The problem to be solved by this invention is to provide a method of gene introduction for a genus Sorghum plant and a method for producing a transformed genus Sorghum plant with a higher efficiency than the conventionally known Agrobacterium method. This invention provides a gene introduction method of a genus Sorghum plant characterized by using a medium with an increased concentration of a nitrogen source and/or an increased concentration of inorganic ions selected from magnesium ion, potassium ion, calcium ion and sodium ion, in a step of preparing a plant tissue material of a genus Sorghum plant, a step of inoculation with Agrobacterium and/or a co-cultivation step. This invention also provides a method for producing a transformed plant using the gene introduction method of this invention.

A fluazifop-resistant sorghum cultivar designated ‘21534_ACCase-R’ and plants comprising a polynucleotide encoding the polypeptide of SEQ ID NO: 39 are disclosed herein. The present invention provides seeds, plants, and plant parts derived from sorghum cultivar ‘21534_ACCase-R’ and those including SEQ ID NO: 39. Further, it provides methods for producing a sorghum plant by crossing ‘21534_ACCase-R’ with itself or another sorghum variety. The invention also encompasses any sorghum seeds, plants, and plant parts produced by the methods disclosed herein, including those in which additional traits have been transferred into ‘21534_ACCase-R’ through the introduction of a transgene or by breeding ‘21534_ACCase-R’ with another sorghum cultivar.

Disclosed herein is a unique molecular marker in sorghum genome for conferring broad range fungal resistance trait, and the use of the molecular marker to manipulate resistance in sorghum. A disease resistance gene called ANTHRACNOSE RESISTANCE GENE 1 (ARG1) and a negative regulator, i.e. antisense transcripts of ARG1, called CARRIER OF ARG (CARG) for the fungi resistance gene are knocked out within a quantitative trait locus (QTL).

The invention relates to the production of graft-mediated hybrid monocotyledonous plants. Methods for the production of such plants are disclosed herein.

Methods and compositions useful in sorghum breeding are provided. Methods of producing haploid sorghum embryos, plants, seeds, and plant parts are provided. The sorghum haploid embryos produced may be doubled to produce doubled haploid embryos, plants, seeds, and plant parts as part of a sorghum breeding program.

Described herein is an amino acid sequence having SEQ ID NO: 3, including a mutation from a Tryptophane to a Serine residue at position 445. Also described are nucleic acids encoding the amino acid sequence, and plants or seeds including the amino acid sequence such as a sorghum plant or seed. In an aspect, the plant or seed has enhanced resistance or tolerance to an HPPD herbicide.

A novel sorghum variety designated XS7440 and seed, plants, plant parts and plant cells thereof are produced from a cross of inbred sorghum varieties. Methods for producing a sorghum plant comprise crossing hybrid sorghum variety XS7440 with another sorghum plant. Sorghum variety XS7440, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of sorghum variety XS7440 are provided. Methods for producing a sorghum plant containing in its genetic material one or more traits introgressed into sorghum variety XS7440 include one or both of backcross conversion and transformation of one or both inbred parents. The sorghum seed, plants and plant parts produced thereby are described.

A novel sorghum variety designated PHR4QYX and seed, plants, plant parts and plant cells thereof are produced from a cross of inbred sorghum varieties. Methods for producing a sorghum plant by crossing hybrid sorghum variety PHR4QYX with another sorghum plant and methods for producing a sorghum plant containing in its genetic material one or more traits introgressed into PHR4QYX through backcross conversion and/or transformation, and to the sorghum seed, plant and plant part produced thereby are described. Sorghum variety PHR4QYX, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of sorghum variety PHR4QYX are provided.

A novel sorghum variety designated PHR4BYX and seed, plants, plant parts and plant cells thereof are produced from a cross of inbred sorghum varieties. Methods for producing a sorghum plant by crossing hybrid sorghum variety PHR4BYX with another sorghum plant and methods for producing a sorghum plant containing in its genetic material one or more traits introgressed into PHR4BYX through backcross conversion and/or transformation, and to the sorghum seed, plant and plant part produced thereby are described. Sorghum variety PHR4BYX, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of sorghum variety PHR4BYX are provided.

Two sorghum maternal haploid inducer lines SMHI01 and SMHI02 are provided including seed, plants and plant parts thereof. Methods for producing sorghum haploid embryos using SMHI01 and SMHI02 are also provided. The sorghum haploid embryos produced as a result of the use of either maternal haploid inducer line SMHI01 or SMHI02 may be doubled to produce doubled haploid embryos, seeds, and plants as part of a sorghum breeding program.