21results about "Chemosterilants" patented technology

The invention provides an alcohol insect pheromone derivative, which takes a compound containing at least one active group such as carboxyl and amido as a carrier, and alcohol insect pheromone forms derivatives such as ester derivatives and anhydride derivatives with the compound through chemical reaction. The invention also provides a preparation method, application and a release method of the alcohol insect pheromone derivative. According to the alcohol insect pheromone derivative, alcohol insect pheromone is treated in a chemical reaction mode, the stability of the alcohol insect pheromone can be remarkably improved, slow release and controlled release of the pheromone can be achieved, the carrier material is wide in source, multiple in selectivity, convenient to use and economical, and in addition, the alcohol insect pheromone derivative can be used for preparing the alcohol insect pheromone derivative. The alcohol insect pheromone derivative provided by the invention can also realize combined release of various pheromones, so that trapping, prevention and control of various insects can be realized.

The invention discloses a small molecule RNA (Ribonucleic Acid) and application thereof in preventing and treating diaphorina citri. The inventor finds that the miRNA of the diaphorina citri, namely the RNA miR-7, has a nucleotide sequence of 5 '-UGAACACAGCUGGGUGGUAUCUC-3', and is highly expressed in an ovary and a head of the diaphorina citri. By feeding miR-7 agonist, the oviposition amount of diaphorina citri is remarkably reduced, ovarian development is abnormal, the titer of Candidatus Liberibacter asiaticum in the ovarian is remarkably reduced, and the miR-7 agonist has a good application prospect for preventing and treating diaphorina citri and then preventing and treating the Candidatus Liberibacter

The present invention relates to the chemical synthesis of cannalactone, an adaptation of this synthesis leading to deuterium labeling of cannalactone, and the use of deuterium-labeled cannalactone to perform the assay of natural cannalactone from exudates or tissues of the hemp plant.

The invention relates to a combined mouse and insect killing composition, a combined mouse and insect killing bait and a combined mouse and insect killing method for simultaneously inhibiting reproduction of field mice and killing ectoparasites of the field mice. The combined mouse and insect killing composition comprises ivermectin and atrazine, the weight ratio of the ivermectin to the atrazine is (1-9): (9-90). The mouse and insect combined killing bait comprises the mouse and insect combined killing composition and basic bait. The combined mouse and insect killing method comprises the step of applying the combined mouse and insect killing composition or the combined mouse and insect killing bait to wild mice. The mouse and insect combined killing composition and bait can control the population density of mice by inhibiting the reproductive system function of the mice in the field on the premise of not directly killing the mice, and meanwhile effectively kill parasites such as fleas, ticks and the like on the body surfaces of the mice, and block a disease transmission chain. Therefore, the combined mouse and insect killing composition and the bait have the combined control effects of inhibiting reproduction of field mice and killing ectoparasites of the field mice.

The invention discloses a formula and application of a compound infertility agent containing clarithromycin and quinestrol and based on CYP enzyme activity inhibition. The clarithromycin composition comprises clarithromycin, quinestrol and baits. The CYP enzyme inhibitor and the endocrine sterilant are combined for use, so that the synergist can effectively inhibit the activity of CYP enzyme in tissues such as livers of rats, the metabolic clearance rate of the sterilant is remarkably reduced, and the oral bioavailability and the system exposure level of the sterilant are improved. Therefore, when the same infertility effect is achieved, the use dosage of the infertility agent can be greatly reduced, so that the cost is saved, and the environmental load is reduced; or under the same dosage, a more thorough and more lasting population sterility effect can be obtained, and the practicability and competitiveness of a pest mouse sterility control technology are greatly improved.

The application discloses application of gelsevine in inhibition of oviposition of carpophilus humeralis. It is found that gelsevine has excellent inhibitory effect on oviposition of carpophilus humeralis, and can be applied to inhibition of oviposition of carpophilus humeralis, especially to prevention and treatment of carpophilus humeralis, and has certain research value, and provides a new method for prevention and treatment of carpophilus humeralis.

This invention belongs to the field of plant protection, specifically relating to the application of eugenol in the control of wheat aphid. The research of this invention demonstrates the repellent, contact-killing, and fumigation effects of eugenol on the agricultural pest wheat aphid. The effects of eugenol on the growth and development of the agricultural pest wheat aphid were assessed using sex life table software, evaluating key parameters of wheat aphid growth and development and population changes at sublethal concentrations. The results showed that eugenol treatment can adversely affect the growth and development of wheat aphids, such as reducing survival and reproductive rates, and decreasing population size. Furthermore, eugenol has a certain synergistic effect with commonly used insecticides. Therefore, this invention has application value in the control of wheat aphids.

