The present invention relates to wheat plants comprising a mutation causing an alteration of the amino acid sequence in centromere histone H3 (CENH3), which have the biological activity of a haploid inducer. Further, the present invention provides methods of generating the wheat plants of the present invention and haploid and doubled haploid wheat plants obtainable by crossing the wheat plants of the present invention with wildtype wheat plants.

Provided herein are materials and in planta methods for using haploid inducer lines containing a targeted endonuclease to generate transgenic or non-transgenic plants with targeted mutations and/or genomic modifications.

Provided herein are materials and in planta methods for using haploid inducer lines containing a targeted endonuclease to generate transgenic or non-transgenic plants with targeted mutations and/or genomic modifications.

Provided herein are materials and in planta methods for using haploid inducer lines containing a targeted endonuclease to generate transgenic or non-transgenic plants with targeted mutations and/or genomic modifications. Also provided herein.

Provided herein are materials and in planta methods for using haploid inducer lines containing a targeted endonuclease to generate transgenic or non-transgenic plants with targeted mutations and/or genomic modifications. Also provided herein.

Monocot plants heterozygous for centromeric histone 3 (CenH3) and optionally expressing gene editing constructs, for use in inducing haploids of a monocot target plant and optionally pass-through gene editing are provided. The monocot haploid inducer plants are typically composed of diploid plant cells having only one allele encoding a functional CENH3 protein. The diploid plant cells can also include, for example, one CenH3 allele encoding non-functional CENH3 protein. In some embodiments, the allele encoding non-functional CENH3 protein is a frameshift mutation, protein null allele, an RNA null allele, or a combination thereof. The monocot haploid inducer plant can also include gene editing machinery, such as a site-directed nuclease and optionally a guide RNA stably expressed by cells of the monocot plant. Methods of inducing formation of a target haploid monocot plant while optionally simultaneously modifying the target monocot plant’s genome are also provided.

Monocot plants heterozygous for centromeric histone 3 (CenH3) and optionally expressing gene editing constructs, for use in inducing haploids of a monocot target plant and optionally pass-through gene editing are provided. The monocot haploid inducer plants are typically composed of diploid plant cells having only one allele encoding a functional CENH3 protein. The diploid plant cells can also include, for example, one CenH3 allele encoding non-functional CENH3 protein. In some embodiments, the allele encoding non-functional CENH3 protein is a frameshift mutation, protein null allele, an RNA null allele, or a combination thereof. The monocot haploid inducer plant can also include gene editing machinery, such as a site-directed nuclease and optionally a guide RNA stably expressed by cells of the monocot plant. Methods of inducing formation of a target haploid monocot plant while optionally simultaneously modifying the target monocot plant’s genome are also 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.

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.

The invention provides novel methods to genotype haploid embryos using molecular assays. For example, quantitative methods for genotyping are provided. The methods provided also include providing a plurality of haploid kernels, determining the genotype of the haploid embryo of said kernels by distinguishing its genotype from the endosperm genotype, selecting a kernel having a desired genotype and producing doubled haploid plant from the selected kernel.