408 results about "Flower pollen" patented technology

The present invention relates to the field of allergens and more specifically to a novel isolated allergen from the species Cupressaceae shown to be a primary sensitizer for severe peach allergy mediated by the protein Pru p7. The allergen is homologous with Pru P7 in peach, a protein belonging to the Gibberelin Regulating Proteins (GRPs). The novel allergen also 5 shares high sequence homology among other species from the Cupressaceae family and there is therefore also provided additional novel allergens in two other species of the Cupressaceae family. The novel allergens find use in the in vitro diagnosis of, treatment and / or prevention of Type 1 Cupressaceace pollen allergy and Cupressaceace pollen-associated food allergies.

The present invention aims to treat hay fever by providing water from which pollen (an allergen) has been removed using the pollen treatment facility C of the present invention. [Solution] In a water treatment system consisting of a water tower B, a water treatment plant D, a sand filtration area E, and a water distribution reservoir F, a pollen treatment facility is provided to remove pollen from the river water 1 supplied to the water treatment plant D.

The present application relates to the technical field of plant genetic breeding, and particularly relates to a Brassica campestris fatty acyl reductase BcFAR2 gene, an expression protein thereof and application, a base sequence of the Brassica campestris fatty acyl reductase BcFAR2 gene is shown as SEQ ID NO. 1, and an amino acid sequence of the expression protein is shown as SEQ ID NO. 2, the Brassica campestris fatty acyl reductase BcFAR2 gene is cloned, and BcFAR2 gene overexpression Brassica campestris sterile plants can restore pollen activity; gene knockout Brassica campestris fertile plants can significantly reduce pollen activity; in Arabidopsis thaliana, overexpression of the gene can significantly improve salt tolerance of the transgenic plants; and in Brassica campestris, overexpression of the gene can significantly enhance salt tolerance.

A device for distributing pollen attachable to a drone, characterized in that it comprises: - a hopper (1) that stores a quantity of pollen, equipped with an agitator that ensures the homogeneity of the pollen, - at least one outlet orifice (8), located at the bottom of the hopper (1), - a metering lever (2) located below the outlet orifice (8), equipped with a displacement mechanism that regulates the degree of opening of the outlet orifice (8) and therefore the quantity of pollen that comes out through it, - a Venturi tube (3) provided with a central narrowing corresponding to the outlet orifice (8), - a blower (5) connected to one end of the Venturi tube (3), equipped with a motor, which provides pressure along the Venturi tube (3) to facilitate the exit of the pollen, - at least one adjustable nozzle (4) connected to the other end of the Venturi tube (3), which allows the dispersion of the pollen, - a supporting structure (7) linked to the hopper (1) which is equipped with a plurality of couplings (6) intended to be coupled to a drone, - a control unit connected to the displacement mechanism of the metering lever (2) that regulates the pollen output and connected to the blower motor (5), - a power supply or a connecting element intended to connect the device to a power supply of the drone.

The invention belongs to the technical field of hybrid rice breeding, and discloses a method for cultivating a long-grain late-japonica black-fragrant-glutinous rice three-line sterile line, which comprises the following steps: S1, selecting a short-round-grain early-maturing japonica rice local germplasm with black brown rice seed coat and fragrance, and hybridizing with short-round-grain late-japonica glutinous rice to obtain a hybrid; s2, the hybrid seeds are subjected to multiple cross with long-grain fragrant high-yield high-quality tasty late japonica rice, long-grain black fragrant glutinous rice excellent strains are selected from multiple cross advanced generations to enter a strain yield identification test, the excellent strains are selected as recurrent parents to be subjected to test cross with a long-grain late japonica sterile line, and a sterile test cross group is obtained; s3, sterile plants similar to the recurrent parents are selected from the sterile test cross population and subjected to continuous backcross transformation with the recurrent parents, the long-grain late-japonica black-fragrant-glutinous rice three-line sterile line which is regular and consistent in population, thorough and stable in pollen abortion and good in flowering habit is obtained, and the corresponding recurrent parents are maintainer lines; the problems that the yield of black rice is low and the cooking taste quality is poor are solved.

System for recording data on allergic reactions of a vehicle occupant, comprising a recording and / or storage device (5, 30) by means of which pollen in the area of ​​the vehicle (1) can be recorded and / or stored, wherein the recording and / or storage device (5, 30) has an electrically controllable pollen inlet (34) with which the pollen recording can be controlled.

