79 results about "Insemination" patented technology

The utility model provides an artificial insemination tube assembly, which belongs to the technical field of insemination tubes and comprises a storage tube, a push rod and an annular air bag, the push rod and the annular air bag are arranged on the storage tube, a feeding tube is arranged on the side wall of one end of the storage tube, and a seminiferous duct is mounted at one end of the storage tube. According to the insemination device, the annular air bag arranged on the outer side of the seminiferous duct expands while insemination is conducted, it is guaranteed that the device is fixed, meanwhile, the situation that semen flows back after insemination is effectively prevented, and then the probability of pregnancy is improved, meanwhile, two one-way valves are installed on the two sides of the annular air bag, and after the annular air bag completely abuts against the inner wall of a uterine cavity, the two one-way valves are closed. When the device is taken out, the other one-way valve is forced to be opened and closed to supplement air into the annular air bag from the outside in the subsequent process of taking out the device, so that the push plug is convenient to move to the initial position, and the safety of the device is improved. The subsequent addition and use of the seminal fluid are convenient.

The invention discloses a dairy cow timed insemination method for controlling ovulation time and improving embryo implantation rate, and relates to the technical field of dairy cow breeding. The problems that follicles on ovaries of postpartum cows are not synchronous in development, ovulation time cannot be accurately regulated and controlled, and embryonic development regulation and control after fertilization are lacked are solved. The method mainly comprises the following steps: three times of gonadotropin releasing hormone injection, two times of cloprostenol sodium injection, gonadotropin releasing hormone injection, luteinizing hormone releasing hormone A3 injection, timed artificial semen deposition, and VADE mixed liquid injection. GnRH is used for actively regulating follicular development, 95% or more of the dairy cows are synchronized after 2-3 rounds of starting, then timing insemination is performed, the conception rate of the postpartum dairy cows can be remarkably increased, compared with the prior art, the pretreatment time is short, the synchronous ovulation rate and conception rate of the dairy cows can be increased, the calving interval is shortened, and the survival rate of the dairy cows is increased. The economic benefit of the pasture is obviously increased, and the breeding management level can be improved on the basis.

The invention discloses a breeding method and device for breeding boars, belongs to the technical field of breeding of the boars, and aims to solve the problems that in order to prevent seminal fluid from flowing out after insemination, an external air source is often relied on, so that discomfort of sows is easily caused, and the success rate of fertilization is influenced. The problem that the pregnancy effect is affected due to the fact that a pipeline is left in the body for a long time and discomfort of a pig is easily caused is solved, the gel suppository can be attached to the irregular mucous membrane form of the cervix uteri inner opening after being expanded, leakage caused by reserved gaps is avoided, the expansion degree does not need to be manually controlled, the error-tolerant rate is higher, and the application range is wide. Meanwhile, the plugging mechanism of the gel suppository is made of a natural degradation material, can be naturally degraded and removed or discharged along with uterus peristalsis, has no long-term retention risk, can improve the vagina flushing effect, can simulate the action during mating in the vagina, facilitates fertilization reaction of sows and is more beneficial to successful fertilization.

The utility model discloses an artificial semen deposition catheter for a sheep body, which is characterized by comprising an auxiliary tube and a suction head, and the suction head is connected with an injector through the auxiliary tube; one end of the auxiliary pipe is provided with a connector, and the other end of the auxiliary pipe is provided with an inserting part; the suction head is in a hollow cone shape, the inner diameter of the large end of the suction head is in interference fit with the outer diameter of the connector, and the inserting part is connected with an injector. The artificial insemination catheter for the sheep body is good in heat preservation performance, the diameter of the insemination end is small, and the artificial insemination catheter can be easily inserted into the cervix of the ewe to improve the conception rate of artificial insemination.

The invention discloses an auxiliary reproductive semen treatment device matched with different insemination modes, which comprises a box body with an openable box door, a heating treatment table is arranged at the center of the bottom in the box body, and a treatment plate is placed on the heating treatment table; a control box is arranged at the top, a control circuit board is arranged in the control box, a heat dissipation plate and a display screen are arranged, and keys and knobs are arranged on the two sides; the back of the box is provided with a power interface. Through modular design, the device is compatible with semen treatment of various insemination modes such as IVF, ICSI and IUI; the first processing plate (transverse groove method) and the second processing plate (screen method) are used for screening sperms, through natural movement ability, form and thermotaxis guidance, mechanical damage is reduced, sperm motility is improved, sperm DNA fragment rate is reduced, and therefore ovum fertilization rate, embryo quality and pregnancy outcome are expected to be improved.

