Provided are isolated polynucleotides and nucleic acid constructs which comprise a nucleic acid sequence at least 80% identical to a nucleic acid sequence selected form the group consisting of SEQ ID NOs: 1-219, 367-5628, 9688-9700, and 9709-9752; and isolated polypeptides which comprise an amino acid sequence at least 80% homologous to an amino acid sequence selected from the group consisting of SEQ ID NOs: 220-366, 5629-9400, 9701-9708, and 9753-9796. Also provided are transgenic cells and plants expressing same and methods of using same for increasing yield, growth rate, biomass, vigor, oil content, seed yield, fiber yield, fiber quality, nitrogen use efficiency, and/or abiotic stress of a plant.

It was found that plants with loss of functional Msi2 protein due to a nucleotide polymorphism resulting in the introduction of a premature stop codon in the Msi2 protein, are able to induce haploid offspring after a cross to or with a wild type plant comprising a functional Msi2 protein. The invention relates to generation of haploid and doubled haploid plants.

The present invention provides a wheat plant comprising an Rht-B1 allele which encodes an Rht-B1 (DELLA) polypeptide. Grain from a near-isogenic wheat line comprising the dwarfing Rht-B1c allele was subjected to sodium azide mutagenesis. Plants exhibiting early leaf elongation rates or mature plant height greater than the dwarf parent were selected and the Rht-B1 gene sequenced. This identified 35 mutated alleles of Rht-B1c. Similar methods were also used to identify mutant alleles of the dwarfing sln1d allele in barley, where DELLA is encoded by the sln1 gene.

Constructs for genetically engineering plants to selectively alter DELLA gene expression to promote plant growth while maintaining root integrity are provided, as are methods of designing, making and using such constructs.

The present invention includes compositions and methods of modulating the length of one or more cotton fibers in a plant by contacting the plant or tissue derived therefrom with at least one of: a nucleotide; a modulator of ectoapyrase gene transcription; or an anti-ectoapyrase antibody or fragments thereof, at a concentration that modulates growth of one or more cotton fibers.

The present invention is directed to plants that display an improved oil quantity phenotype or an improved meal quality phenotype due to altered expression of an HIO nucleic acid. The invention is further directed to methods of generating plants with an improved oil quantity phenotype or improved meal quality phenotype.

Transgenic plants that have enhanced yield-related traits, such as increased seed oil production, are produced by genetically engineering the plants to down-regulate the expression of at least one BPM protein. Such transgenic plants can, for example, be cultivated and yield higher seed oil production than control plants which have not been genetically engineered for down regulation of a BPM protein.

Compositions and methods for improving plant growth are provided herein. Polynucleotides encoding DUF2996 domain-containing protein s, polypeptides encompassing DUF2996 domain-containing protein s, and expression constructs for expressing genes of interest whose expression may improve agronomic properties including but not limited to crop yield, biotic and abiotic stress tolerance, and early vigor, plants comprising the polynucleotides, polypeptides, and expression constructs, and methods of producing transgenic plants are also provided.

Isolated polynucleotides and polypeptides encoded thereby are described, together with the use of those products for making transgenic plants with increased tolerance to abiotic stress (e.g., high or low temperature, drought, flood).

The present disclosure provides methods for increasing meiotic recombination in crop plants, as well as plants and seeds produced by such methods.