The utility model relates to collecting device technical field, and disclose a pollen collecting device, including the box, the inside middle place rotation of box is installed with the turntable, the turntable is provided with the uniformly distributed sector groove, the inside of sector groove all places has the collecting box, the outside of turntable is fixed and is connected with the external gear in the near upper side department, the inside bottom of box is rotatory and is installed with the transmission shaft in the near right side middle department, the outside of transmission shaft is fixed and is connected with the worm wheel in the near lower side department, the inside of box is rotatory and is installed with the worm in the front side department of transmission shaft, the meshing between worm and worm wheel, the outside of transmission shaft is fixed and is connected with the main gear in the near upper side department. The device can be according to actual demand flexible rotation turntable, will be accurately placed in the corresponding collecting box below the external thread pipe, realizes the classification collection of different kinds of pollen, is helpful to subsequent targeted research and use to pollen, reduces the cumbersome process of classification arrangement.

The invention relates to the technical field of forest cultivation, and discloses a carya illinoensis fruit forest variety configuration method which comprises the following steps: configuring a main cultivation variety and a pollination variety in a fruit forest; preparing a pollination synergistic composition; the composition is sprayed at the initial stage of stigma exposure of female flowers of a main cultivated variety. The composition comprises a phenolic acid grafted carboxymethyl chitosan derivative, low methoxyl pectin, a calcium ion cross-linking agent, sugar alcohol chelated boron and spermidine. According to the method, an interfacial film with antioxidant activity is formed on the surface of the stigma by using the grafting modified matrix, so that the stigma browning is effectively inhibited, and the pollination period is prolonged; by constructing a calcium cross-linked low-methoxyl pectin interpenetrating network, an interfacial film is endowed with an intelligent degradation characteristic of enzyme-sensitive response to pollen, and protection at ordinary times and immediate dissolution after touching flowers are realized. According to the method, pollen is captured through static electricity, nutritional factors are released in a targeted mode, the pollination and fertilization efficiency is remarkably improved, the sterility risk in the flowering phase is relieved, and the yield and quality of carya illinoensis are improved.

The utility model relates to the technical field of fructus amomi pollination, and discloses a fructus amomi supplementary pollination device which comprises a base, an outer sleeve is fixedly connected to the left side of the top end of the base, an air pump is fixedly connected to the right side of the top end of the base, a storage box is arranged at the top of the base, and an adjusting assembly for powerful supporting is arranged above the outer sleeve. The adjusting assembly comprises an outer connecting plate, and an inner adjusting rod is vertically arranged at the top of the outer sleeve in a penetrating mode. According to the auxiliary pollination device for fructus amomi, by arranging an inner adjusting rod, an outer sleeve, an external connecting plate, a supporting plate, a placement frame, a sliding block and an auxiliary groove, the flexibility of a pollen suction head is improved, the structural adaptability is enhanced, the position and the opening state of a fructus amomi flower can be accurately recognized, and the pollination effect is improved. The problems that an existing auxiliary pollination device for fructus amomi is low in pollen collection efficiency, poor in pollen activity keeping, low in pollination precision, low in automation degree, high in cost and the like are solved.

The invention discloses a method for carrying out nine-fold breeding by utilizing female gametes, and relates to the technical field of biological breeding. Comprising the following steps: step 1, pollinating hexaploid persimmon pollen to a'rattan royal house 'containing 2n eggs; 2, collecting young fruits which are born for 65-70 days after pollination, stripping seeds, putting the seeds into a sterilized triangular flask, treating the seeds for 30 seconds in an ultra-clean workbench by using 70% ethanol, pouring out the seeds, adding a 1% NaClO solution, soaking the seeds for 10 minutes, and shaking the seeds once every 3-4 minutes. According to the method for carrying out nine-fold breeding by utilizing female gametes, in persimmon breeding, compared with a 2n pollen path, the 2n egg path is higher in feasibility, 2n eggs and complete male germplasm with good pollen traits are hybridized, pollination populations are expanded, and polyploidy seedless materials can be obtained.

