US-12616114-B2 - Rice cultivar designated ‘PVL03’

Abstract

The herbicide-tolerant rice cultivar designated ‘PVL03’ and its hybrids and derivatives are disclosed.

Inventors

• Adam Famoso

Assignees

• BOARD OF SUPERVISORS OF LOUISIANA STATE UNIVERSITY AND AGRICULTURAL AND MECHANICAL COLLEGE

Dates

Publication Date

20260505

Application Date

20210924

Claims (20)

1. 1 . A rice plant of the variety ‘PVL03,’ a representative sample of seeds of said variety ‘PVL03’ having been deposited under NCMA Accession No. 202009005; or an F 1 hybrid of the variety ‘PVL03,’ wherein said F 1 hybrid expresses ACCase herbicide resistance.
2. 2 . The rice plant of claim 1 , wherein said plant is a rice plant of the variety ‘PVL03’.
3. 3 . A rice seed of the rice plant of claim 2 , or a rice seed which, if grown, will produce said rice plant.
4. 4 . The rice plant of claim 1 , wherein said rice plant is an F 1 hybrid of the variety ‘PVL03’.
5. 5 . An F 1 hybrid seed of the rice variety ‘PVL03’ which, if grown, will produce the rice plant of claim 4 .
6. 6 . A rice seed of the rice plant of claim 1 , or a rice seed which, if grown, will produce said rice plant.
7. 7 . The seed of claim 6 , wherein said seed is treated with an ACCase-inhibiting herbicide.
8. 8 . The seed of claim 7 , wherein the ACCase-inhibiting herbicide comprises an aryloxyphenoxy herbicide.
9. 9 . The seed of claim 7 , wherein the ACCase-inhibiting herbicide comprises a cyclohexanedione herbicide.
10. 10 . Pollen of the plant of claim 1 .
11. 11 . An ovule of the plant of claim 1 .
12. 12 . A composition comprising a product prepared from the rice plant of claim 2 .
13. 13 . A tissue culture of regenerable cells or protoplasts produced from the rice plant of claim 1 .
14. 14 . The tissue culture of claim 13 , wherein said regenerable cells or protoplasts are produced from a tissue selected from the group consisting of embryos, meristematic cells, pollen, leaves, anthers, roots, root tips, flowers, seeds, and stems.
15. 15 . A method for producing rice plants, said method comprising planting a plurality of rice seeds of the rice plant of claim 1 , or a plurality of rice seeds which, if grown, will produce said rice plant, under conditions favorable for the growth of rice plants.
16. 16 . The method of claim 15 , additionally comprising the step of applying herbicide in the vicinity of the rice plants, wherein the herbicide normally inhibits acetyl-CoA carboxylase, at a level of the herbicide that would normally inhibit the growth of a rice plant.
17. 17 . The method of claim 16 , further comprising applying the herbicide to weeds in the vicinity of the rice plants.
18. 18 . The method of claim 16 , wherein the herbicide comprises an aryloxyphenoxy herbicide.
19. 19 . The method of claim 16 , wherein the herbicide comprises a cyclohexanedione herbicide.
20. 20 . The method of claim 16 , wherein the herbicide comprises at least one of quizalofop, quizalofop-P, quizalofop-P-ethyl, quizalofop-P-tefuryl, haloxyfop, haloxyfop-P, fluazifop, cycloxydim, sethoxydim, tepraloxydim, or mixtures thereof.

Description

This is the United States national stage of international application PCT/US2021/051,851, international filing date Sep. 24, 2021, which claims the benefit of the Sep. 29, 2020 filing date of U.S. provisional patent application Ser. No. 63/084,637 under 35 U.S.C. § 119(e). TECHNICAL FIELD This invention pertains to the rice cultivar designated ‘PVL03,’ and to hybrids of, and cultivars derived from the rice cultivar designated ‘PVL03.’ BACKGROUND ART Rice is an ancient agricultural crop, and remains one of the world's principal food crops. There are two cultivated species of rice: Oryza sativa L., the Asian rice, and O. glaberrima Steud., the African rice. Oryza sativa L. constitutes virtually all of the world's cultivated rice and is the species grown in the United States. The three major rice-producing regions in the United States are the Mississippi Delta (Arkansas, Mississippi, northeast Louisiana, southeast Missouri), the Gulf Coast (southwest Louisiana, southeast Texas); and the Central Valley of California. See generally U.S. Pat. No. 6,911,589. Rice is a semiaquatic crop that benefits from flooded soil conditions during part or all of the growing season. In the United States, rice is typically grown on flooded soil to optimize grain yields. Heavy clay soils or silt loam soils with hard pan layers about 30 cm below the surface are typical rice-producing soils, because they reduce water loss from soil percolation. Rice production in the United States can be broadly categorized as either dry-seeded or water-seeded. In the dry-seeded system, rice is sown into a well-prepared seed bed with a grain drill or by broadcasting the seed and incorporating it with a disk or harrow. Moisture for seed germination comes from irrigation or rainfall. Another method of dry-seeding is to broadcast the seed by airplane into a flooded field, and then promptly drain the water from the field. For the dry-seeded system, when the plants have reached sufficient size (four- to five-leaf stage), a shallow permanent flood of water 5 to 16 cm deep is applied to the field for the remainder of the crop season. Some rice is grown in upland production systems, without flooding. One method of water-seeding is to soak rice seed for 12 to 36 hours to initiate germination, and then to broadcast the seed by airplane into a flooded field. The seedlings emerge through a shallow flood, or the water may be drained from the field for a short time to enhance seedling establishment. A shallow flood is then maintained until the rice approaches maturity. For both the dry-seeded and water-seeded production systems, the fields are drained when the crop is mature, and the rice is harvested 2 to 3 weeks later with large combines. In rice breeding programs, breeders typically use the same production systems that predominate in the region. Thus, a drill-seeded breeding nursery is typically used by breeders in a region where rice is drill-seeded, and a water-seeded nursery is typically used in regions where water-seeding prevails. Rice in the United States is classified into three primary market types by grain size, shape, and endosperm composition: long-grain, medium-grain, and short-grain. Typical U.S. long-grain cultivars cook dry and fluffy when steamed or boiled, whereas medium- and short-grain cultivars cook moist and sticky. Long-grain cultivars have been traditionally grown in the southern states and generally receive higher market prices in the U.S. Although specific breeding objectives vary somewhat in different regions, increasing yield is a primary objective in all programs. Grain yield depends, in part, on the number of panicles per unit area, the number of fertile florets per panicle, and grain weight per floret. Increases in any or all of these components may help improve yields. Heritable variation exists for each of these components, and breeders may directly or indirectly select for any of them. There are numerous steps in the development of any novel, desirable plant germplasm. Plant breeding begins with the analysis and definition of problems and weaknesses of the current germplasm, the establishment of program goals, and the definition of specific breeding objectives. The next step is selection (or generation) of germplasm that possesses the desired traits to meet the program goals. A goal is often to combine in a single variety an improved combination of desirable traits from two or more ancestral germplasm lines. These traits may include such things as higher seed yield, resistance to disease or insects, better stems and roots, tolerance to low temperatures, and better agronomic characteristics or grain quality. The choice of breeding and selection methods depends on the mode of plant reproduction, the heritability of the trait(s) being improved, and the type of seed that is used commercially (e.g., F1 hybrid, versus pure line or inbred cultivars). For highly heritable traits, a choice of superior individual plants evaluated at a si