The invention discloses a rodent sterilant synergist and application of the rodent sterilant synergist in preparation of sterilant bait. According to the invention, ketoconazole with relatively strong CYP enzyme inhibitory activity is taken as a synergist and is compounded with mifepristone and baits to form the compound sterilant for harmful rats. Wherein ketoconazole can effectively inhibit the activity of CYP enzyme, significantly reduce the metabolic clearance rate of mifepristone, improve the oral bioavailability of mifepristone, maintain the same sterility prevention and control effect, greatly reduce the use dosage of the sterilant, and realize reduction and synergy. The compound pest sterilant provided by the invention solves the problems of poor killing effect, short lasting effect, fast rebound, high cost, easy generation of drug resistance and accidental killing of natural enemies and non-target organisms in the existing single use of a steroid hormone sterilant, and provides a new solution for sustainable control of pest.

The invention belongs to the technical field of biological prevention and control of agricultural pests, and particularly relates to application of a collagen gene Col15 in regulation and control of chilo suppressalis female sterility and green prevention and control. The key effect of Col15 in development of ovaries of chilo suppressalis is disclosed for the first time through bioinformatics identification, expression profile analysis, RNA interference and CRISPR / Cas9 gene editing technologies. Through targeted inhibition or interference of gene expression, ovarian development can be severely blocked, collagenous fiber deposition is reduced, oocyte maturation is blocked, the mating rate, the egg laying amount and the egg hatching rate of female insects are remarkably reduced, and finally female sterility is achieved. The invention provides a brand new target and technical support for developing a novel green pest prevention and control technology based on female reproduction regulation, has the characteristics of accurate technical effect, environment friendliness and strong sustainability, and has wide application prospects in biological treatment of pests.

The invention relates to a novel amorphous natamycin, compositions comprising it, the use of amorphous natamycin or of the compositions in food, feed, crop or pharmaceutical products, and a manufacturing process to obtain the amorphous natamycin.

The invention relates to the technical field of wheat hybridization agents, in particular to a wheat chemical hybridization agent composition and a use method thereof. The composition is prepared from 2-(4-methoxy-6-methyl-1, 3, 5-triazine-2-yl methyl amino carbonyl amino sulfonyl) methyl benzoate, NE1820, gibberellic acid, sodium tetraborate and sodium dodecyl benzene sulfonate. Under the dosage of 3.6 kg / hm < 2 > of the chemical hybridization agent composition for wheat, the sterile plant rate is stabilized at 95-100%, and the emasculation effect is thorough; the method has no influence on the activity of wheat pistil, is normal in fruiting and almost has no phytotoxicity, and is generally effective for 23 varieties with different genotypes; cH1 is used as a mature herbicide, the price is far lower than that of a special hybridization agent, and the seed production cost can be greatly reduced. In conclusion, the chemical hybridization agent integrates the advantages of high efficiency, safety, broad spectrum, low price and the like, is an ideal novel wheat chemical hybridization agent with great application prospects, and provides a reliable solution for large-scale popularization of hybrid wheat.

The invention discloses a formula and application of a compound infertility agent containing ketoconazole and quinestrol and based on CYP enzyme activity inhibition. Ketoconazole, quinestrol and specific baits are compounded to form the reduction and synergism type compound rodent pest sterilant, ketoconazole can effectively inhibit CYP enzyme activity, obviously reduce the metabolic clearance rate of quinestrol and improve the oral bioavailability of quinestrol, and the use dosage of the sterilant is greatly reduced while the same sterility prevention and control effect is maintained. The compound pest sterilant provided by the invention solves the common problems of poor killing effect, short lasting period, fast rebound, high cost, easy generation of drug resistance, accidental killing of natural enemies and non-target organisms and the like existing in the existing single use of steroid hormone sterilant, and provides a new solution way for sustainable control of pest.

The application discloses application of alstonic acid B or gelsevitin VI in inhibition of oviposition of Amphicercidops beesleyi. It is found that alstonic acid B or gelsevitin VI has excellent inhibitory effect on oviposition of female Amphicercidops beesleyi, and can be applied to inhibition of oviposition of female Amphicercidops beesleyi, especially to prevention and control of Amphicercidops beesleyi, and has certain research value, and provides a new method for prevention and control of Amphicercidops beesleyi.

The agricultural composition is a granular material containing acetic acid, a biodegradable polymer miscible with acetic acid, and an inorganic additive. The agricultural composition may have a coating film that coats the granular material.

