Hybrid tea rose plant named `Light Carola`

Abstract

A new and distinct rose plant of the hybrid tea class named `Light Carola`. The plant is characterized by vigorous growth, non-fragrant flowers with red (RHS 47 A - 57 B) petals, early and prolific flower production, and fast and good propagating features.

Description

CROSS REFERENCE TO RELATED PATENTS

The new and distinct cultivar described and illustrated herein is related to the cultivar `Carola`, the subject of U.S. Plant Pat. No. 8,290, issued Jul. 6, 1993, which in turn is a mutation of `Deladel` (`Mme. G. Delbard`), the subject of U.S. Plant Pat. No. 4,391, issued Mar. 6, 1979.

FIELD OF THE INVENTION

The present invention is concerned with a new variety of a Hybrid Tea rose discovered by me and being a mutation of `Carola`, U.S. Plant Pat. No. 8,290, issued Jul. 6, 1993.

BACKGROUND OF THE INVENTION

This mutation was discovered as a branch on a `Carola` plant in 1993 on a cultivated area in a farm, located in Moshav Ha'yogev, located in Izra'el Valley, Israel, with an average night temperature of 25°C in summer and 0°-5°C in winter.

The branch was vegetatively propagated from cuttings by self-rooting. From these cuttings plants were grown in a greenhouse where they were further vegetatively propagated from cuttings by self-rooting.

The resulting plants were found to be stable in their botanical characteristics, as are described below and as illustrated by typical plants parts in the attached photographs.

Asexual propagation of this new variety was performed at Moshav Ha'yogev, Israel.

The presently claimed cultivar was a natural mutation of the cultivar `Carola`.

All color definitions in this application are taken from The Royal Horticultural Society of London, England (R.H.S.), Colour Chart.

The data in the following table of comparison is based on observations made in the greenhouse at Moshav Ha'yogev, where plants were grown side-by-side, under the same conditions and under the same roof. The following observations were made between the present invention and the parent plant.

______________________________________
Prickle(s): `CAROLA`      `LIGHT CAROLA`
______________________________________
shape: upper side
concave to    straight
straight
Leaf:
size (mm):
length      140-170       140-160
width       110-150       100-130
Petiole:
length (mm) ca. 20        20-25
Foliage:
young: color of
RHS 144B      RHS 141B
upper side  yellow-green  light green
mature: color of
red-green     green
lower side
Flowering stem:
length (cm) 70-80         60-80
color       medium green  green
Flower:
diameter (mm)
ca. 110       ca. 100
number of petals
33-40         28-39
Sepal:
length (mm) 40-55         35-48
Petal:
size (mm):
length      50-60         40-60
width       55-65         40-50
color of upper side
RHS 53A dark red
RHS 47A/57B red
color of basal spot
RHS 155D white
RHS 155A white
color of lower side
RHS 53C dark red
RHS 52A red
______________________________________

SUMMARY OF THE INVENTION

The present invention provides a Hybrid Tea rose variety which includes the following characteristics which distinguish the new variety from the cultivar `Carola`, to which it is related, and for which the following differences have been noted:

Distinctly different in the following:

Prickles: Shape of upper side.

Leaf: Size.

Petiole: Length.

Foliage: Color.

Flower: Diameter, number of petals.

Sepal: Length.

Petal: Size, color, color of basal spot.

The relationship of the presently claimed cultivar to other related cultivars as follows: ##STR1##

The following table of comparison present the differences between the cultivars in the family:

