478 results about "Pheromone signaling" patented technology

The invention discloses a sex pheromone composite for luring prodenia litura and a luring core thereof. The sex pheromone composite is characterized in that: the sex pheromone composite consists of the following components of sex pheromone and phenylacetaldehyde, wherein the sex pheromone consists of cis-9,trans-11-tetradecadienoic acetate and cis-9,trans-13-tetradecadienoic tetradecadienoic which are mixed in a mass ratio of 3-13: 1; and the phenylacetaldehyde is used as a synergist and accounts for 20 to 60 percent of the total mass of the components. The invention also discloses a related luring core. The researches of the invention prove that the phenylacetaldehyde can greatly improve the technology of luring and killing prodenia litura by sex pheromone, solves the problem of low control efficiency caused by multiple mating of the prodenia litura in the prior art, plays an important role in and has a great significance for the control, detection and reporting of the sexual luring insects such as the prodenia litura.

The invention discloses a dark melolonthidae sex pheromone and a sex attractant. The sex pheromone comprises the following components: L-isoleucine methyl ester, (R)-(-)-linalool and 1-cyclohexane amino acid with the weight ratio of 2-9:1:0-1. The sex attractant comprises the dark melolonthidae sex pheromone and organic solvents; and the weight ratio of the sum of all components in the dark Melolonthidae sex pheromone and the organic solvents is 1:2.2-100. The dark melolonthidae sex pheromone is beneficial to protecting natural enemies, benefiting and eliminating pests, giving full play to integrated control power and improving the control effect when being used for forecasting insects and preventing dark melolonthidae pests by using a trapping method and an interference mating method; and in addition, the application of chemical pesticides is avoided so as to reduce the pollution, protect the environment and ensure remarkable economic benefits, social benefits and ecological benefits. The invention is suitable for the control of the dark Melolonthidae pests in farmlands.

The invention relates to the field of chemical synthesis of inset sex pheromone, in particular to a synthesizing method of oriental fruit moth sex pheromone 8(Z/E)-dodecylene-1-alcohol acetate. The method comprises the following steps of: reacting 8-hydroxy octyl triphenylphosphine salt with strong base to generate corresponding sodium alcoholate salt; continuously reacting the sodium alcoholate salt with the strong base to generate ylide reagent; performing Witting reaction on the ylide reagent with n-butanal under the action of mixed solvent of large-polar solvent and small-polar solvent to obtain the important midbody 8(Z/E)-dodecylene-1-alcohol of inset sex pheromone, and then acetylizing to obtain the 8(Z/E)-dodecylene-1-alcohol acetate. The synthesizing method has easily obtained materials, simple operation, common-use solvent, good selectivity and high activity for inducing inset sex pheromone, and the proportion of Z/E-8-dodecylene-1-alcohol acetate is as high as 95:5. The invention is suitable for large-scale industrial production.

The invention belongs to the technical field of Ectropis oblique prevention and cure, and in particular relates to a composition of Ectropis oblique sex pheromone, a lure of the composition and a use method of the lure. The composition of Ectropis oblique sex pheromone is composed of Z3Z6Z9-gadusene and Z3Z9-6,7-epoxy-octadecadienoic acid at the ratio of 6:(4-1):9; the above compositions are mixed to obtain a sex pheromone solution; the sex pheromone solution is added into a releasing carrier to obtain the lure; the obtained lure is fixed on an insect sticking plate to obtain a trapper; and the trapper is arranged in a tea garden and is positioned higher than the top end of a tea tent. The composition of Ectropis oblique sex pheromone and the lure of the composition have strong specifity on the male moth of the Ectropis oblique. According to the invention, the maximum occurrence period of insect pests can be effectively monitored to avoid blindly spray pesticide; in addition, the composition of Ectropis oblique sex pheromone and the lure have a better prevent and cure effect and can effectively protect and utilize the natural enemies of the insect pests.

The invention discloses a simple stereoselective synthesis method of sex pheromones of hyphantria cunea, which relates to epoxypropane compounds. The sex pheromones of hyphantria cunea III[(9S,10R)-9,10-epoxy-(3Z,6Z)-3,6-heneicosenediene] and IV[(9S,10R)-9,10-epoxy-(3Z,6Z)-3,6-heneicosenetriene] are prepared from cheap and readily available 2-propargyl alcohol serving as raw materials by eight steps with high efficiency, high enantioselectivity and high yield, wherein the total yield of (9S,10R)-III is 36 percent; the total yield of (9S,10R)-IV is 33 percent; and enantiomer excess e is more than 99 percent. The method has the advantages that: the operation and separation of each step are simple; the yield is high; all the adopted reagents are common reagents which are cheap and readily available; and the production line is short. The method is suitable for industrial production.