The invention relates to the technical field of animal husbandry, in particular to a synchronous oestrus-timing insemination method suitable for cattle, which comprises the following steps: firstly, performing intramuscular injection of PG (cloprostenol sodium) at different time points after calving to promote uterine recovery and luteolysis and lay a synchronous oestrus foundation; the method comprises the key steps that GnRH (gonadotropin release hormone) is given through intramuscular injection on the 43rd day, the 53rd day, the 60th day and the 69th day, pituitary is promoted to release follicle-stimulating hormone (FSH) and luteinizing hormone (LH), collection and screening of follicles are guided, follicle maturation is promoted, the oestrus uncovering rate and the oestrus conception rate are increased, a melatonin implant is implanted in a subcutaneous implantation mode on the 63rd day, and the melatonin implant is implanted in a subcutaneous implantation mode on the 63rd day. The synthesis of ovarian hormones is promoted by regulating the hypothalamus-pituitary-gonad axis, the secretion of follicle cell factors and maturation promoting factors is promoted, the development of granular cells is promoted, and the maturation of oocytes is promoted. According to the method, the pregnancy rate of a double-synchronization-timing insemination scheme which is most widely used in a large-scale dairy cow breeding pasture at present can be remarkably increased, and feasible technical support is provided for success of increasing the breeding efficiency of cows.

The invention discloses a timed insemination method for improving the pregnancy rate and the lambing rate of sheep, and belongs to the technical field of livestock breeding. In order to solve the problem that the pregnancy rate of existing sheep is unstable during regular insemination, the method comprises the steps that a progesterone sponge suppository is embedded in the vagina of a healthy and reproductive ewe on the 0th day, and meanwhile 25 g of luteinizing hormone is injected in an intramuscular mode to release hormone A3; removing the thrombus on the 12th day, and performing intramuscular injection of 400IU of pregnant mare serum gonadotropin at the same time; and after the suppository is removed, insemination is carried out on the cervix orifice of the ewe with ram semen diluted at the ratio of 1: (5-8) in 52h and 64h respectively. According to the method, ovarian activities of the ewes are regulated and controlled, the estrus synchronism and the ovulation rate are improved, tests show that the pregnancy rate reaches 81.6%, the lambing rate is 1.14, compared with a conventional method, the pregnancy rate and the lambing rate of the sheep are remarkably improved, and development of the sheep industry is promoted.

The present disclosure provides a microscopic insemination support device having a simple configuration. The present disclosure relates to a microscopic insemination support device that supports microscopic insemination in which sperm held by a sperm injection tool is injected into an egg held by an egg holding device. The microscopic insemination support device comprises an acquisition unit configured to acquire information including a relative positional relationship between the sperm injection tool and the egg, and a control unit configured to, on the basis of the information acquired by the acquisition unit, control movement of a stage on which the egg holding device is disposed so as to perform microscopic insemination by injecting sperm into the egg.

The invention belongs to the technical field of artificial insemination of bumblebees, and particularly relates to a male bumblebee sperm collecting device. The male bee seminal vesicle extraction platform is arranged on the base, the male bee seminal vesicle extraction platform is used for clamping the male bee seminal vesicle glass sheet, the male bee seminal vesicle glass sheet is used for placing a male bee seminal vesicle, and the male bee seminal vesicle extraction platform drives the male bee seminal vesicle glass sheet to move in the horizontal direction of the base; the insemination needle fixator is vertically arranged on the base in a lifting mode and used for fixing a glass needle, and the glass needle faces the male bee seminal vesicle glass sheet. Through the device, the extraction efficiency can be remarkably improved, so that the sperm exposure time is effectively shortened, and relatively high vitality is kept.

The invention relates to the technical field of livestock breeding, in particular to a boar mating assisting mating device which comprises an induction mechanism, the induction mechanism is arranged in a shell for boar mating, and the induction mechanism is used for inducing sows to enter the shell; the inducing mechanism comprises a supporting table, a belt conveyor and a food inducing box, the supporting table is fixedly connected into the shell, the belt conveyor is embedded in the middle of the supporting table, and the food inducing box is arranged on the upper surface of the belt conveyor. According to the auxiliary mating equipment for boar mating, the inducing mechanism is arranged, so that a sow can be conveniently induced to enter the shell, the sow can be limited in the shell in advance, in the process of limiting the sow, workers do not need to push the sow into a mating room in a time-consuming and labor-consuming mode, and the labor intensity of the workers is reduced. The sow can actively enter the shell along with the food inducing box under the inducing of the food inducing box, so that the mating process of the boar and the sow can be more convenient.

