U.S. patent number PP23,164 [Application Number 13/068,857] was granted by the patent office on 2012-11-06 for stevia plant named `akh l1`.
This patent grant is currently assigned to PureCircle Sdn Bhd. Invention is credited to Edgar Ramon Alvarez Britos.
United States Patent |
PP23,164 |
Ramon Alvarez Britos |
November 6, 2012 |
Stevia plant named `AKH L1`
Abstract
A new and distinct cultivar of stevia plant named `AKH L1`,
characterized by its combination of late harvest cycle, light green
or yellow green leaves, high number of nodes on the main stem, high
Rebaudioside A of total Glycoside Steviol content, and high
yielding of dried leaves at harvest.
Inventors: |
Ramon Alvarez Britos; Edgar
(Asuncion, PY) |
Assignee: |
PureCircle Sdn Bhd (Bandar
Enstek, MY)
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Family
ID: |
45926164 |
Appl.
No.: |
13/068,857 |
Filed: |
January 18, 2011 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20120090062 P1 |
Apr 12, 2012 |
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Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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61336506 |
Jan 22, 2010 |
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Current U.S.
Class: |
PLT/226 |
Current CPC
Class: |
A01H
5/02 (20130101) |
Current International
Class: |
A01H
5/00 (20060101) |
Field of
Search: |
;PLT/373,263.1,226,258 |
Primary Examiner: Locker; Howard
Attorney, Agent or Firm: Ballew Law
Claims
What is claimed is:
1. A new and distinct cultivar of stevia plant named `AKH L1`,
substantially as herein shown and described.
Description
Genus and species: Stevia rebaudiana (Bert.) Bertoni.
Variety denomination: `AKH L1`.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
None
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates to a new and distinct variety of
stevia (Stevia rebaudiana (Bert.) Bertoni), which has been given
the variety denomination of `AKH L1`.
The new stevia plant cultivar is a selection resulting from a
controlled breeding program of stevia plants at Guayaibi, San
Pedro, Paraguay in 2006 through the controlled pollination of seed
parent `EIRETE` (unpatented) and pollen parent `AKH/EM1`
(unpatented). The new cultivar was selected as a single plant
within a population of plants resulting from this controlled
pollination of stevia plants in 2006 at an experimental station at
Guayaibi, San Pedro, Paraguay. Selection criteria was a combination
of Rebaudioside A content equal to more than 50% of total steviol
glycols, high yield of leaves per hectare, and resistance to leaf
spot diseases. 91.5% of the Total Glycoside Steviols are present in
the leaves of the claimed variety, with the remaining 8.5% of the
Total Glycoside Steviols present in the stems and branches of the
claimed variety. The selection was subsequently evaluated for a
number of years at the Experimental Station at Guayaibi, San Pedro,
Paraguay.
Asexual reproduction of the new cultivar by cutting propagation
since 2007 at Guayaibi, San Pedro, Paraguay in field nurseries has
demonstrated that the new cultivar reproduces true to type with all
of the characteristics, as herein described, firmly fixed and
retained through successive generations of such asexual
propagation.
The new variety can be compared to the seed parent `Eirete`. In
Guayaibi, San Pedro, Paraguay the plant height of `AKH L1` is
classified as `medium size` (51-70 cm) whereas the plant height of
`Eirete` is classified as `high size` (80 cm). The harvest cycle of
`AKH L1` is `late` whereas the harvest cycle of `Eirete` is
`medium`. In Guayaibi, San Pedro, Paraguay the leaf color of `AKH
L1` is `light green or yellow green` whereas the leaf color of
`Eirete` is `dark green`. The percentage of Rebaudioside A of total
Glycoside Steviol of `AKH L1` is 89% whereas the percentage of
Rebaudioside A of total Glycoside Steviol of `Eriete` is 52%. Table
1 provides further comparisons of the distinguishing
characteristics for the claimed variety and both the seed and
pollen parents.
SUMMARY OF THE INVENTION
The following characteristics of the new cultivar have been
repeatedly observed and can be used to distinguish `AKH L1` as a
new and distinct cultivar of a stevia plant: 1. late harvest cycle
2. light green or yellow green leaf 3. many nodes on main stem 4.
medium number of basal buds 5. Stevioside content 1.3% 6.
