USPP27603P2 - Mint plant named ‘Blue Mountain Mint’ - Google Patents

Mint plant named ‘Blue Mountain Mint’ Download PDF

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USPP27603P2
USPP27603P2 US14/999,509 US201614999509V USPP27603P2 US PP27603 P2 USPP27603 P2 US PP27603P2 US 201614999509 V US201614999509 V US 201614999509V US PP27603 P2 USPP27603 P2 US PP27603P2
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mint
blue mountain
plant
oil
arvensis
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Donald D. Roberts
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Essex Laboratories LLC
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Essex Laboratories LLC
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/12—Leaves
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H6/00—Angiosperms, i.e. flowering plants, characterised by their botanic taxonomy
    • A01H6/50—Lamiaceae, e.g. lavender, mint or chia
    • A01H6/504—Mentha sp., e.g. mint

Definitions

  • the present invention relates to a new and distinct variety of peppermint plant developed from a parent of the species M. arvensis .
  • the new variety will be identified as ‘Blue Mountain Mint.’
  • ‘Blue Mountain Mint’ originated as a seedling from an open pollinated commercial variety (‘Blanco’) of Mentha arvensis , included with other M. arvensis and male fertile M. piperita plants in a polycross breeding program.
  • Commercial M. piperita is sterile and only becomes fertile in the polyploidy state.
  • the parent plants in the polycross breeding system were composed of selected fertile male and female genotypes based on certain desirable characteristics.
  • This new mint was developed in a mint breeding program in which the primary objective was to develop a Mitcham type peppermint variety having a specific oil composition, acceptable yield and resistant to mint diseases.
  • the new variety is as susceptible to mint wilt (soil-borne fungus Verticillium dahliae ) as its parent, but more resistant to mint rust (air-borne fungus Puccinia menthae ).
  • ‘Blue Mountain Mint’ has a higher yield of oil than the control variety, ‘Black Mitcham,’ in test plots since 2014. This plant was selected from a population of mint seedlings in research plots on land near Monmouth, Oreg., and initially identified as 14-27-71.
  • ‘Blue Mountain Mint’ is asexually propagated to maintain the cultivar's genetic integrity and as a means of increasing the selection for commercial planting. Asexual propagation, by tip cuttings or stolon sections, is a common practice in commercial mint cultivation and serves as a means of propagating the normally sterile mint plant. The inventor has conducted asexual propagation with tip cuttings and stolon sections of ‘Blue Mountain Mint’ for greenhouse and field planting in Monmouth, Oreg., each year since 2014 and the genotype comes true to form with each generation.
  • Mint selection 14-27-71, denominated ‘Blue Mountain Mint,’ is a new Mentha sp. cultivar that produces a high yield of an essential oil similar in composition as commercially grown mint varieties.
  • the essential oil is similar to standard M. piperita oil in components composition and ratio of components. Organoleptically it is similar to typical Mentha piperita peppermint oil. It is more resistant to mint rust than current commercially grown Mentha arvensis varieties known to the Inventor.
  • FIG. 1 illustrates the flowering pattern and multiple flowering shoots of my new mint plant in accordance with the present invention.
  • FIG. 1 further illustrates the flower spike with capitate flower development at the nodes of the spike.
  • FIG. 2 illustrates the variance in leaf shape of my new mint plant depending on the location on the plant. Further, FIG. 2 illustrates the flower spike with capitate flower development at the nodes of the spike. FIG. 2 also illustrates the shape of the leaf (large leaf) collected at mid-plant and grown under greenhouse environment, whereas, the smaller leaf illustrates the shape of leaf on a terminal flowering shoot.
  • FIG. 3 illustrates the growth pattern under field management of my new mint plant in accordance with the present invention.
  • My new mint plant improves upon and is distinct from other mint plants known to the Inventor in several characteristics, including but not limited to, the following:
  • the essential oil extracted from ‘Blue Mountain Mint’ has a composition of components more like that of commercial oil produced by ‘Black Mitcham’ peppermint ( M. piperita ) than that of M. arvensis as illustrated in Table 1.
  • the ratio of oil components in ‘Blue Mountain Mint’ is different from that of its parent M. arvensis .
  • the concentration of menthol in oil of ‘Blue Mountain Mint’ is less than that of its parent ‘Blanco’ M. arvensis and M. piperita .
  • Menthofuran is present in the oil of ‘Blue Mountain Mint’ and absent in oil of its parent M. arvensis .
  • Organoleptically, the oil of ‘Blue Mountain Mint’ is the same as that of ‘Black Mitcham’ but different than that of M. arvensis , reflecting the difference in oil component ratios.
  • This new plant under greenhouse and field growing conditions, is a bush type plant with lateral branches at each node of the main stems.
  • the average height of ‘Blue Mountain Mint’ is 70-96 cm and is equal to or greater than ‘Black Mitcham’ growing under similar conditions and will vary based on fertilizer, soil quality, and water application, amongst other known factors that affect growth patterns. Secondary and tertiary branching occurs to form a compact growth habit.
  • the main stem at mid-plant (approximately between the eleventh and twelfth node) is 9.5-10.5 mm in width.
  • the secondary and tertiary branch stems are 2.5-3.5 mm.
  • the average plant width is 30 cm and the average length of the main stem is 76 cm.
  • the stems are square, glabrous, and a green color that matches Fifth Edition Royal Horticultural Society Colour Chart 143B green group.
  • Mature leaves at the bottom of the plant are ovate as are leaves on secondary branch stems. Leaves on upper mature plants, both main and secondary stems are lanceolate ( FIG. 2 ). Mid-main stem leaf size at flowering is 23-26 mm in width and 59-63 mm in length. Leaf size on secondary branches at flowering is 10-12 mm in width and 17-19 mm in length. Leaf petioles on the main stem leaves are 7-8 mm in length. Leaves on the mid-main and lower stem tend to be lanceolate and irregular denticulate while the leaves on the upper plant tend to be more dentate. The main stem leaves have from 11-13 teeth on each side while the secondary branch leaves have 4-5 teeth on each side.
  • the adaxial leaf surface is glabrous and is light green in color, ranging from The Fifth Edition Royal Horticultural Society Colour Chart 143A to 143B in the green group classification.
  • the abaxial leaf surface is sub-glabrous with oil glands distributed across the surface and is light green in color as illustrated in The Fifth Edition Royal Horticultural Society Colour Chart 143A green group.
  • the leaf has 6-9 lateral veins, more or less in parallel off the main vein that runs from the petiole to the tip of the leaf. The veins are prominent in all leaves of ‘Blue Mountain Mint.’
  • the inflorescence is a determinate spike with capitate flowers developing at the nodes of the spike stem.
  • the cylindrical spikes are about 30 mm in diameter and range from 80-100 mm in length.
  • the capitates flowers are 15-20 mm in width and 16-18 mm in length.
  • the flowers consist of five petals fused into a two lipped corolla.
  • the corolla is violet in color as illustrated in The Fifth Edition Royal Horticultural Society Colour Chart 91C to 91D in the violet-blue group.
  • the calyx is generally green and ranges between 143B and 143C of The Fifth Edition Royal Horticultural Society Colour Chart, green group.
  • the gynoecium consists of a single pistil with two lobed stigma that is exserted.
  • the androecium consists of four stamens, each with a distinct filament and anther.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Botany (AREA)
  • Developmental Biology & Embryology (AREA)
  • Environmental Sciences (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

