13 results about "Corn pollen" patented technology

The application discloses application of ZmGOLS2 genes and ZmRAFS genes in improving pollen vitality of corn under heat shock and drought conditions, and belongs to the technical field of genetic engineering. The application improves the pollen vitality of corn, promotes the germination of pollen under heat shock and drought stress conditions, and reduces the empty stalk rate of corn under drought stress conditions by simultaneously improving the expression levels of a corn myo-inositol galactoside synthetase coding gene and a corn raffinose synthetase coding gene.

The application belongs to the field of genetic engineering, and discloses a maize pollen fertility regulation gene ZmPUB33 and an encoded protein. The gene regulates maize pollen aperture development and further mediates pollen fertility ability. After mutation, the gene cannot normally blossom, anther husks cannot basically crack, anthers are smaller than wild types, and almost not exposed, pollen grains are not active, and can cause complete male sterility of plants. The sterile line can be used for sterile seed production and production of hybrid crops, and has great application and economic value.

The application belongs to the technical field of genetic engineering, and particularly relates to application of ZmVAMP726 gene in regulation of pollen stress resistance of plants, wherein the nucleotide sequence of the ZmVAMP726 gene is shown as SEQ ID NO:1. Research finds that deletion of the gene leads to sensitivity of Arabidopsis pollen to high temperature and ultraviolet radiation, and overexpression of the gene improves the resistance of plants to high temperature and ultraviolet radiation. The application provides a new strategy for subsequent identification and cloning of more corn pollen stress resistance related genes, and breeding of corn.

Disclosed is a method of preserving pollen and storing pollen in a diluent that contains between 10% and 50% starch granules by weight or by volume. The preservation technique maintains pollen viability such that the pollen can be used to pollinate plants and create seeds. The method results in stored pollen with improved viability as compared to pollen that is left in ambient conditions or that is mixed with other diluents that do not contain the starch component. The starch can be derived from any source. Also encompassed by the invention are compositions of pollen in diluent mixtures wherein the diluent contains between 10% and 50% starch granules by weight or by volume. The compositions include the separation of dead pollen contents from live pollen grains by using starch mixed with other solid particulates.

The utility model relates to corn pollen collection technical field, concretely is corn breeding pollen collection device with automatic cleaning function, including back box and collection cylinder, the back surface fixed connection of back box has two symmetrical braces, the right side surface fixed mounting of back box has the fan, the suction end of fan extends to the inside of back box and is equipped with filter bag. The device in the use, the corn ear is put in between two transmission rods, at this moment, the operation of micro motor drives the rotation of reciprocating screw rod, and the threaded block drives two transmission rods to carry out the back and forth reciprocating movement through the rotation of reciprocating screw rod, and the pollen is shaken off, and at the same time, the operation of fan makes the negative pressure in the inside of back box, and the pollen in the collection cylinder is sucked into the inside of back box through the hose, during, through the setting of screen board, can carry out the filtration to petal, broken leaf, to improve the purity of pollen collection in the inside of back box, provide the convenience for the collection work of pollen, alleviate the work burden of staff, and the collection effect is good.

The application discloses a corn receptor kinase-encoding gene ZmER2, wherein the CDS sequence of the gene is shown as SEQ ID No.1.The application also discloses corn mutants containing the gene ZmER2, which are named mutant Zmer2-D17 and mutant Zmer2-I1 respectively, wherein the CDS nucleotide sequence of the mutant Zmer2-D17 is shown as SEQ ID No.3, and the amino acid sequence of the gene is shown as SEQ ID No.4; the CDS nucleotide sequence of the mutant Zmer2-I1 is shown as SEQ ID No.5, and the amino acid sequence of the gene is shown as SEQ ID No.6.The application also discloses that after the gene ZmER2 is mutated, a male spike non-powdering phenotype appears without affecting plant height, ear position height and ear row number and other yield characters, the phenotype is valuable material for studying pollen development, cytoplasmic inheritance and nucleo-cytoplasmic interaction, and indicates that the ZmER2 gene has a good application prospect in hybrid seed production.

The invention belongs to the field of gene engineering, and discloses a maize pollen fertility regulation gene ZmPUB33 and an encoding protein thereof. The gene mediates the fertility of pollen by regulating and controlling the development of corn pollen pores, the gene cannot bloom normally after mutation, anther glumes cannot be cracked basically, anther is smaller than a wild type and is almost not exposed, pollen grains are inactive, complete male sterility of plants can be caused, the sterile line can be used for sterile seed production and production of crop hybrids, and the application prospect is wide. And the method has huge application and economic values.

