A new and distinct cultivar of Miscanthus plant named ‘MBS 7001’, characterized by its rigorous growth rate, top leaf height of about 2.7 meters, green-colored leaves, high biomass yield and high tiller density.

Patent
   PP22033
Priority
May 02 2008
Filed
May 01 2009
Issued
Jul 19 2011
Expiry
May 01 2029
Assg.orig
Entity
unknown
4
0
n/a
1. A new and distinct cultivar of Miscanthus plant named ‘MBS 7001’ substantially as herein shown and described.

Latin name of genus and species: Miscanthus spp.

Varietal denomination: ‘MBS 7001’.

The present disclosure relates to a new and distinct cultivar of hybrid Miscanthus originated as a cross from Miscanthus sacchariflorus (♀, 4n)×M. sinensis (♂, 2n) plants and will be referred to hereafter by its cultivar name, ‘MBS 7001.’ ‘MBS 700’ represents a new cultivar of Miscanthus species, a perennial grass which is grown for biomass production, landscape use and ornamental value.

‘MBS 7001’, also known as ‘Nagara’, was selected for its vigorous growth from a selection field which was established from seedlings. The seedlings were obtained from seeds of a polycross of Miscanthus sacchariflorus (♀, 4n) and M. sinensis (♂, 2n) plants. ‘MBS 7001’ is a sterile triploid plant; hence, it cannot be reproduced sexually. ‘MBS 7001’ was generated by crossing a single large-stemmed M. sacchariflorus genotype from Japan (accession No.: 93M0005064, ploidy: 4x) as a female parent with a population of 15 M. sinensis plants as pollen donors (accession Nos.: 93m0146002, 92M0179020, 92M0179017, 93M0147009, 92M0179016, 93m0146012, 93M0144001, 93m0146017, 92m0086, 92m0179015, 93m0146001, 93M0084, 93m0006005, 93M0006003, and 93m0007212; ploidy: 2x). From this cross, 158 seedlings were obtained and planted in a field. Based on field observations, one triploid variety having high biomass was selected and designated as ‘MBS 7001’.

‘MBS 7001’ of the present application is an about 95% to 100% sterile genotype, and is almost completely self and cross incompatible. Miscanthus variety ‘MBS 7002’ disclosed in the co-pending U.S. Plant patent application Ser. No. 12/387,429 is 100% fertile, and is about 95% to 100% self incompatible, and 95% to 100% cross compatible. Miscanthus variety ‘MBS 1002’ disclosed in the co-pending U.S. Plant patent application Ser. No. 12/584,496 is 100% fertile, and is about 95% to 100% self incompatible, and 95% to 100% cross compatible.

The plant was asexually reproduced from sterile rhizome buds in Klein-Wanzleben, Germany by the inventor. The shoot material was propagated on rooting media and the rooted plantlets were planted into pots in the greenhouse. The plants were planted into the field after one cold period. The characteristics of this cultivar have been determined to be stable and are reproduced true to type in successive generations.

The following traits have been repeatedly observed and represent the characteristics of the new cultivar. Plants for the botanical measurements in the present application are two and three-year-old plants. These plants would be considered as mature plants. The phenotype may vary somewhat with variations in temperature, day-length, light intensity, soil types, and water and fertility levels without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined the basic characteristics of ‘MBS 7001’, which in combination distinguish this Miscanthus hybrid from the known Miscanthus×giganteus and other ornamental M. sinensis forms.

‘MBS 7001’ can be distinguished from the Miscanthus cultivars Strictus (not patented), Super Stripe (U.S. Plant Pat. No. 18,161), Gold Bar (U.S. Plant Pat. No. 15,193), Little Zebra (U.S. Plant Pat. No. 13,008) and Mysterious Maiden (U.S. Plant Pat. No. 16,197) in that ‘MBS 7001’ has no stripes or colored bands on its leaves.

In side by side comparisons conducted in Klein-Wanzleben, Germany, ‘MBS 7001’ is more vigorous than either of its parent plants and produces more biomass than either parent. Plant height of ‘MBS 7001’ is about 20-30 cm larger than that of the M. sacchariflorus and M. sinensis parents. ‘MBS 7001’ has taller culms but demonstrates less lodging; hence it has stronger culms. It is late ripening and shows excellent winter survival. The leaves stay longer on top of the culm compared to M.×giganteus and, therefore, the leaf loss during the winter is minimized which, in turn, leads to equal or higher biomass yield. At spring harvest, ‘MBS 7001’ has lower or similar dry matter content than M.×giganteus. ‘MBS 7001’ produces dry matter biomass yield of 20-30 t/ha. ‘MBS 7001’ is sterile and produces no panicles as observed at the location in Germany.