The invention provides an insecticidal composition capable of high-precisely and efficiently controlling homoptera pests. The insecticidal composition comprises one or two insecticides and one sex pheromone of homoptera pests. Through the synergetic effect between sex pheromone and insecticides, the pests can be precisely killed, the waste of insecticide is reduced during the using process, the utilization rate of insecticide is improved, the cost of insecticide for farmers is reduced, the service life of chemical pesticide is prolonged, and the resistance of pests to pesticide is weakened.

Soybean volatile compounds, soybean aphid-induced volatile compounds and soybean aphid sex pheromones are semiochemicals of the invention used to suppress soybean aphid population. Methyl salicylate is an embodiment of a soybean aphid-induced volatile compound useful in the invention. Benzaldehyde is an embodiment of a soybean host plant volatile compound useful in the invention. Also useful as sex pheromones are nepetalactol and nepetalactone. The compounds may be blended in a preferred embodiment.

Disclosed is the compound 6-vinyldecanal and its use as a sex pheromone synergist. The invention also includes a composition of matter, comprising 6-vinyldecanal and an agriculturally acceptable carrier. The invention further includes a composition suitable for attracting insects, comprising 6-vinyldecanal and an insect sex pheromone, as well as traps containing such a composition.

The invention provides a synthetic method for an American white moth sex pheromone. 2-propargyl alcohol which is cheap and easy to obtain is used as a raw material, the American white moth sex pheromone a (9S,10R)-9,10-epoxy-(3Z,6Z)-3,6-heneicosadiene is synthesized in a high enantioselectivity and high yield, and enantiomer excess e.e. achieves 99% or more. According to the synthetic method for the American white moth sex pheromone, the production process is safer, the costs are low, the selectivity is higher, and the synthetic method is more energy-saving and environmentally friendly.

The present invention relates to a preparation method of 8 (Z/E)-dodecylene-1-yl acetate of pheromone of oriental fruit moth of pests of fruit trees of the lep-idoptera tortricidae. In the method, 1, 8-octandiol is used as raw material, treated through unilateral bromination with hydrobromic acid, acetylated and transformed into aldehyde with N-oxidated pyridyl; finally the 1, 8-octandiol and bromide butyl triphenyl have the Scholer-Wittig reaction to synthesize the target compound. The method has the advantages of raw materials that can be easily prepared, simple process, mild conditions, high yield, low cost, suitability for large-scale production, and so on. The method provides necessary conditions for the wide application of the pheromone of oriental fruit moth to replace chemical pesticides so as to prevent and treat the pests of fruits, and has higher theoretical significance and excellent application value.

The present invention discloses a prodenia litura sex pheromone composition and a prodenia litura sex pheromone lure, wherein the prodenia litura sex pheromone composition comprises two components such as cis-9,trans-11-tetradecadienyl acetate and tetradecenal according to a mass ratio of 50:1-1:50, and the prodenia litura sex pheromone lure comprises the prodenia litura sex pheromone composition and a releaser for holding and slowly releasing the prodenia litura sex pheromone composition. According to the present invention, the prodenia litura sex pheromone composition and the prodenia litura sex pheromone lure have strong specificity for male prodenia litura, and do not trap and kill female prodenia litura and other insects; and with the prodenia litura sex pheromone composition and the prodenia litura sex pheromone lure, the high-incidence season of the pest generation can be effectively monitored, the blind pesticide spraying can be avoided, the good prevention control effect is provided, and the natural enemies of pests can be effectively protected and used.

The invention discloses a reverse sex pheromone for interfering plutella xylostella l. mating, and belongs to the biological prevention and control field. The reverse sex pheromone is one or more of cis-11-cetylenol trifluoromethyl ketone, cis-11-cetylenol difluoromethyl ketone, cis-11-hexadecene-1-propionate and cis-11-hexadecene-1-tertiary butyl acetate. The reverse sex pheromone can significantly inhibit orientation of plutella xylostella l. male adults on female sex pheromone, thereby interfering plutella xylostella l. mating, and reducing the field insect population number. The reverse sex pheromone has the advantages of high efficiency, multiple ecological effects, simple preparation, environmental friendliness, safety to mammals and the like, can reduce the field male and female meeting probability and mating frequency, so as to relieve harm of plutella xylostella l. on cruciferous plants.

The invention discloses a stereoselective synthetic method of tea geometrid sex pheromone and relates to a stereoselective synthetic method of propylene epoxide compounds. The tea geometrid sex pheromone is I [dextrorotation-(3Z, 9Z, 6R, 7S)-6, 7-epoxy octadecadiene] and an enantiomer II [sinistrogyration-(3Z, 9Z, 6S, 7R)-6, 7-epoxy octadecadiene]. According to the invention provides the stereoselective synthetic method of tea geometrid sex pheromone provided by the invention, cis-2-butene-1, 4-glycol (1) is taken as raw material, the efficiency, the yield and the enantioselectivity are high, the operation and the separation are simple, the yield is high, the using reagents are all commonly used, so that the tea geometrid sex pheromone is cheap and easy to obtain, a protecting group does not need to be used, and the preparation procedures are few, so that the tea geometrid sex pheromone is suitable for batch production.