______________________________________
U.S. Plant                        `LIGHT `SEE-
Patent/ `DELA-    `CARO-          CARO-  MORE`
Applica-
DEL`      LA`      `ODEM` LA` 08/
08/
tion    4,391     8,290    8,620  323,076
322,487
______________________________________
Plant:
growth  upright   upright  semi-  upright
semi-
habit                      upright       upright
Stem:
color:  green-    corky    green- green- green-
mature  brown,             brown  brown, brown
corky              corky
Young             strong   medium strong medium
shoot:                     to            to
antho-                     strong        strong
cyanin
coloration
hue of  no data   red-     purple red-   red-
antho-            brown           brown  brown
cyanin
coloration
Prick-
le (s):
size:
length  no data   5        5      4.5    5
(mm)
height  no data   6        6      5.5    6
(mm)
shape:  long base concave  concave
straight
concave
upper   hooked    to                     to
side    downward  straight               straight
short
prick-
les:
quantity
many      58       none   59     none
per 10 cm
at center
of stem
long
prick-
les:
quantity
many      8        7      9      8
per 10 cm
at center
of stem
Leaf:
size:
length  no data   140-170  120-150
140-160
120-150
(mm)
width   no data   110-150  75-115 100-130
75-115
(mm)
green   no data   medium   medium medium medium
color             to dark         to dark
glossiness
no data   absent   weak   absent weak
of upper          to very         to very
side              weak            weak
Leaflet:
cross   oval      slightly straight
slightly
straight
section pointed   convex          convex
often
curved
with
convex
upper
surface
undulation
no data   absent   weak   absent weak
of margin         to very  to     to very
to
weak     medium weak   medium
Terminal
leaflet:
width:  no data   ca. 35   30-43  ca. 33-38
30-43
(mm)
blade:  no data   ca. 60   50-65  ca. 60 50-65
length
(mm)
Petiole:
length  color:    ca. 20   15-20  ca. 20-25
15-20
(mm)    green     hairy    smooth smooth hairy
rachis
Foliage:
young:  light     144B     145B   141B   141B
color   brown     yellow-  yellow-
light  light
of upper          green    green  green  green
side (RHS)
mature: green     red-     red-   green  green
color of          green    green
lower side
Flowering
stem:
length  70-90     70-80    40-60  60-80  40-70
(cm)
color   no data   medium   green  green  light
green                  green
Flower
pedicel:
number of
no data   few      very   few    very
hairs or                   few to        few to
prickles                   few           few
Flower
bud:
longi-  pointed   circular ovoid  circular
ovoid
tudinal ovoid
section
Flower:
diameter
average   ca. 110  ca. 80 ca. 100
ca. 80
(mm)    102-114
size of no data   large    medium large  medium
bloom
height  no data   50-70    30-50  50-70  30-50
(mm)
fading  none to   none     slight none   fading
with age
end of             fading        begins
third day          begins        after
after         7-10
7-10          days
days
view from
rounded   rounded  rounded
rounded
rounded
above             to star         to star
shaped          shaped
number of
30-35     33-40    40-43  28-39  43-58
petals
life (days):
no data   20-30    15-20  20-30  17-21
on the
plant
in a vase
no data   12-15    15-18  12-15  12-15
Sepal:
length  no data   40-55    30-43  35-48  30-43
(mm)
extensions
slight    strong   medium strong medium
Petal:
size:
length  no data   50-60    37-45  40-60  37-45
(mm)
width   no data   55-65    39-49  40-50  39-49
(mm)
upper   Blood     RHS 53A  RHS    RHS    RHS
side:   red       dark     46AB   47A/57B
57A/58B
color             red      dark red
red    purple
Currant       red
red
basal spot
very      medium   small  medium small
at base of
small
petal: size
color   yellow    RHS      RHS 3B RHS    RHS 3B
155C     yellow 155A   yellow
white           white
lower   Blood     RHS 53C  RHS 52A
RHS 52A
RHS 55D
side:   red       dark     deep   red    whitish-
color             red      red           purple,
Crimson       very light
purple
reflexing
strong    strong   medium strong medium
of margin
undulation
no data   weak     very   weak   very
of margin                  weak to       weak to
weak          weak
Stamen: yellow    purple   orange-
purple yellow-
predominant                red           orange
color of
filament
Style:
hairiness of
no data   medium   absent medium absent
upper half
Stigma:
position as
no data   above    same   above  above
compared with              level
anthers
color   Amber     RHS 4C   RHS    RHS 4C RHS 4D
yellow    light    155C   light  light
yellow   white  yellow yellow
Seed
Vessel:
size:   no data   medium   small  medium small
length  no data   11       8      11     8
(mm)
diameter
no data   12       11     12     7
(mm)
shape of
no data   pitcher  funnel pitcher
funnel
longitudinal      shaped   shaped shaped shaped
section
Anthers:
color   yellow    red      yellow red    light
yellow
Filament:
color   yellow-   yellow-  pink   yellow-
yellow
red       red      margin:
red
orange
______________________________________

BRIEF DESCRIPTION OF THE DRAWINGS

Sheet 1 represents a typical specimen of the present invention, illustrating a flower bud at picking stage, a part of the stem, leaflets, and flowers at various opening stages;

Sheet 2 represents a side-by-side comparison of the flower size, bud size and color of petal between a typical specimen of the present invention, `Light Carola` (on the left) and the parent variety, `Carola` (on the right); and

Sheet 3 represents another side-by-side comparison of various flower parts between a typical specimen of the present invention, `Light Carola` (on the left) and the parent variety, `Carola` (on the right).

The colors in the drawings are as true as is reasonably possible in an illustration, depicting green and red colors. The plants illustrated in Sheets 2 and 3 were grown under exactly the same conditions, in a greenhouse at Moshav Ha'yogev, each on its own roots, and being visibly healthy.

BOTANICAL DESCRIPTION

The following observations were made in Moshav Ha'yogev Israel in 1993 in a greenhouse:

Plant:

Form.--Bush.

Growth habit.--Upright.

Height (cm).--150-200.

Spread (cm).--Ca. 80.

Wood:

Color.--Mature, Light brown.

Bark.--Color: young, Green.

Mature, Light brown.