The invention belongs to the technical field of plant germplasm resource preservation, and provides a special protective agent for pollen integrated treatment of Chinese honey locust hybrid flowers, a kit and an integrated treatment method thereof. The protective agent is prepared from 8%-12% w / v of trehalose, 0.05%-0.08% v / v of Triton X-100 and a phosphate buffer solution with the pH value of 7.0. The integrated treatment method comprises the following steps: performing stamen morphology primary screening and separation on the Chinese honey locust flowers at low temperature; grinding in an ice bath by using a protective agent, filtering, centrifuging and enriching fertile pollen; quickly evaluating the activity of the split-flow part suspension by using an MTT method; carrying out trehalose-tert-butyl alcohol gradient dehydration and low-temperature vacuum drying on the residual part to obtain dried pollen, and storing for a long time; and treating with rehydration liquid before use. The extraction damage is reduced to the maximum extent; tert-butyl alcohol and trehalose synergistically dehydrate and dry, so that the pollen safely enters a vitrification state, and long-term stable preservation is realized; the repeatability is high, standardized operation is achieved, and a reliable tool is provided for gleditsia sinensis germplasm resource preservation and breeding.

1. The name of the design product: inflator powder sprayer. 2. The use of the design product: for spraying pollen for artificial pollination and for spraying termites and insecticide powder for pest control. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention relates to the field of fruit tree pollination equipment, specifically to an integrated device for precise pollination of pear tree inflorescences and constant temperature maintenance of pollen activity. The device includes a guide tube, with a constant temperature tube sleeved outside the guide tube and fixedly connected to it. One end of the guide tube has a gas path switching component for switching gas flow direction. The gas path switching component includes a switching cavity fixedly connected to one end of the guide tube, with several air inlets on the sidewall of the switching cavity. The end of the switching cavity away from the guide tube is fixedly connected to the inner sidewall of the constant temperature tube, and the end of the constant temperature tube away from the switching cavity has several exhaust holes. A T-shaped slider is slidably fitted onto the inner sidewall of the switching cavity. This invention, through the gas path switching component and the telescopic guide hood assembly, solves the problems of poor pollen activity maintenance due to large temperature fluctuations before spraying and during transport in existing pear tree inflorescence pollination processes, as well as inaccurate pollination caused by external wind disturbances during pollination.

The invention relates to the field of plant genetic engineering, and particularly discloses a soapberry SmCYCD3; 2 gene and application thereof. The nucleotide sequence of the gene is shown as SEQ ID NO: 1, and the sequence of the protein coded by the gene is shown as SEQ ID NO: 2. Experiments show that the gene has high specificity expression in female flowers of soapberry. By heterologous overexpression of the gene in arabidopsis thaliana, typical'female promotion and male inhibition 'phenotypes such as pistil elongation, stamen number reduction and shortening, pollen viability reduction and small fruit pods of transgenic plants can be caused. Molecular mechanism studies show that: SmCYCD3; 2, performing functions by up-regulating expression of cell cycle related genes and pistil development genes AtCRC and down-regulating expression of stamen development key genes at the same time; the invention provides a key gene resource and a theoretical basis for directionally regulating and controlling the sex ratio of plant flowers through a molecular breeding means and improving the fruit yield of woody economic tree species.

The invention belongs to the field of biotechnology engineering, and particularly relates to application of a tomato SlCOMT1 gene in regulation and control of tomato anther heat resistance. The invention discloses a nucleotide sequence SEQ ID NO.1 of a tomato SlCOMT1 gene and an amino acid sequence SEQ ID NO.2 of a protein coded by the gene, a slcomt1 knockout mutant plant is obtained by utilizing a CRISPR-Cas9 technology, and under high temperature stress, compared with a wild plant, the tomato pollen viability and the fruit setting rate of the SlCOMT1 knockout mutant plant are remarkably improved. The invention proves that SlCOMT1 mutation can cause accumulation and increase of endogenous 5-hydroxytryptamine in tomato flowers at high temperature, so that the high-temperature resistance of tomato anther development is improved, and the yield of tomato anther is stabilized. According to the method, the new germplasm of the heat-resistant tomato can be quickly created, support is provided for high-temperature-resistant production of the tomato, and the method has great application value.