The application belongs to the technical field of fish genetic breeding, and specifically discloses an artificial induction method of Megalobranchius ambius and Culter alburnus hybrid triploid and application. The artificial induction method comprises the following steps: S1. taking Megalobranchius ambius as a female parent and Culter alburnus as a male parent to perform artificial dry insemination; S2. performing hydrostatic pressure treatment on the fertilized eggs, and the hydrostatic pressure treatment conditions are as follows: the starting time of treatment after fertilization is 2-3 min, the pressure is 35-50 MPa, and the duration is 3 min; S3. hatching the fertilized eggs and performing transfer culture, and the water temperature in the whole process from fertilization, hydrostatic pressure treatment, hatching to fry cultivation is controlled to be 22-24 DEG C; and Megalobranchius ambius and Culter alburnus triploid is screened through ploidy analysis. The method can successfully induce Megalobranchius ambius and Culter alburnus hybrid sterile triploid with superior growth performance, and based on comprehensive index evaluation, the best hydrostatic pressure treatment condition is obtained, high triploid rate (>80%) and high survival rate (>98%) are simultaneously achieved, and commercialized breeding production can be realized.

The invention belongs to the technical field of biology, and particularly discloses a chicken semen cryopreservation solution and a preparation method thereof. The chicken semen cryopreservation liquid comprises a cryoprotection liquid I and a cryoprotection liquid II. The freezing protection liquid I is prepared from the following components: glucose, sodium glutamate, potassium acetate, dipotassium phosphate, magnesium acetate, N, N-bis (2-ethoxyl)-2-aminoethanesulfonic acid and an antibiotic solution. And the freezing protection liquid II comprises dimethylformamide and nano zinc oxide. The invention discloses a chicken semen cryopreservation solution and a preparation method thereof, by applying the chicken semen cryopreservation solution, the fertilization and incubation performance of frozen semen is remarkably improved, centrifugation-free and direct semen deposition of the frozen semen are realized, and physical damage and activity reduction caused by the centrifugation process to sperms are avoided.

The utility model relates to a deep seminiferous duct for pigs. The deep seminiferous duct comprises an outer tube and an inner tube, and an end head is formed at one end, extending into the outer pipe, of the inner pipe. The end head comprises a hemisphere part and a column pipe part connected with the end part of the inner pipe. The hemisphere part is formed at the free end of the column pipe part. A first through hole is formed in the top wall of the hemisphere part, and a second through hole opposite to the first through hole in the radial direction is formed in the side wall of the column pipe part. According to the utility model, the sperm discharge hole structure at the end part of the inner tube is improved, so that the situation that the pregnancy success rate is reduced due to bending of the tube body at the end part of the inner tube can be inhibited.

The utility model belongs to the technical field of veterinary insemination devices, and particularly relates to a veterinary insemination tube ejector which comprises an outer sleeve and an inner needle tube, and the inner needle tube penetrates through the outer sleeve. The outer sleeve comprises a sleeve and a sleeve handle, the sleeve handle comprises a base and a cover plate, and the cover plate covers the front end of the base; a sleeve fixing groove, a semen deposition sleeve fixing groove and a clamping piece fixing groove are sequentially formed in the sleeve handle from back to front, a first semen deposition sleeve penetrating hole is formed in the cover plate, and the diameter of the first semen deposition sleeve penetrating hole is equal to the inner diameter of the semen deposition sleeve fixing groove. The sleeve is inserted into the sleeve fixing groove to be fixed and sequentially penetrates through the semen deposition sleeve fixing groove, the clamping piece fixing groove and the first semen deposition sleeve penetrating hole. A reset spring and an L-shaped clamping piece are arranged in the clamping piece fixing groove, the reset spring is located on the rear side of the L-shaped clamping piece, and the rear portion of the L-shaped clamping piece abuts against the front portion of the reset spring. A clamping piece reserved hole is formed in the side wall of the clamping piece fixing groove, and the L-shaped clamping piece penetrates through the clamping piece reserved hole. A second semen deposition sleeve penetrating hole is formed in the L-shaped clamping piece, and the sleeve penetrates through the second semen deposition sleeve penetrating hole. The inner needle tube comprises a long needle head and a push-pull handle, the long needle head is inserted into the sleeve, and the push-pull handle is arranged on the outer side of the rear end of the sleeve handle.