Rebaudioside A content 11.5% 7. total of Esteviosido+Rebaudioside A
12.8% 8. 89% of Rebaoudiosido A of total Glycoside Steviol 9.
yields 4,500 kg/ha of dried leaves in three cuts
BRIEF DESCRIPTION OF THE PHOTOGRAPHS
The accompanying photographs show, as nearly true as it is
reasonably possible to make the same in color illustrations of this
type, typical flower and foliage characteristics of the new
cultivar. Colors in the photographs differ slightly from the color
values cited in the detailed description, which accurately
describes the colors of `AKH L1`.
FIG. 1 illustrates an `AKH L1` plant from roots to top of the
plant.
FIG. 2 illustrates `AKH L1` leaves.
FIG. 3 illustrates an `AKH L1` leaf, including the shape and
dimensions.
FIG. 4 illustrates the branches, without leaves, of an `AKH L1`
plant.
FIG. 5 illustrates the flowers of an `AKH L1` plant.
DETAILED BOTANICAL DESCRIPTION
The following is a detailed botanical description of a new and
distinct variety of a stevia plant known as `AKH L1`. Plant
observations were made on plants grown in Guayaibi, San Pedro,
Paraguay. Unless indicated otherwise, the descriptions disclosed
herein are based upon observations made in February 2008 of mature
`AKH L1` plants (age 6 months) grown in outdoor field plantings
with day temperature ranging from 25.degree. C. to 35.degree. C.,
night temperatures ranging from 22.degree. C. to 30.degree. C., and
light levels ranging from 20 to 25 klux. `AKH L1` has not been
observed under all possible environmental conditions. Where
dimensions, sizes, colors and other characteristics are given, it
is to be understood that such characteristics are approximations or
averages set forth as accurately as practicable. The phenotype of
the variety may vary with variations in the environment such as
season, temperature, light quality, light intensity, day length,
cultural conditions and the like. Color notations are based on The
Royal Horticultural Society Colour Chart, of The Royal
Horticultural Society, London, 2007 edition. Botanical
classification: Stevia rebaudiana (Bert.) Bertoni cultivar `AKH
L1`. Parentage: Parents.--Seed parent `Eirete` (unpatented); pollen
parent `AKH/EM1` (unpatented). Plant: Type.--Shrubby Perennial.
Growth habit.--Erect; Main stem with dominance of axillary buds and
a good development of lateral branches from the axillary buds.
Height.--51 cm to 70 cm. Number of nodes on main stem.--31 nodes.
Number of basal buds.--6 to 10 basal buds per plant. Harvest
cycle.--Late. Leaves: Length.--4.4 cm. Width.--2.0 cm.
Shape.--Lanceolate. New foliage.--Green RHS 142A. Mature
foliage.--Green RHS 141C. Upper surface mature foliage.--Green RHS
141C. Lower surface mature foliage.--Green RHS 141D. Veins.--Green
RHS 141D. Young shoots.--Green RHS 142B. Mature
shoots.--Yellow-Green RHS 144C. Leaf edge.--Moderately sawn or
scalloped. Stevioside content.--1.3%. Rebaudioside A
content.--11.5% % of Rebaudioside A of total Glycoside Steviol:
89%. Total of stevioside and rebaudioside a.--12.8%. Flowers:
Petals.--White RHS 155B. Sepals.--Green RHS N144B. Bloom
period.--Bloom dates (calculated from planting date): Start of
Blooming 120 days; Full bloom -- 135 days; End of Blooming 150
days. Pedicel length.--3-4 mm. Peduncle length.--2-4 mm. Petiole
length.--2-3 mm. Number of flowers per capitulum.--Five.
Productivity.--Yielding of dried leaves in three cuts 4,5000 kg/ha.
Cold hardiness.--Cold tolerance from -2.degree. C. Heat
tolerance.--Heat tolerance to 40.degree. C. Pathogen
resistance.--Moderately resistant to Septoria steviae. Leaf harvest
period.--Three harvests per year; October, January, and March in
Guayaibi, San Pedro, Paraguay.
TABLE-US-00001 TABLE 1 Comparison with parents Eirete AKH EM 1 AKH
L1 (Seed Parent) (Pollen Parent) Plant: height 51 cm-70 cm 80 cm 30
cm-50 cm Leaf: color light green/yellow dark green medium green
green Leaf: shape lanceolate lanceolate oval lanceolate Leaf: edge
moderately sawn strongly sawn or strongly sawn or scalloped notched
or notched Stevioside content: 1.3% 10.4% 2.1% Rebandioside A 11.5%
11.3% 9.2% content: Number of basal 6-10 buds per 6-10 buds per
6-10 buds per buds plant plant plant
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