The invention relates to the technical field of corn breeding, and discloses a seed production device suitable for corn seed production, the seed production device comprises a lifting frame, a sleeve is fixedly connected in the lifting frame, an exhaust fan is fixedly arranged on the upper surface of the sleeve, and a collecting cylinder is mounted on the side, away from the sleeve, of the exhaust fan; the outer wall of the collecting barrel is installed in the lifting frame, a plurality of supporting rods are fixedly connected to the outer wall of the lower side of the sleeve, a plurality of bottom plates are slidably connected to the outer walls of the supporting rods, the upper surfaces of the bottom plates are attached to the lower surface of the sleeve, and electric push rods are installed in the bottom plates. Through mutual cooperation between the first air bag and the expansion block, when male parent corn pollen is automatically collected, different corn rhizomes are automatically clamped, meanwhile, the interior of the sleeve can be sealed, and the effects that the pollen utilization rate is reduced and the body health of operators is affected due to pollen overflowing are avoided.

The pollen collecting device comprises a collecting cover with an opening in the lower end, a cavity of an inverted-U-shaped structure is formed in the inner wall of the collecting cover and composed of a vertical cavity I, a transverse cavity and a vertical cavity II, the vertical cavity I communicates with the vertical cavity II through the transverse cavity, and an air opening I communicating with the interior of the collecting cover is formed in the side wall of the vertical cavity I; a filter screen for intercepting pollen is arranged in the vertical cavity I, a collecting bottle is detachably connected to the lower end of the vertical cavity I through a vertical pipe, an air opening II communicated with the interior of the collecting cover is formed in the side wall of the vertical cavity II, and an air blowing structure is arranged at the air opening II. When corn pollen is collected, tassels do not need to be bent, the tassels can be directly sleeved with the collecting cover only by lifting the vertical pipe with a hand, pollen collecting work can be conducted, operation is convenient and fast, the pollen collecting speed is high, and the problem that the tassels are broken can be avoided. In addition, after the vertical pipe is lifted by hand, the tassels can be directly sleeved with the collecting cover conveniently.

The invention relates to the technical field of cosmetics, in particular to a moisturizing and barrier repairing pollen composition and a preparation method and application thereof. The raw materials of the pollen composition for moisturizing and repairing the barrier comprise the pine pollen, the corn pollen, the lotus pollen and the rape pollen, a synergistic effect is achieved through the specific pollen composition, the moisturizing and barrier repairing effects are remarkably improved, the sensitization is reduced, and the pollen composition is safer and more efficient.

The invention discloses a corn pollen grain identification and perimeter and area calculation method based on DianView software, and belongs to the technical field of crop germplasm resource identification and breeding. The method comprises the following steps: firstly collecting pollen in the middle of a corn tassel, storing at low temperature, imaging under a microscope after I2-KI dyeing, then importing an image into DianView software, utilizing a watershed algorithm and combining with artificial interaction correction, accurately segmenting adhered pollen and removing impurities, and finally measuring and exporting data such as long and short axes, perimeter and area of the pollen. According to the method, accurate quantification and digital tracing of micron-sized pollen characteristics are realized through standardized process and software assistance, and reliable technical support is provided for improvement of ideal plant types and sufficient pollen of corn and parent screening.

The invention discloses a novel Chinese yeast and a preparation method thereof. The Chinese yeast is prepared from rice flour, water and one or more of the following plants: green seedlings of grains, ears of grains in a milk-ripe stage, flowers of edible flowers, edible green-leaf plants, medicinal and edible plants taking leaves as medicines, medicinal plants which take leaves as medicines and can be used for health foods, pine pollen and bee pollen. Such as wheat seedlings, corn seedlings, wheat ears, alfalfa, kale, peanut leaves, grape leaves, rosemary, mint, motherwort, pine pollen, corn pollen, linden pollen, roses, sweet-scented osmanthus and the like; plants in the Chinese yeast are selected from food, medicinal and edible homologous and health-care food plants, so that the Chinese yeast has very reliable edible safety and health-care functions, and the plants are wide in source, easy to plant and convenient to harvest; the preparation process of the Chinese yeast is simple, short in period and low in labor intensity; the prepared Chinese yeast has good saccharification and fermentation capabilities, and can be used for brewing Chinese rice wine, rice wine, yellow wine, beer and white spirit.

The invention relates to the technical field of food preservation, in particular to a low-temperature vacuum dehydration and preservation process for fresh corn. Comprising the following steps: draining fresh corns, and soaking the drained fresh corns in a fresh corn preservative for 10-15 minutes; the fresh corn preservative is prepared from the following components in parts by weight: 5.5 to 8.2 parts of corn pollen polysaccharide, 2 to 5 parts of sodium diacetate, 1.5 to 2.5 parts of lysozyme, 4 to 12 parts of chitosan, 2 to 4 parts of tea polyphenol, 6 to 18 parts of sorbitol, 2 to 4 parts of potassium sorbate, 0.6 to 1.2 parts of span-80, 2.2 to 5.6 parts of tween-80 and 10 to 15 parts of edible soybean oil. And taking out, draining, and storing at 0-4 DEG C. The invention provides a biological fresh-keeping process for fresh corn, which is simple in method, low in cost and good in fresh-keeping effect.