The utility model relates to a high-efficiency and high-activity collecting device for field pollen, which comprises a collecting bin, a cooling bin and collecting cloth, and one end of the collecting cloth penetrates through the collecting bin, extends into the cooling bin and is wound on a cloth winding roller; the collecting cloth located in the collecting bin is separated on the pollen conveying channel of the collecting bin and used for intercepting the sucked pollen and conveying the pollen into the cooling bin to be rolled and stored. The device can be widely applied to mechanical collection and storage of pollen of gramineous crops or crops needing artificial supplementary pollination, pollen collection efficiency is improved, pollen vitality and pollination setting rate can be guaranteed to a greater extent, and requirements of large-scale production of crop hybrids for pollen are met.

This artificial intelligence-based pollen recognition and counting system is designed to recognize and count healthy, unhealthy, and dead pollen in microscopic images with high accuracy and efficiency. This system uses a convolutional artificial neural network method that can detect objects in images quickly, precisely, and lightly. This system also has interactive software created with the Python programming language and the streamlit framework, which can display and store the results of pollen recognition and counting. This system is created by collecting, labeling, and augmenting pollen data, training and evaluating an artificial intelligence model with accuracy and error metrics, and integrating the model into the software. This system is useful for helping plant breeders optimize the crossing process.By utilizing this system, plant breeders can determine the quality and quantity of pollen more accurately and effectively, this is an effort to reduce the number of rejected seeds, which affects the productivity and sustainability of plantations.

The invention belongs to the technical field of plant genetic engineering, and particularly discloses a nitrate ion transport channel gene PbrSLAH3b and application of the nitrate ion transport channel gene PbrSLAH3b in promoting growth of pear pollen tubules. The method comprises the following steps: extracting total RNA (Ribonucleic Acid) of Dangshan pears from pollen of Dangshan pears; carrying out reverse transcription on the RNA to obtain cDNA (complementary deoxyribonucleic acid); and by taking the cDNA as a template, carrying out amplification to obtain the pear pollen tube nitrate transport channel gene PbrSLAH3b, the PbrSLAH3b gene provided by the invention belongs to a slow anion channel SLAC / SLAH family member, the PbrSLAH3b is remarkably up-regulated in expression in the early growth stage of a pollen tube, and the PbrSLAH3b is positioned in a plasma membrane. The invention verifies that PbrSLAH3b can form a functional anion channel with NO3 <-> selectivity under the condition of not depending on proton gradient or phosphorylation state, and the PbrSLAH3b has relatively strong selectivity on NO3 <->. Therefore, the PbrSLAH3b gene can mediate the absorption and transport of the pollen tube to NO3 <-> and maintain the polarity growth directivity of the pollen tube, and has important application value for revealing the ion regulation mechanism of the growth of the fruit tree pollen tube and improving the reproductive development of the fruit tree.

Tree pollen allergy is a seasonal allergy caused by various tree pollens suspended in the air. This allergy affects a significant proportion of the population, particularly in Europe and North America, and is characterized by symptoms such as sneezing, nasal congestion, runny nose, itchy or watery eyes, and throat inflammation. These symptoms typically occur in spring when trees such as birch, alder, hazel, and oak release pollen into the air. Tree pollen allergy is a type 1 hypersensitivity reaction mediated by immunoglobulin E (IgE) antibodies. This invention relates to antibodies and their antigen-binding fragments that bind to one or more tree pollen allergens, Bet v 1, Aln g 1, Cor a 1, and Que a 1, and inhibit the IgE-mediated allergic reaction.

The present invention relates to a lemon juice-containing composition and its use for cleaning skin and / or hands. The composition comprises 5-30% by weight lemon juice or a lemon juice concentrate, 0.5-10% by weight phenoxyethanol, 2-60% by weight anionic surfactant and ad 100% by weight water. The composition is particularly suitable for the effective but at the same time skin-friendly removal of contaminants containing chlorophyll and / or other plant dyes, of plant juices / extracts and / or other plant parts, such as flower pollen and / or plant dusts, and / or of phytopathogens, fertilizer residues, herbicides, bactericides, fungicides, virucides and germination inhibitors.