The plant rhizome grows relatively fast and is able to cover the area between the plants within a short time. The tuft remains filled with culms compared to M.×giganteus, where the culm number in the inner tuft circle is reduced over time. The tuft diameter is around 100 cm in year 7, which is larger than that of M.×giganteus and M. sinensis.

The plant can be propagated by rhizomes, from meristem or nodes. This further distinguishes ‘MBS 7001’ from M. sinensis in that M. sinensis cannot be propagated by nodes.

The accompanying color photographs illustrate the overall appearance and distinct characteristics of the new Miscanthus cultivar ‘MBS 7001’.

The photograph in FIG. 1 was taken in mid-August, 2008 in Leamington, Ontario, Canada, and illustrates the overall growth habit and appearance of ‘MBS 7001’ eight weeks after transplanting from greenhouse-grown plants established in 2 gallon pots in a greenhouse and grown.

The photograph in FIG. 2 shows ‘MBS 7001’ growing in Leamington, Ontario, Canada, and illustrates new shoots emerging from rhizomes near the base of the main clump of tillers, and erect, flat to slightly concave leaf blades.

The photograph in FIG. 3 was taken in late fall, 2008 and illustrates the overall growth habit and appearance of ‘MBS 7001’ in Klein-Wanzleben, Germany as grown outdoors for 8 years. The ‘MBS 7001’ plants in the photo were harvested by removing above-ground biomass to above several inches above ground level every year for 7 years, and that the biomass visible in this photograph represents annual, rather than cumulative, growth.

The following observations, measurements, and comparison describe this plant as grown at Klein-Wanzleben, Germany, when grown in the field. ‘MBS 7001’ has not been observed under all possible environmental conditions, and the phenotype may vary significantly with variations in environment. All observations were recorded during the plant's dormant season (April 2008) and during the growing season 2008 unless otherwise noted. The color determination is in accordance with The 1995 R.H.S. Colour Chart of The Royal Horticultural Society, London, England, except where general color terms of ordinary dictionary significance are used. Plants for the botanical measurements in the present application are two and three-year-old plants. These plants would be considered as mature plants.

TABLE 1
2009 Average Basal Circumference comparisons (cm) for
M. x giganteus ‘Illinois’ and ‘MBS 7001’
Elora, Kemptville, Leamington, Entry
Entry ON ON ON Means
M. x giganteus ‘Illinois’ 94 59 94 83
‘MBS 7001’ 105 65 115 95
Location Means 101 64 105 90
*Data from 2 year old mature plants

TABLE 2
Average Culm Length comparisons (cm)
Elora, Kemptville, Leamington, Entry
Entry ON ON ON Mean
M. x giganteus 159 103 226 162
‘Illinois’
‘MBS 7001’ 199 89 266 185
Location Means 179 96 246 174
*Data from 2 year old mature plants

TABLE 3
Average Yield (tons/ac) comparisons in Canada*
Material Name Leamington Elora Entry Mean
‘MBS 7001’ 3.0 8.4 5.7
M. x giganteus ‘Illinois’ 1.7 4.5 3.1
Location Means 2.4 6.1 4.3
Lsd 0.05 1.3 2.8 1.8
*Data from 2 year old mature plants

TABLE 4
Average % Moisture comparisons in Canada*
Entry
Material Name Leamington Elora Mean
‘MBS 7001’ 29 41 35
M. x giganteus 36 48 42
‘Illinois’
Location Means 33 45 39
Lsd 0.05 2.3 3.8 3.2
*Data from 2 year old mature plants

M.×giganteus is also a cross between M. saccharafloris (4x) and M. sinensis (2x) resulting in a sterile clone plant selection that is available to the public. This is how ‘MBS 7001’ was derived, only using different parentage in the ploy-cross as described. Therefore M.×giganteus (3x) cv ‘Illinois clone’ is an excellent cultivar for comparison with ‘MBS 7001’. In this comparison ‘MBS 7001’ is slightly greener during the growing season than M.×giganteus across locations.

Deuter, Martin

Patent Priority Assignee Title
11589526, Jul 20 2017 DELAWARE STATE UNIVERSITY System for rapid, robust, and efficient in vitro mass propagation of Miscanthus x giganteus
PP23321, May 02 2008 Repreve Renewables, LLC Miscanthus plant named ‘MBS 0006’
PP23680, May 02 2008 Repreve Renewables, LLC Miscanthus plant named ‘MBS 1001’
PP23681, May 02 2008 Repreve Renewables, LLC Miscanthus plant named ‘MBS 7003’
Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 01 2009Mendel Biotechnology, Inc.(assignment on the face of the patent)
Jun 06 2009DEUTER, MARTINMendel Biotechnology, IncASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0228770715 pdf
May 07 2014Mendel Biotechnology, IncRepreve Renewables, LLCASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0331070132 pdf
Mar 21 2017Repreve Renewables, LLCAGGROW TECH, LLCCERTIFICATE OF AMENDMENT0422860326 pdf
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