Means and methods are provided to produce abiotic stress tolerant plants with improved yield based on the specific identification of a DNA methylation signature in the plants out of a population of the plants. The methods involve identification and utilization of epigenetic features of a plant with high energy use efficiency.

The invention provides methods for producing seeds in watermelon. In one embodiment methods are provided comprising grafting of a seed parent onto a stress tolerant rootstock, pollinating the seed parent with pollen from a pollen donor, and cultivating the seed parent until seed is formed. In specific embodiments, triploid seeds produced by a method of the invention are rendered conspicuously distinguishable from tetraploid seeds, and thus readily selected manually or by an automated machine. Methods for increasing seed yield and/or quality are also provided.

A water stress detection method for tomatoes in a seedling stage based on micro-CT and polarization-hyperspectral imaging multi-feature fusion, comprising: using micro-CT to scan microscopic morphological features such as water stress stomata, spongy body, palisade tissue, cilia, vascular bundle, root volume, main root, and root hair density of tomatoes; using a polarization-hyperspectral imaging system to obtain macroscopic morphological features such as crown width, plant height, and leaf inclination of water stress plants, as well as leaf vein distribution, average gray, and leaf margin shaded area under a water-sensitive wavelength of 1450 nm, and macroscopic morphological features such as polarization states, stock vectors, and Mueller matrix variables of 1450 nm feature images at 0, 45, 90, 135, and 180 feature polarization angles. By fusion of internal and external structures, above-ground, underground, and macroscopic and microscopic morphological features of water stress tomatoes, and mutual fusion of water stress feature wavelength images and polarization state features, advantages are complementary, comprehensive and precise extraction and precise quantitative analysis of water stress features of the tomatoes are implemented, and a basis for scientific management of water and fertilizer integration of facilities is provided.

The present invention provides a method for cultivating a plant seedling, which can cultivate a seedling causing no spindly growth, having a thick stem, and being favorably grown even after planting. The method for cultivating a plant seedling of the present invention is a method for cultivating a plant seedling by irradiation of a plant seedling with artificial light for promotion of growth, comprising continuously irradiating the plant seedling with blue illumination light for period (A), wherein 30% or more and less than 80% of the time taken for period (A) for continuously irradiating the plant seedling with blue illumination light corresponds to period (A-1) for continuously irradiating the plant seedling with blue illumination light and red illumination light.

The present invention provides a method for cultivating a plant seedling, which can cultivate a seedling causing no spindly growth, having a thick stem, and being favorably grown even after planting. The method for cultivating a plant seedling of the present invention is a method for cultivating a plant seedling by irradiation of a plant seedling with artificial light for promotion of growth, comprising continuously irradiating the plant seedling with blue illumination light for period (A), wherein 30% or more and less than 80% of the time taken for period (A) for continuously irradiating the plant seedling with blue illumination light corresponds to period (A-1) for continuously irradiating the plant seedling with blue illumination light and red illumination light.

A device and a method for breeding blueberry-specific mycorrhizal fungi. The device includes a container, where a bottom of the container is laid with perlite to form a perlite layer; an absorbent cotton is arranged on the perlite layer; a hole for planting is provided in the absorbent cotton and blueberry tissue culture seedlings or moss seedlings are placed in the hole; and a spore transfer solution is provided around the blueberry tissue culture seedlings or moss seedlings. When used as a bacterial fertilizer for inoculation in the field, the pieces of absorbent cotton are buried directly around the blueberry roots; while used for research, one of the pieces of the absorbent cotton is washed with sterile water and filtered with a filter paper to obtain mycorrhizal fungi spores.

The invention provides seed and plants of tomato line FDSXJ11-6002. The invention thus relates to the plants, seeds, and tissue cultures of tomato line FDSXJ11-6002 and to methods for producing a tomato plant produced by crossing such plants with themselves or with another tomato plant, such as a plant of another genotype. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of such plants, including the fruit and gametes of such plants.

The present disclosure discloses a method for tomato soilless cultivation with suspended trough, including four aspects: setting of soilless cultivation substrate trough, preparation of soilless cultivation substrate, efficient and economical grafting and plant management. The efficient and economical grafting includes seedling raising, preparation of new scion, grafting and healing culture. The plant management includes planting, pruning and vine raising, flower and fruit management, and plant type maintenance. the present disclosure utilizes a soilless cultivation substrate trough, which can overcome the shortcomings of poor water retention, difficult control of temperature and water and fertilizer application in substrate bag cultivation and give full play to the characteristics of the cultivation substrate. The use of efficient and economical grafting and supporting plant management methods can optimize plants configuration, simplifying the work content of plant management, and improving the utilization rate of cultivation space.

The present disclosure discloses a method for tomato soilless cultivation with suspended trough, including four aspects: setting of soilless cultivation substrate trough, preparation of soilless cultivation substrate, efficient and economical grafting and plant management. The efficient and economical grafting includes seedling raising, preparation of new scion, grafting and healing culture. The plant management includes planting, pruning and vine raising, flower and fruit management, and plant type maintenance. the present disclosure utilizes a soilless cultivation substrate trough, which can overcome the shortcomings of poor water retention, difficult control of temperature and water and fertilizer application in substrate bag cultivation and give full play to the characteristics of the cultivation substrate. The use of efficient and economical grafting and supporting plant management methods can optimize plants configuration, simplifying the work content of plant management, and improving the utilization rate of cultivation space.

An agricultural fluorine-resin film and a greenhouse that can increase yield of crops even in high-eave houses are provided.

In the agricultural fluorine-resin film containing fluorine-resin, one surface has an uneven surface 1a, a transmittance at a wavelength of from 300 to 800 nm is from 20% to 70%, and a transmittance T.sub.2 below is 75% or more.

Transmittance T.sub.2: Transmittance of a laminate at a wavelength of from 300 to 800 nm, obtained by laminating the resin film and a test film, in which the uneven surface 1a of the resin film is completely filled with water, and the test film which has a thickness of 50 m, is formed of only an ethylene-tetrafluoroethylene copolymer, and has a transmittance at a wavelength of from 300 to 800 nm of 94% and an arithmetic average roughness Ra of both surfaces of 0.04 m is laminated on the resin film.