The utility model discloses a portable wheat single plant bagging pollination auxiliary device, including the pollination cover of ground insertion, pollination cover inside inserts the wheat of pollination, pollination cover one side is provided with the recess, recess inside fixedly has the mark card, pollination cover top side fixedly connected with the fixing frame, and the vibration block is vibratedly connected to the inboard of fixing frame, and pollination cover top and bottom all are provided with the opening, and the upper sealing piece is fixedly connected to pollination cover top opening inner wall, two groups are provided with the upper sealing piece, and the upper sealing piece is the sector structure, the opening inside inserts the collection powder hopper, the collection powder hopper is funnel shape structure, and the collection powder hopper bottom opening corresponds with the position of the wheat column head of pollination, and the upper sealing piece one end bending is pasted in the collection powder hopper outer wall, and the collection powder hopper top is provided with the bundle mouth, and the lower sealing piece is provided to pollination cover bottom opening inner wall. The device can improve the effect of pollen release, thereby guaranteeing the pollination effect, and reducing the frequency of pollination.

The utility model discloses a tomato breeding pollination device, and particularly relates to the field of tomato breeding, the tomato breeding pollination device comprises a pollen tank for containing pollen and a piston pipe for blowing the pollen, the front end of the piston pipe is provided with a flared pipe for spraying the pollen, and the rear end of the piston pipe is connected with a micro air pump; a telescopic auxiliary pressure pipe fitting is arranged below the piston pipe, the rear end of the auxiliary pressure pipe fitting is connected with the piston pipe, the front end of the auxiliary pressure pipe fitting extends to the position below the horn pipe, and a handle is connected to the bottom of the auxiliary pressure pipe fitting. According to the utility model, the pollen flow path is prolonged, the airflow speed is reduced, the pollen is intensively sprayed to the stigma, the utilization rate of the pollen is improved, the main airflow is matched with the auxiliary lateral airflow, the pollen and plants can be lifted, the attachment of the pollen in the closed flower is enhanced, and the pollination effect of the closed flower and the multi-layer flower is improved.

This invention provides a method for artificial pollination using indicator pollen, belonging to the field of hybridization breeding technology. The method utilizes indicator pollen that is reproductively isolated from the target plant, preventing fertilization. The indicator pollen mixes with the target plant's pollen and adheres to the stigma, allowing for visual inspection to determine if pollen adheres evenly to the stigma. This invention also reduces the amount of target pollen used, indirectly reducing the amount of male cotton flowers harvested, thus contributing to increased male cotton yield. The method also improves work efficiency, quickly identifying whether pollination is sufficient and even; if uneven pollination occurs, workers can promptly supplement the pollination. Furthermore, this method minimizes the chance of missing male stigmas, indirectly increasing pollination rate and reducing shedding rate; it also improves boll formation rate, reduces shedding rate, and increases seed yield.

The utility model relates to the technical field of corn breeding pollination, in particular to an artificial supplementary pollinator for corn breeding. The handle is fixedly connected with a bobbin, the bobbin is fixedly nested with a damping sliding sleeve, the damping sliding sleeve is in up-down damping sliding fit with a sliding rod, the sliding rod is fixedly embedded with a clamping ring, the clamping ring is fixedly connected with a sleeve, the sleeve is fixedly communicated with a powder pumping pipe, and the powder pumping pipe is fixedly communicated with a small direct fan. The output end of the small direct fan is communicated and fixed with a pollination pipe, and the right end of the pollination pipe is communicated and fixed with a holding pipe. The top of the sleeve is communicated and fixed with a pollen pumping pipe, and the pollen pumping pipe is matched with a small direct fan and a pollination pipe to shake pollen on tassels, pump the pollen to an outlet of the pollination pipe and correspondingly blow the pollen to female spike filaments for integrated pollination, so that the pollen taking step and the pollination step are combined and continuously carried out.

The invention belongs to the technical field of medicine, and discloses an artemisia annua pollen allergen sublingual drop as well as a preparation process and application thereof.The preparation is realized through the following core processes: firstly, performing raw material screening and supercritical CO2 degreasing pretreatment on artemisia annua pollen at the full-bloom stage in North China, then performing graded ultralow-temperature freezing and crushing, and performing freeze drying to obtain the artemisia annua pollen allergen sublingual drop. The particle size D90 of the superfine powder is smaller than or equal to 4 microns; then adopting a neutral protease and pectinase composite enzymatic hydrolysis system, and combining 4 DEG C low-temperature pulse ultrasound-assisted treatment to accelerate the dissolution of allergens; carrying out tangential flow grading purification and buffer solution replacement by virtue of 100kDa and 5kDa PES (Polyether Sulfonate) ultrafiltration membranes, and introducing a compound stabilizer; and finally, performing three-stage sterile filtration, and performing encapsulation and preservation. According to the process, through multi-link collaborative optimization, the extraction efficiency and activity stability of allergens are improved, and the prepared sublingual drops have the effects of improving allergic rhinitis, allergic asthma and airway inflammation and also have excellent permeability.