Mint selection 14-27-71, denominated ‘Blue Mountain Mint,’ is a new Mentha sp. cultivar that produces an essential oil similar to commercial peppermint, produces more oil on a dry weight basis, and has resistance to mint rust (Puccinia menthae).

Description

Latin name of the genus and species: Mentha sp.
Variety denomination: ‘BLUE MOUNTAIN MINT’.
FEDERAL SPONSORSHIP
None
TYPE OF PLANT AND NAME OF VARIETY
The present invention relates to a new and distinct variety of peppermint plant developed from a parent of the species M. arvensis. The new variety will be identified as ‘Blue Mountain Mint.’
BACKGROUND OF INVENTION
‘Blue Mountain Mint’ originated as a seedling from an open pollinated commercial variety (‘Blanco’) of Mentha arvensis, included with other M. arvensis and male fertile M. piperita plants in a polycross breeding program. Commercial M. piperita is sterile and only becomes fertile in the polyploidy state. The parent plants in the polycross breeding system were composed of selected fertile male and female genotypes based on certain desirable characteristics.
DISCOVERY AND ASEXUAL REPRODUCTION
This new mint was developed in a mint breeding program in which the primary objective was to develop a Mitcham type peppermint variety having a specific oil composition, acceptable yield and resistant to mint diseases. The new variety is as susceptible to mint wilt (soil-borne fungus Verticillium dahliae) as its parent, but more resistant to mint rust (air-borne fungus Puccinia menthae). ‘Blue Mountain Mint’ has a higher yield of oil than the control variety, ‘Black Mitcham,’ in test plots since 2014. This plant was selected from a population of mint seedlings in research plots on land near Monmouth, Oreg., and initially identified as 14-27-71.
‘Blue Mountain Mint’ is asexually propagated to maintain the cultivar's genetic integrity and as a means of increasing the selection for commercial planting. Asexual propagation, by tip cuttings or stolon sections, is a common practice in commercial mint cultivation and serves as a means of propagating the normally sterile mint plant. The inventor has conducted asexual propagation with tip cuttings and stolon sections of ‘Blue Mountain Mint’ for greenhouse and field planting in Monmouth, Oreg., each year since 2014 and the genotype comes true to form with each generation.
SUMMARY OF THE INVENTION
Mint selection 14-27-71, denominated ‘Blue Mountain Mint,’ is a new Mentha sp. cultivar that produces a high yield of an essential oil similar in composition as commercially grown mint varieties. The essential oil is similar to standard M. piperita oil in components composition and ratio of components. Organoleptically it is similar to typical Mentha piperita peppermint oil. It is more resistant to mint rust than current commercially grown Mentha arvensis varieties known to the Inventor.
BRIEF DESCRIPTION OF THE FIGURES
The accompanying color figures show typical, one-year-old, greenhouse vegetative growth of ‘Blue Mountain Mint’ and depicts the color as nearly as reasonably possible.
FIG. 1 illustrates the flowering pattern and multiple flowering shoots of my new mint plant in accordance with the present invention. FIG. 1 further illustrates the flower spike with capitate flower development at the nodes of the spike.
FIG. 2 illustrates the variance in leaf shape of my new mint plant depending on the location on the plant. Further, FIG. 2 illustrates the flower spike with capitate flower development at the nodes of the spike. FIG. 2 also illustrates the shape of the leaf (large leaf) collected at mid-plant and grown under greenhouse environment, whereas, the smaller leaf illustrates the shape of leaf on a terminal flowering shoot.
FIG. 3 illustrates the growth pattern under field management of my new mint plant in accordance with the present invention.
 DESCRIPTION OF PLANT
My new mint plant improves upon and is distinct from other mint plants known to the Inventor in several characteristics, including but not limited to, the following:
    • 1. It increases yield of an essential oil similar in composition to typical commercial M. piperita known to the Inventor;
    • 2. Produces more oil on a dry weight basis than currently grown mint varieties known to the Inventor;
    • 3. A more vigorous plant growth with a branching pattern similar to its parent;
    • 4. An early spring growth similar to ‘Black Mitcham’ peppermint but with an earlier maturity for desirable chemical composition of its essential oil;
    • 5. A level of resistance to mint rust and mint wilt equal to or greater than that of its M. arvensis female parent;
