 per cluster.
Flower fragrance.—
Absent-weak.
Fertility.—
Absent.
Leaf abscission.—
The leaves fall when subjected to low temperature in late autumn.
Flower abscission.—
The flowers commonly last approximately 7 to 10 days on the plant.
Flowering time.—
Early.
Flowering duration.—
Long (early June to late October in Japan).
Cold tolerance.—
Low.
Heat tolerance.—
High.
Resistance to diseases.—
Medium.
Resistance to pests.—
Medium.
This new variety of
Mandevilla
plant ‘Sunmandecos’ was asexually reproduced by the use of cuttings at Suntory Flowers Ltd., located at 863-1, Aza-Iketani, Ohmori-cho, Gamou-gun, Youkaichi, Shiga, Japan, and the homogeneity and stability thereof were thereby confirmed. The new variety reproduces true to type in successive generations of asexual reproduction.
SUMMARY OF THE NEW VARIETY
This new variety of
Mandevilla
plant possesses a lianous growth habit. The blooming period is from early June to early November in Japan and the flowering duration is long. When growing conditions are above 18° C., flowering is substantially continuous. The flower diameter is large. Both surfaces of the petals and the inside surface of corolla throat are deep purplish-pink. The leaves are grayish-olive green and are gla

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