Stem:

Color.--Young, R.H.S. 143 B/152 B, green-yellow green. Mature, RHS 143 A green.

Young shoot:

Anthocyanin coloration.--Strong.

Hue of anthocyanin coloration.--Red-brown.

Prickle(s): Present.

Size.--Length (mm): ca. 4.5. Height (mm): ca. 5.5.

Shape.--Upper side: straight. Lower side: concave.

Color.--Young: Bases: R.H.S. 173 B grey orange. upper part: R.H.S. 144 B yellow green. Mature: bases: R.H.S. 173 A/176 grey orange. upper part: R.H.S. 152 BC yellow green.

Short prickles:

Quantity.--Many.

Number per 10 cm at center of stem.--Many (59).

Long prickles:

Number per 10 cm at center of stem.--Few (9).

Leaf:

Size.--Length (mm): 140-160. Width (mm): 100-130.

Green color.--Medium to dark.

Glossiness of upper side.--Absent to very weak.

Number of leaflets in the compound leaf.--3, 5, or 7.

Leaflet:

Cross section.--Slightly convex.

Undulation of margin.--Absent to very weak.

Margin.--Serrated.

Terminal leaflet:

Length of blade (mm).--Ca. 60.

Maximum width (mm).--Ca. 33-38.

Shape of base.--Rounded.

Petiole:

Length (mm).--Ca. 20-25.

Rachis.--Straight, flat, smooth.

Color.--R.H.S. 144 A, yellow green.

Foliage:

Color.--Young: upper side: R.H.S. 165 A, grey orange. Lower side: R.H.S. 178 A/183 B, grey-red purple. Mature: upper side: R.H.S. 137 A/147 A, green-yellow green. Lower side: R.H.S. 137 C/147 B, green-yellow green.

Stipule: Stitched, split tip.

Bloom:

Borne.--Multiply/in a Cluster.

Flowering shoot:

Number of flowers (after the other flower buds are pinched off).--Few (3-5).

Flowering habit: Continuous.

Flowering stem:

Length (mm).--Ca. 60-80.

Color.--Green.

Flower pedicel:

Number of hairs or prickles.--Few.

Flower bud:

Longitudinal section.--Circular.

Size.--Large (50-70 mm).

Flower:

Type.--Double.

Diameter.--Ca. 100 mm.

Fragrance.--None.

View from above.--Rounded to starshaped.

Side view.--Upper side: Flattened-convex. Lower side: flat.

Number of petals.--28-39.

Life.--on the plant: 20-23 days. In a vase: 12-15 days.

Fading with age.--None.

Petal:

Size.--Length (mm): ca. 60-40.

Width (mm): ca. 40-50.

Shape.--Rounded.

Color.--upper side.--Middle zone: R.H.S. 47A/57B red. Marginal zone: R.H.S. 47A/57B red. Basal spot: present. Basal spot: size: medium. color: R.H.S. 155A white.

Color.--lower side.--Middle zone: R.H.S. 52A red. Marginal zone: R.H.S. 52A red. Basal spot: present. Basal spot: color: white.

Reflexing of margin.--Strong.

Undulation of margin.--Weak.

Sepal:

Color.--Upper side: R.H.S. 144 AB, yellow green. Lower side: R.H.S. 144 A, yellow green.

Length (mm).--Ca. 35-48.

Extensions.--Strong.

Color.--Upper side: green-yellow, white hairs. Lower side: green-yellow.

Stamen:

Predominant color of filament.--Purple.

Style:

Length.--Long.

Predominant color.--Purple.

Hairiness of upper half.--Medium.

Stigma:

Position as compared wtih anthers.--Above.

Color.--R.H.S. 4C light yellow.

Seed vessel:

Size.--medium.

Length (mm).--Ca. 11.

Diameter (mm).--Ca. 12.

Shape of longitudinal section.--Pitcher shaped.

Color.--White-yellow.

Description.--Long, hairy.

Pollen:

Color.--Red-yellow.

Anthers:

Color.--Red.

Quantity.--Many.

Arrangement.--Peripheral.

Filament:

Color.--Yellow-red.

Time from planting to beginning of flowering: Approx. 4 months.

Self-rooting: Very good.

The cultivar is intended as and is suitable as a greenhouse rose. The cultivar bears blooms multiply. Blooms may be borne in a cluster.

When reference is made herein to "Number of flowers few," it is understood that such refers to 3, 4 or 5 flowers per cluster (i.e., the flowers that are left on the flowering shoot after the other flowers were pruned off). In addition, the term "fast" represents: within one month from insertion (of the cutting into the bedding) to a commercial plant. The term "good" represents: about 60-70% success in propagation.

Claims

1. A new and distinct rose plant of the hybrid tea class named `Light Carola` as shown and described; said plant being characterized by vigorous growth, non-fragrant flowers with red (R.H.S. 47 A-57 B) petals, early and prolific flower production, and fast and good propagating features.