The invention relates to the technical field of breeding regulation and control of black goats, in particular to a hormone treatment method for inducing estrus synchronization of black goats, which comprises the following steps: placing a CIDR vaginal suppository containing 1.38-1.56 g of progesterone into the vagina of an ewe, and keeping for 12-14 days; 48 hours before the thrombus is removed, intramuscularly injecting a sustained release preparation of 330 IU follicle-stimulating hormone and 30% polyvinylpyrrolidone; when the thrombus is removed, intramuscularly injecting a mixed solution containing 330IU pregnant mare serum gonadotropin and 0.1 mg of cloprostenol; 24 hours after the thrombus is removed, 25 micrograms of luteinizing hormone is intravenously injected to release hormone A3; single-time artificial insemination is performed within 48-56 hours after injection, 0.5 ml of semen is left for each injection, and the number of effective sperms is not less than 1.5 * 10 < 8 >. By precisely regulating and controlling CIDR progesterone and multi-hormone stepped injection, the estrus synchronization rate of a group is larger than or equal to 95%, and the traditional synchronization bottleneck is broken through; insemination parameters are controlled and optimized management is carried out, each fetal live lamb is 2.5-3.0, and the breeding efficiency is improved; treatment is started 45-50 days after delivery, the lambing interval is 210 + / -10 days, and large-scale efficient breeding is assisted.

The utility model relates to the technical field of livestock and poultry artificial insemination, and discloses a distribution structure and a semen deposition gun, the distribution structure adopts a pump structure and is provided with a pump body and a piston rod, the piston rod is matched in a pump cavity of the pump body to realize automatic suction or pumping of semen with a preset volume, manual suction by an operator is not needed, and the labor intensity of the operator is reduced. Automatic semen transfer in the artificial insemination process is achieved, and the semen transfer efficiency is effectively improved.

The invention relates to the technical field of poultry breed conservation biology, and discloses a cryopreservation kit for chicken semen and a use method of the cryopreservation kit. The invention relates to a cryopreservation kit for chicken semen. The cryopreservation kit comprises a cryopreservation diluent, a cryoprotectant, an insemination diluent, a DMEM (dulbecco's modified eagle medium) and a frozen semen tube. The cryopreservation diluent in the kit provided by the invention can provide a better living environment for chicken sperms, and the cryoprotectant in the kit can successfully perform cryopreservation on the chicken sperms; when the kit provided by the invention is used for freezing and storing chicken semen, the unfrozen chicken semen is used for artificial insemination, the fertilization rate can reach 70% or above, and the requirement for breed conservation of chicken genetic resources is met.

1. Name of the product in this design: Vas deferens. 2. Purpose of this design: For use as a veterinary insemination tube. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application provides a dairy cow mating auxiliary device, which comprises two symmetrically distributed side frames, a front frame capable of clamping a neck of a cow is fixed between one end of the two side frames, the other end of one of the side frames is provided with a clamping ring with a circular ring structure, the ring wall of the clamping ring is a hollow structure, the inner ring wall of the clamping ring is made of elastic rubber material, and the ring wall of the clamping ring is connected with a gas pressure adjusting device capable of adjusting the gas pressure in the ring wall. In the artificial insemination process, the labor intensity of the staff can be reduced without artificial hand pulling of the cow tail, and the stability of the cow tail clamped by the inner ring wall is relatively high, so that the cow tail cannot break away from the clamping ring even if the cow resists and swings the tail.

The invention relates to a grouper crossbreeding method. The method comprises the four steps of parent breeding, temperature-sensitive domestication, artificial spawning and insemination, incubation and fry breeding, specifically, cold water-based clear water stone spots and hot water-based brown spot stone spots are selected as parents, the clear water stone spots are used as female parents, the brown spot stone spots are used as male parents, and the middle water temperature is adapted through gradient temperature-sensitive domestication; stress-resistant feed containing hilsa herring egg source peptide and haematococcus pluvialis astaxanthin ester and a temperature-sensitive blender are matched, a reproductive care agent is supplemented to strengthen sperm and egg performance, and normative spawning induction, insemination and graded cultivation processes are adopted. According to the method, the problems of poor water temperature adaptation and low hatching rate of grouper hybrid sperms and eggs in different temperature areas are solved, the wide-temperature property of filial generations is improved, the method adapts to the water temperature of 18-28 DEG C, the hatching rate, the fry survival rate, the adult fish survival rate and the average weight of single fish are remarkably improved, and technical support is provided for industrial application.