The essential oil extracted from ‘Blue Mountain Mint’ has a composition of components more like that of commercial oil produced by ‘Black Mitcham’ peppermint (M. piperita) than that of M. arvensis as illustrated in Table 1. However, the ratio of oil components in ‘Blue Mountain Mint’ is different from that of its parent M. arvensis. The concentration of menthol in oil of ‘Blue Mountain Mint’ is less than that of its parent ‘Blanco’ M. arvensis and M. piperita. Menthofuran is present in the oil of ‘Blue Mountain Mint’ and absent in oil of its parent M. arvensis. Organoleptically, the oil of ‘Blue Mountain Mint’ is the same as that of ‘Black Mitcham’ but different than that of M. arvensis, reflecting the difference in oil component ratios.
TABLE 1
A Comparison of ‘Blue Mountain Min’ Essential Oil collected from
test plots near Monmouth, Oregon, to that of its M. arvensis parent,
Commercial M. arvensis, and Commercial M. piperita Oils. 1/
Mentha
arvensis Blue
Essential Oil Parent Mountain Commercial Commercial
Components Seedling Mint Seedling M. arvensis M. piperita
1-Limonene 3.0 1.7 3.0 1.7
1,8-Cineole <1.0 4.9 <1.0 4.9
1-Menthone 15.7 18.5 7.3 19.4
Menthofuran 0.0 6.7 0.0 4.2
Isomenthone 3.5 2.4 3.6 3.1
1-Menthyl 3.7 6.5 2.9 5.3
Acetate
1-Menthol 64.3 40.4 73.9 44.6
Pulegone <1.0 1.3 0.0 2.1
The numbers listed in the above table are percentages based upon the analysis of the respective mint oils by gas chromatography. The percentages are determined by calculation of the relative peak areas.
1/ Commercial oils of M. arvensis and M. piperita were samples of what is typically produced by mint growers. The essential oil from M. arvensis parent seedling and ‘Blue Mountain Mint’ were collected from plants growing in test plots in 2014.
TAXONOMIC DESCRIPTION OF ‘BLUE MOUNTAIN MINT’
This new plant, under greenhouse and field growing conditions, is a bush type plant with lateral branches at each node of the main stems. The average height of ‘Blue Mountain Mint’ is 70-96 cm and is equal to or greater than ‘Black Mitcham’ growing under similar conditions and will vary based on fertilizer, soil quality, and water application, amongst other known factors that affect growth patterns. Secondary and tertiary branching occurs to form a compact growth habit. When ‘Blue Mountain Mint’ is mature and ready for harvest, the main stem at mid-plant (approximately between the eleventh and twelfth node) is 9.5-10.5 mm in width. The secondary and tertiary branch stems are 2.5-3.5 mm. The average plant width is 30 cm and the average length of the main stem is 76 cm. The stems are square, glabrous, and a green color that matches Fifth Edition Royal Horticultural Society Colour Chart 143B green group.
Mature leaves at the bottom of the plant are ovate as are leaves on secondary branch stems. Leaves on upper mature plants, both main and secondary stems are lanceolate (FIG. 2). Mid-main stem leaf size at flowering is 23-26 mm in width and 59-63 mm in length. Leaf size on secondary branches at flowering is 10-12 mm in width and 17-19 mm in length. Leaf petioles on the main stem leaves are 7-8 mm in length. Leaves on the mid-main and lower stem tend to be lanceolate and irregular denticulate while the leaves on the upper plant tend to be more dentate. The main stem leaves have from 11-13 teeth on each side while the secondary branch leaves have 4-5 teeth on each side. The adaxial leaf surface is glabrous and is light green in color, ranging from The Fifth Edition Royal Horticultural Society Colour Chart 143A to 143B in the green group classification. The abaxial leaf surface is sub-glabrous with oil glands distributed across the surface and is light green in color as illustrated in The Fifth Edition Royal Horticultural Society Colour Chart 143A green group. The leaf has 6-9 lateral veins, more or less in parallel off the main vein that runs from the petiole to the tip of the leaf. The veins are prominent in all leaves of ‘Blue Mountain Mint.’
The inflorescence is a determinate spike with capitate flowers developing at the nodes of the spike stem. The cylindrical spikes are about 30 mm in diameter and range from 80-100 mm in length. The capitates flowers are 15-20 mm in width and 16-18 mm in length. The flowers consist of five petals fused into a two lipped corolla. The corolla is violet in color as illustrated in The Fifth Edition Royal Horticultural Society Colour Chart 91C to 91D in the violet-blue group. The calyx is generally green and ranges between 143B and 143C of The Fifth Edition Royal Horticultural Society Colour Chart, green group. The gynoecium consists of a single pistil with two lobed stigma that is exserted. The androecium consists of four stamens, each with a distinct filament and anther.
While the plant that comprises the present invention has been described in connection with a specific embodiment thereof, it will be understood that this application is intended to cover any variation, uses, or adaptation of the invention (particular those induced by cultivation under different environmental conditions) following, in general the principles of the invention and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains and as may be applied to the essential features hereinbefore set forth, and as fall within the scope of the invention and the limits of the appended claim.