The present invention provides alcohol-type insect pheromone derivatives, wherein a compound containing at least one functional group such as a carboxyl group and an amide group acts as a carrier and is chemically reacted with an alcohol-type insect pheromone to form derivatives such as an ester derivative and an anhydride derivative. The present invention further provides a preparation method, a use, and a release method for the alcohol-type insect pheromone derivatives. The alcohol-type insect pheromone derivatives provided by the present invention, formed by means of chemically derivatizing an alcohol-type insect pheromone, significantly improve the stability of alcohol-type insect pheromones while also enabling the sustained release and controlled release of such pheromones. Carrier materials are widely available and offer a diverse range of options, providing convenience and cost-effectiveness. In addition, the alcohol-type insect pheromone derivatives provided by the present invention also enable the co-release of multiple pheromones, thereby allowing for a variety of insects to be trapped and managed.

Disclosed herein are methods for producing interfering RNA larvicides for Spotted Wing Drosophila, D. suzukii, such as microbial host organisms engineered to produce interfering RNA (iRNA) molecules which selectively undermine the survival of female D. suzukii larva, to produce a predominantly male population of adult SWD flies. Such iRNA molecules selectively inhibit the expression of a gene in female SWD larvae population by RNA interference. Also disclosed herein are polynucleotides, such as expression cassettes encoding iRNA molecules and facilitating integration, such as stable integration into the genome of a host cell. Further disclosed herein are compositions including the disclosed nucleotide sequences and host organisms, along with methods of using the same to generate a predominately male SWD population.

The invention belongs to the field of new application of medicines, and particularly relates to a medicine for inhibiting reproduction of female moths from carotene and application of the medicine. It is found for the first time that poison carotene can destroy synthesis of fatty acid in ovaries of female prodenia litura and inhibit the fertility of the female prodenia litura. The drug application designed based on the metabolic function of insects can avoid the drug resistance of conventional insecticides, and provides a new strategy for green control of pests.

The invention discloses a function and an application of virus source tyrosine phosphatase in development of male testis of plutella xylostella, namely an application of a protein tyrosine phosphatase gene CvBV22-9 coded by cotesia vestalis virus in induction of apoptosis of testis cells of larvae of plutella xylostella. According to the invention, the CvBV22-9 gene is screened and identified as a main factor for inducing testis apoptosis, and the gene is continuously and highly expressed in a parasitized testis tissue and has tissue specificity. After the expression of the CvBV22-9 is knocked down, the testis apoptosis rate is obviously reduced; and about 90.80% of testis cell apoptosis can be induced by using recombinant baculovirus to over-express the gene. The low-concentration recombinant baculovirus can also destroy the testis structure and lead to decrease of the egg laying amount of mating female insects. According to the invention, a transgenic fruit fly model is successfully constructed, specific expression of CvBV22-9 in fruit fly testis is realized by using a UAS-Gal4 system, and 97.30% of testis apoptosis is induced.

The invention relates to the technical field of genetic engineering, in particular to bemisia tabaci pectin methylesterase, a BtPME1 gene, dsRNA and application of the bemisia tabaci pectin methylesterase to prevention and treatment of bemisia tabaci. The amino acid sequence of the bemisia tabaci pectin methylesterase provided by the invention is as shown in SEQ ID NO. 2. Based on bemisia tabaci genome data in the early stage of a laboratory, a bemisia tabaci horizontal transfer gene is analyzed, it is found that a plant-derived horizontally-transferred pectin-like methylesterase coding gene BtPME1 exists in bemisia tabaci, and the amino acid sequence of pectin-like methylesterase expressed by the coding gene BtPME1 is shown as SEQ ID NO.2. After the BtPME1 gene is silenced, the survival rate and egg laying amount of bemisia tabaci on a host plant can be effectively reduced. The invention provides a new target for a bemisia tabaci green control technology based on RNA interference guidance, and opens up a new way for improving the insect resistance of crops.

The present invention relates to the chemical synthesis of cannalactone analogues, as well as the use of these analogues for stimulating the germination of seeds of parasitic plants.

The application provides a kind of disorienting agent for interfering with mating of Cornus fruit borer adult and application, the disorienting agent includes (Z)-7-eicosen-11-one one monomer compound or (Z)-7-eicosen-11-one, (Z)-7-tricosene two compound mixtures;In the mixture, (Z)-7-eicosen-11-one and (Z)-7-tricosene are used in a ratio of 2:1.The disorienting agent is applied, and needs to be prepared as disorienting silk and arranged in the field.The efficient and stable sex pheromone disorienting agent for interfering with mating of Cornus fruit borer adult provided by the application is strong in specificity, safe and environmentally friendly, easy to operate, efficient and economical, has a long effective period, can be used for large-area promotion and application in the field, reduces the use of chemical pesticides in the field, improves the safety of Cornus officinalis medicinal materials, and maintains the stability of ecological environment.