Methods of Amaranthus control are provided, comprising, artificially pollinating an Amaranthus species at a growth area with an effective amount of pollen that reduces fitness of the at least one Amaranthus species, the effective amount comprising 1 mg to 1 gram per plant per application using a precision tool-assisted application or 10 gram to 100 kg per acre per application using a non-precision tool-assisted application during a flowering season of the Amaranthus species.

Disclosed are rice environmental conditional-lethal mutant gene osesl1, an encoding protein and use thereof The gene osesl1 has a nucleotide sequence shown as SEQ ID NO: 1 in the Sequence Listing. The encoding protein thereof has an amino acid sequence shown as SEQ ID NO: 2. After heading of osesl1 mutant rice, seed embryo lethal phenotype appears at 12 days after pollination, exhibiting darkening at the junction between embryo and endosperm. When an average temperature is below 22 C., a seed embryo is normal; when the average temperature is above 28 C., the seed embryo is lethal; when the temperature is between 22 C. and 28 C., the seed embryo is lethal under long daylight conditions (>13 h) and normal under short daylight conditions (<13 h). Use of the gene osesl1 in controlling seed embryo development of rice is further provided.

A Brassica oleracea plant is provided having self-compatibility, or a progeny thereof, wherein the plant excludes cauliflower and Chinese kale. For example, a Brassica oleracea plant having self-compatibility is provided. Thereby, technical means that makes it possible to accomplish stable and efficient production of parental line seeds for a Brassica oleracea plant can be provided.

The present invention relates to methods and compositions for identifying, selecting and/or producing a maize plant or plant part having increased fertility. A maize plant or plant part that has been identified, selected and/or produced by any of the methods of the present invention is also provided.

The invention relates to plants wherein the protein OSD1, involved in the transition from meiosis I to meiosis II is inactive. These plants produce Second Division Restitution (SDR) 2n gametes. The invention further relates to plants wherein the inactivation of OSD1 is combined with the inactivation of a gene involved in meiotic recombination in plants, and of a gene involved in the monopolar orientation of the kinetochores during meiosis. These plants produce apomeiotic gametes. These plants are useful in plant breeding.

A new and distinct cultivar of Hydrangea plant named HIFIR, characterized by its upright and broadly spreading plant habit; freely branching habit; strong and sturdy stems; freely and continuous flowering habit; large and dense inflorescences with red to red purple-colored sterile flowers; and good post-production longevity.

A new and distinct cultivar of Hydrangea plant named HIRIV, characterized by its upright and broadly spreading plant habit; freely branching habit; strong and sturdy stems; freely and continuous flowering habit; large and dense inflorescences with light red purple-colored sterile flowers; and good post-production longevity.

A new and distinct cultivar of Hydrangea plant named HIMOU, characterized by its upright and broadly spreading plant habit; freely branching habit; strong and sturdy stems; freely and continuous flowering habit; large and dense inflorescences with pale red purple-colored sterile flowers; and good post-production longevity.

Disclosed is a method for breeding self-compatible potatoes, including the following steps: (1) selecting a self-compatible potato variety material and referring to it as PG6359, and cloning the S-RNase gene of PG6359 through the transcriptome sequencing method; and (2) obtaining two full-length sequences of the S-RNase gene from the cloned S-RNase gene in step (1) and referring to them as S.sub.s11 and S.sub.s12 respectively, and after carrying out an artificial self-pollination for the variety material PG6359, selecting the variety material having the genotype of S.sub.s11S.sub.s11 from the offspring as the female parent, and selecting a self-incompatible material as the male parent, and then obtaining a self-compatible F.sub.1 generation by hybridization. The invention overcomes the self-incompatibility of diploid potatoes, and does not require the introduction of any wild potato gene fragments, thereby avoiding linkage drag, and providing a basis for the rapid creation of a diploid potato inbred line.

The invention relates to Spathiphyllum plants having reduced pollen content, obtained by a method, comprising the steps of providing a tetraploid Spathiphyllum parent and a diploid Spathiphyllum parent, and crossing these tetraploid and diploid parents to produce the Spathiphyllum plants having reduced pollen content. The invention also relates to a method for producing Spathiphyllum plants having reduced pollen content.