Plants – Commercial herbaceous vegetable or herb plant – Mint
Plant Patent
2001-11-06
2003-04-08
Campell, Bruce R. (Department: 1661)
Plants
Commercial herbaceous vegetable or herb plant
Mint
Plant Patent
active
PP013720
ABSTRACT:
LATIN NAME OF THE GENUS AND SPECIES OF THE PLANT CLAIMED
Mentha×aquatica
L. ‘Aquamint’.
VARIETY DENOMINATION
‘Aquamint’.
Selection 81-019-16 is a new
Mentha×aquatica
L. plant that has resistance to mint wilt (
Verticillium dahliae
) and mint rust (
Puccinia×menthae
) and has a more upright growth habit than its seed parent. I have named my new cultivar ‘Aquamint.’ The growth and biomass production of 81-019-16 under field conditions resembles that of ‘Black Mitcham’ peppermint (
Mentha×piperita
L.). The oil produced by this plant has the same components as commercial peppermint but in different concentration ratios. The major components of the oil from 81-019-16 are menthofuran, and pulegone.
This new mint was discovered in a mint breeding program in which the primary objective was to develop a mint with a high concentration of menthofuran and other chemical components common in peppermint oil. The oil from this plant was designed to be blended with mint oils low in menthofuran and other components to improve their quality. The secondary objective of the program was to introduce resistance to the mint diseases, Rust caused by
Puccinia menthae
and Wilt caused by
Verticillium dahliae
. The new plant was discovered in a cultivated area on land near Corvallis, Oreg., and was initially identified as 81-019-16.
Selection 81-019-16 originated as a seedling from a polycross where the female (seed) parent was a
Mentha aquatica
L. plant identified as M-0100 (proprietary, unpatented) in our germplasm collection. Parent M-0100 is male sterile and rarely, but occasionally, outcrosses with other Mentha species. The pollen parent is unknown, but the pollinator in the polycross came from other Mentha species (proprietary, unpatented) plants in our collection. Seedlings that developed from seeds collected from the female parent were planted in observation plots where plant vigor and disease development were recorded. Selected seedlings were harvested for oil collection. Selection 81-019-16 was found to have the characteristics of vigorous growth, disease resistance and an oil composition that satisfied the objectives of the breeding program.
Asexual reproduction of 81-019-16 was conducted each year under my direction since 1981 at a research farm and greenhouses near Corvallis, Oreg. Asexual reproduction has been conducted by rooting stem cuttings and by planting stolon taken from field grown plants. Characteristics of 81-019-16 in so far as they have been observed are firmly fixed, come true-to-form and are established and transmitted in succeeding generations through vegetative propagation.
REFERENCES:
Aviv, D. And E. Galun, “Biotransformation of Monoterpenes by Mentha Cell Lines: Conversion of Pulegone to Isomenthone,”Planta Medica33:70-77 (1978).
Hefendehl, F. W. and Merritt J. Murray, “Changes in Monoterpene Composition inMentha aquaticaProduced by Gene Substitution,”Phytochemistry 11:189-195 (1972).
Nigam, Ishwar C. and Leo Levi, “Essential Oils and Their Constituents XX, Detection and Estimation of Menthofuran inMentha arvensisand Other Mint Species by Coupled Gas-Liquid—Thin-Layer Chromatography,”Journal of Pharmaceutical Sciences 53:1008-1013 (1964).
Roberts, D. D. and C. E. Horner, “Sources of Resistance toPuccinia menthaein mint,”Plant Disease 65:322-324 (1981).
Stace, Clive, “New Flora of the British Isles,” Cambridge University Press, Family Lamiaceae, Genera Mentha, pp. 680-686 (1991).
Campell Bruce R.
Hwu June
Klarquist & Sparkman, LLP
Premier Botanicals Limited
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