The present application relates to the field of animal breeding technology, in particular to the application of ursolic acid in the frozen semen preservation of sheep. The present application applies ursolic acid in the frozen semen preservation of sheep. The addition of 0.5-2.0 micromole / L ursolic acid in the frozen diluent can improve the quality of frozen semen preservation of sheep and goats, and can improve the sperm motility and vitality after thawing, which helps the thawed sperm to pass through the vagina, uterus and enter the oviduct to complete fertilization, improves the insemination success rate of frozen sperm, and provides technical support for strengthening the protection of local sheep breed resources.

The invention discloses a method for inducing gynogenesis of Sinilabeo notabilis by white crucian carp sperms and application thereof, and the method for inducing gynogenesis of Sinilabeo notabilis by white crucian carp sperms comprises the following steps: (1) collecting and diluting white crucian carp sperms, and then carrying out inactivation treatment by ultraviolet lamp irradiation; (2) mixing the inactivated seminal fluid of the carassius auratus and the inactivated mature eggs of the sinilabeo nolatus, performing dry insemination, then pouring the mixture into cold water for treatment, putting fertilized eggs into a normal-temperature water incubation tank for incubation after cold treatment is finished, and keeping running water to enable the fertilized eggs to float along with water flow and not to sink to the bottom; and (3) after fry are hatched from the fertilized eggs, culturing to obtain gynogenetic sinilabeo nolabeo. According to the method, the carassius auratus sperms are adopted to induce the gynogenesis of the semilabeo nolabeo to successfully breed and obtain the gynogenesis semilabeo nolabeo offspring, which is the first time in the artificial induction gynogenesis and germplasm improvement of the semilabeo nolabeo. In the breeding process, it is found that the 6-month-old semilabeo notabilis has the advantages that the growth speed is high, and the low-temperature resistance is remarkably higher than that of the parent semilabeo notabilis.

The invention relates to the technical field of poultry breeding, and discloses a disinfection structure and an artificial insemination gun, an ultraviolet light source is adopted to emit ultraviolet light to irradiate the periphery of an insemination pin, so that the surface of the insemination pin is disinfected after each insemination, the insemination pin is prevented from being polluted, cross infection is avoided, and the artificial insemination gun is safe and reliable. Therefore, the health of the poultry during the continuous insemination operation can be guaranteed.

The utility model relates to a sheep artificial insemination cage which comprises a cage body and a clamping assembly arranged in the cage body and used for fixing sheep, the cage body is of a transverse cuboid frame-shaped structure, an opening and closing door is arranged on the rear portion of the cage body, a fence and a feeding trough are arranged on the front portion of the cage body, and partition plates are arranged on the two sides of the cage body respectively. The clamping assembly comprises a sheep neck clamp arranged on a fence on the front portion of the cage body. An independent cage body structure is adopted, a corresponding mechanism for fixing sheep is arranged in the cage, the sheep can be effectively fixed in the actual insemination process, insemination operation is facilitated, and contact infection between the sheep can be effectively avoided through the independent cage body.

The utility model discloses a semen deposition device for sow fertilization. The semen deposition device comprises a semen deposition tube, a semen storage bag and a sealing head used for sealing semen. The semen deposition pipe comprises a filling opening with the top being open, a rod part and a semen deposition part, a liquid inlet is formed between the rod part and the filling opening, and a liquid outlet is formed between the rod part and the semen deposition part. The utility model relates to the technical field of veterinary inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating inseminating Even if the low-temperature wax melts in advance due to the influence of high temperature, the seminal fluid is protected by a gel layer, so that the seminal fluid can be effectively prevented from overflowing in advance.