The invention relates to the field of food, and particularly discloses a kudzuvine root, rape pollen and bean composition and a preparation method thereof, and the kudzuvine root, rape pollen and bean composition comprises the following raw materials in parts by weight: 40-60 parts of rape pollen, 20-40 parts of kudzuvine root powder, 1-10 parts of rhizoma polygonati powder, 1-10 parts of smoked plum powder, 1-10 parts of Chinese yam powder and 1-10 parts of maltodextrin. The preparation method comprises the following steps: S1, preparing materials, namely crushing and sieving the raw materials, and weighing the prepared materials; and S2, mixing the raw materials, granulating, drying, tabletting, and packaging to obtain the kudzuvine root, rape and pollen bean composition. The pollen nutritional supplement has the characteristic that the functionality and the absorptivity of the pollen nutritional supplement can be enhanced.

The invention discloses supplementary pollination equipment for flower seed cultivation, and belongs to the field of flower pollination equipment.The supplementary pollination equipment comprises a powder spraying pipe body, a pollen storage bin is fixedly connected to the upper end of the powder spraying pipe body, a handle is fixedly connected to the right side of the lower end of the powder spraying pipe body, and a powder spraying driving assembly is arranged in the powder spraying pipe body; a worker pulls a pulling block to enable a sliding block to drive a first piston plate to move, during moving, a baffle is firstly attached to the interior of a powder spraying pipe body, gas in a gas shell is continuously compressed in the process, when the baffle moves to a circular groove, the gas can be rapidly sprayed out under the action of gas pressure, and the gas spraying effect is improved. According to the method, the sliding block can be slowly moved, and compared with the prior art that rapid extrusion is needed, rapid airflow can be generated under the condition that the sliding block is slowly moved, so that the device is more convenient to use, people cannot rapidly feel hand acid, and the using effect is improved.

The invention provides a method for rapidly determining the vitality of blueberry pollen, and relates to the technical field of blueberry pollen vitality detection. The method for rapidly determining the vitality of the blueberry pollen comprises the following specific steps: step 1, pollen collection: when blueberry flowers are in a big flower bud stage, picking the flowers into a self-sealing bag, putting the self-sealing bag into a preservation box with ice cubes, taking the preservation box back to a laboratory, and performing detection on the day; and step 2, preparing a PBS solution, namely fixing the volume of 3.16 g of monopotassium phosphate to 100 ml, fixing the volume of 2.28 g of dipotassium phosphate to 100 ml, preparing a mixed solution, and adding an acidic titration solution or an alkaline titration solution to prepare the PBS solution with the pH value of 7.0. TTC (2, 3, 5-triphenyltetrazole chloride) is dissolved in a PBS solution, a 1% TTC solution is prepared for dyeing, the blueberry pollen suspension prepared by the method can fully absorb a reaction solution to avoid pollen viability errors caused by individual differences, meanwhile, the blueberry pollen dyeing time can be 20 min, and the blueberry pollen viability detection time is greatly shortened.

The application provides a method for improving the germination rate and storage capacity of kiwi pollen, and belongs to the technical field of forest tree breeding. The method comprises the following steps: S1, placing the pollen of male kiwi flowers in 24-28 DEG C light treatment for 10-14 hours; S2, spreading the pollen treated in S1 on an in vitro germination medium for light culture; S3, observing the germination state of the pollen and calculating the survival rate of the pollen. According to the method, the pollen is first placed in 24-28 DEG C light pretreatment for 10-14 hours, so that the germination rate of the pollen is significantly higher than that of fresh pollen, and compared with the pollen without pretreatment, the method can further improve the pollen storage capacity of kiwi pollen under 4 DEG C and-20 DEG C storage conditions, and the decrease range of the pollen germination rate during storage is significantly reduced.

The application belongs to the technical field of plant extract separation, and particularly relates to pollen polysaccharide, a separation method thereof and application. The application extracts, separates and purifies polysaccharide in rape pollen, and obtains pollen polysaccharide component 3. The pollen polysaccharide component 3 has certain effects in the aspects of plant growth promotion and stress resistance.