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Publication Number
US-12369544-B2
Publication Date
2025-07-29
Expiration Date
Abstract
A rice cultivar designated ARoma 22 is disclosed herein. The present invention provides seeds, plants, and plant parts derived from rice cultivar ARoma 22. Further, it provides methods for producing a rice plant by crossing ARoma 22 with itself or another rice variety. The invention also encompasses any rice seeds, plants, and plant parts produced by the methods disclosed herein, including those in which additional traits have been transferred into ARoma 22 through the introduction of a transgene or by breeding ARoma 22 with another rice cultivar.
Core Innovation
The disclosure is directed to a rice cultivar designated “ARoma 22” and to a rice seed of the cultivar. A representative sample of the seed of the cultivar has been deposited under National Center for Marine Algae and Microbiota International Depository Authority Accession No. 202305001 under the Budapest Treaty. The disclosure includes physiological and morphological characteristics associated with plants having the “ARoma 22” cultivar identity, as well as plants derived from the cultivar.
The disclosure further describes producing plants and plant materials from the cultivar through crossing “ARoma 22” with itself or another rice line, including selfing, backcrossing, and hybrid production. It also includes gene-converted plants in which a transgene is introduced or transferred via breeding, and plant parts derived from such plants. The disclosed scope includes generations and selectable progeny that retain “ARoma 22” cultivar characteristics.
Cultivar development background is described by using cross pedigree information and field or trial designations including ARPT 2020–2021 and URRN 2019–2021. Key agronomic and grain-quality traits are described, including mid-season heading of about 88 days and a higher 2-acetyl-1-pyrroline (2AP) aroma level, along with straw strength and yield and milling results, amylose and gelatinization-related parameters, and whiteness/chalk ratings. Disease reaction profiles are also described for multiple pathogens.
Claims Coverage
The claims coverage includes one independent claim directed to a deposited representative sample of a rice seed of the cultivar “ARoma 22,” with additional inventive features refined in dependent claims covering specific biological materials and cultivar-conversion approaches, including gene-converted plants and trait-introduction workflows.
Deposited representative sample of ARoma 22 seed
A rice seed of the cultivar ‘ARoma 22,’ where a representative sample of seed has been deposited under National Center for Marine Algae and Microbiota International Depository Authority Accession No. 202305001.
Crossing and progeny selection retaining ARoma 22 characteristics
Crossing ‘ARoma 22’ with another rice line, selecting progeny plants, and backcrossing selected progeny to the ‘ARoma 22’ parental line to produce further progeny plants.
Three or more successive backcross generations with selection
Repeating steps of crossing/selecting and backcrossing/selection for three or more successive backcross generations in which new progeny plants are selected that express the desired trait.
Transgene transformation into rice plants or cells
Transforming a rice plant or a cell thereof with a transgene that provides one or more selected traits including herbicide resistance, insect resistance, resistance to bacterial, fungal, or viral disease, modified fatty acid metabolism, modified carbohydrate metabolism, or male sterility.
Herbicide-resistant rice plants with specified herbicide categories
Producing a herbicide-resistant rice plant in which the inserted gene provides resistance to a herbicide chosen from a listed group including glyphosate, sulfonylurea, imidazolinone, dicamba, glufosinate, phenoxy proprionic acid, L-phosphinothricin, cyclohexone, cyclohexanedione, triazine, 2,4-Dichlorophenoxyacetic acid, HPPD inhibitors, and benzonitrile.
Tissue culture from regenerable cells or protoplasts
Producing a tissue culture using regenerable cells or protoplasts derived from the rice plant.
Pollen grain or ovule derived from the cultivar plant
Providing a pollen grain or an ovule from the plant described in the referenced claim.
Overall, the claims coverage is anchored by a deposited representative sample of ‘ARoma 22’ seed and is broadened through dependent features covering reproductive materials (pollen/ovule), tissue culture derived from regenerable cells or protoplasts, and trait introduction approaches that include both breeding-based crossing/backcrossing with selection and transgene transformation for defined trait categories.
Stated Advantages
Documented Applications
No documented applications found
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