Claims (1)

I claim:
1. A new and distinct variety of peppermint plant, substantially as shown and described, characterized particularly by improved resistance to mint rust and a high yield of essential oil.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018211420A1 (en) 2017-05-15 2018-11-22 Firmenich Sa Compositions comprising essential oils

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
Dung, Jeremiah K. S., et al., "Evaluation of Verticillium wilt resistance in Mentha arvensis and M. longifolia genotypes," Plant Disease, Oct. 2010, vol. 94, pp. 1255-1260.
Gobert, V., "Hybridization in the section Mentha (Lamiaceae) inferred from AFLP markers," Am. J. Bot., Dec. 2002, 89 (12), pp. 2017-2023.
Roberts, D. D. and C. E. Horner, "Sources of resistance to Puccinia menthae in mint," Plant Disease, 1981, vol. 65(4), pp. 322-324.
Rohloff, Jens, "Monoterpene composition of essential oil from peppermint (Mentha piperita L.) with regard to leaf position using solid-phase microextraction and gas chromatography/mass spectrometry analysis;" J. Agric. Food Chem., 1999, 47(9), pp. 3782-3786.
Rohloff, Jens, et al., "Effect of harvest time and drying method on biomass production, essential oil yield, and quality of peppermint (Mentha piperita L.);" J. Agric. Food Chem., 2005, 53(10), pp. 4143-4148.
Verma, R. S., et al., "Essential oil composition of Menthol mint (Mentha arvensis) and peppermint (Mentha piperita) cultivars at different stages of plant growth from Kumaon Region of Western Himalaya," J. Medicinal and Aromatic Plants, 2010, vol. 1(1), pp. 13-18.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018211420A1 (en) 2017-05-15 2018-11-22 Firmenich Sa Compositions comprising essential oils

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