The utility model relates to the technical field of animal reproduction, and discloses an animal reproduction semen deposition auxiliary device which comprises a fixing assembly. The fixing assembly comprises a base, and pulleys are symmetrically arranged at the bottom of the base; the supports are symmetrically arranged on the top of the base. The cover plate is arranged at the top of the bracket; the hydraulic rods are symmetrically arranged at the top of the cover plate and penetrate through the cover plate; according to the semen deposition auxiliary device for animal reproduction, an animal is erected on the top of a second limiting block, after placement is completed, a motor is started to drive a lead screw to rotate, so that the second limiting block is adjusted to be lifted up, a hydraulic rod is started to drive a first limiting block to descend, and the animal on the top of the second limiting block is extruded and fixed; the animal is clamped on the inner side of the second limiting block and the inner side of the first limiting block, in this way, even if the animal is mad during insemination, the animal cannot be disengaged from the top of the second limiting block, an insemination worker is protected, safety is improved, and meanwhile working efficiency is improved.

The invention provides a method for increasing the hatching rate of fertilized eggs of Epinephelus yunnanensis, and belongs to the technical field of fish culture. The method comprises the following steps: S1, parent cultivation and male transformation: selecting five-year-old Epinephelus lanceolatus without seminal fluid as a male parent to perform indoor circulating water cultivation, and inducing male transformation in a cooperative mode of feeding a feed containing methyltestosterone, injecting follicle-stimulating hormone and periodically increasing and decreasing water temperature in the cultivation process; s2, male fish screening: regularly checking the male conversion rate in the parents in the step S1, screening the male fishes with qualified maturity, and screening the male fishes with qualified sperm maturity from the male fishes with qualified maturity; s3, insemination and incubation: collecting the seminal fluid of the male fishes screened in the step S2 for artificial insemination of the eggs of the epinephelus moara, and incubating the fertilized eggs. According to the method, the problems of small male fish quantity, insufficient seminal fluid and low fertilized egg hatching rate in artificial breeding of groupers are solved.

The invention discloses a composition and method for improving the ovulation concentration ratio of sows in batches and application, and belongs to the technical field of livestock breeding. The method provided by the invention comprises the following steps of: applying a composition containing taurine or a derivative thereof and lactic acid or a derivative thereof to the sow in a period from 7 to 21 days before injecting an ovulation promoting medicine to the end of hybridization, and implementing single-time timed insemination after injecting the ovulation promoting medicine buserelin. The composition can remarkably improve the ovulation concentration ratio of sows in batches, guarantee time synchronism of sperm-egg combination, further reduce the number of oestrus identification times during regular insemination, successfully realize single-time regular insemination, reduce labor, consumables, semen and boar feeding cost, and improve the breeding efficiency of the sows. And synchronous delivery is promoted, and the executability and efficiency of all-in and all-out batch production are improved.

The invention is suitable for the technical field of artificial insemination equipment, and provides accurate positioning insemination equipment for artificial insemination of mutton sheep. A mounting groove is formed in the flow guide sleeve, the mounting groove extends and penetrates in the length direction of the flow guide sleeve, and an injector for storing semen is arranged in the mounting groove; the injector comprises an injector body and an injection rod, and the injection rod is inserted into the injector body; an extending pipe is arranged at the output end of the injector; the rotating seat is rotationally arranged at the end part of the flow guide sleeve; the first micro camera is arranged at one end, away from the rotating seat, of the guide sleeve; the second micro camera is arranged at the output end of the extending pipe; the driving mechanism is arranged between the rotating seat and the injector and is used for driving the injector to move or inject; and a display device. The first micro camera, the second micro camera and the display device are arranged to be matched so that semen can be accurately injected to a proper position, meanwhile, the grab handle is arranged, operation can be achieved with one hand, operation is easy, and use is convenient.

The invention relates to a method for distant sexual hybridization of plants, which comprises the following steps: selecting a good variety of a sexual propagation plant type expected to be obtained as a hybridization female parent, castrating before male flowers are mature, treating female flowers before insemination and carrying out reproduction isolation, selecting sperms of any interspecific and farther organisms with characters of the variety expected to be obtained, and carrying out distant sexual hybridization on the selected sperms. And adding a distant hybridization agent, uniformly stirring to form a sperm, inseminating the female parent, taking back a fertilized embryo, carrying out embryo rescue, culturing into a seedling, carrying out chromosome doubling on the obtained seedling, and transplanting into soil. In the mature period, harvesting true hybrids according to individual plants, and cultivating F2 and later generations by using a pedigree method until homozygosis. The bottleneck of distant sexual hybridization is broken through, high-yield and high-quality varieties can be cultivated, and the method has wide application prospects.