The invention relates to a method for preventing and controlling cigarette beetles in a cigarette factory. The method for preventing and controlling the cigarette beetles in the cigarette factory is characterized by comprising the following steps of: (1) preparing a solid insect-preventing material; and 2) constructing a three-dimensional insect-preventing system comprising the steps of: (1) arranging the solid insect-preventing material on surface of a wall and an interlayer of a ceiling in a manufacturing shop of the cigarette factory and visible parts on surface of a slit and surface of a ventilating pipeline in the manufacturing shop of the cigarette factory; and (2) arranging the solid insect-preventing material in a wire pipe and a wire slot in the manufacturing shop of the cigarette factory and on invisible parts in holes and slits in the manufacturing shop of the cigarette factory as well as invisible parts on the inner surface of the ventilating pipeline; and arranging traps containing sex pheromone on the solid insect-preventing material in the interval of 10-50m so as to induce the cigarette beetles to approach and touch pesticide on the solid insect-preventing material. The method provided by the invention has the characteristics of low cost, easiness in control and no corrosion or pollution.

The invention relates to a sex attractant for fruit tree pest Grapholitha molesta Busck and belongs to the technical field of control on the fruit tree pest Grapholitha molesta Busck. Effective ingredients of sex pheromones of the Grapholitha molesta Busck comprise (Z8)-dodecen-1-acetate, (E8)-dodecen-1-acetate, (Z8)-dodecen-1-ol, (E8, E10)-dodecadien-1-ol, dodeca-1-ol and tetradeca-1-ol, the ingredients of the sex pheromones are mixed with a sustained release solution to form a sex pheromone solution, the sex pheromone solution is added to a release carrier, and a lure and an isotropic tube can be obtained. When the sex attractant is applied to peach orchards and pear orchards, the lure has very strong trapping effect on the Grapholitha molesta Busck, the isotropic tube can significantly interfere with mating activities of female Grapholitha molesta Busck and male Grapholitha molesta Busck, the sex attractant is used for controlling the fruit tree pest Grapholitha molesta Busck and shows the excellent control effect, and the pest-damaged fruit rate of the orchards is greatly reduced.

The invention provides a Hyphantria cunea Drury attractant composition, its application and attracting core. The Hyphantria cunea Drury attractant composition includes Hyphantria cunea Drury sex pheromone and its synergistic agent. The synergistic agent contains one or more of the following plant source smell components: beta-ocimene, hexanal, cis-3-hexenal, diacetone alcohol, diisopropylcarbinol, 6-methyl-5-heptene-2-one, trans-3-hexenol, o-xylene, hemimellitene, trans-2-hexenal, and limonene. The attractant composition provided in the invention can be prepared into an attracting core so as to be used cooperatively with the existing Hyphantria cunea Drury sex pheromone. The invention provides the attracting core containing the Hyphantria cunea Drury attractant composition to prevent, control and detect Hyphantria cunea Drury, so that the defects of high cost and difficult popularization of imported and domestic Hyphantria cunea Drury sex pheromone attracting cores in the prior art are solved. The attracting core provided in the invention has the advantages of low cost, flexible use, and higher trapping efficiency.

The invention relates to a sex pheromone composition for luring citrus leaf miner and a luring core thereof, which is characterized by comprising cis-7, cis-11, trans-13-hexadecatrienoic aldehyde, cis-7,cis-11-hexadecadienoic aldehyde, cis-7-hexadecene aldehyde according to mass proportion of 1-100:0-100:1-10 to produce the sex pheromone luring core. Each luring core within the dosage range of 40 micrograms to 1333 micrograms is effective, the general dosage for optimum trapping is 400 micrograms, the luring core is capable of maintaining for 45 days in field. A proper basin and a glued trap for grouping and trapping male moths of the citrus leaf miner are cooperated for solving the prevention and prediction of sexual luring insects such as the citrus leaf miner.

The invention provides a method for luring Chrysopa sinica Tjeder to restrict Toxoptera aurantii Boyer by synomone from tea shoots and aphid sex pheromones. According to the invention, the synomone from tea shoots and the aphid sex pheromones are taken as basic components to prepare a Chrysopa sinica Tjeder trapping agent, which is used to lure the Chrysopa sinica Tjeder to trap an important injurious insect, Toxoptera aurantii Boyer, of the buds and leaves of tea trees, and used chemical pesticides can be reduced and even avoided so as to alleviate the pollution. The Chrysopa sinica Tjeder is the dominant species natural enemy of the Toxoptera aurantii Boyer, and by using the trapping agent to lure and guide the Chrysopa sinica Tjeder to restrict the Toxoptera aurantii Boyer, the predation efficiency can be improved, and the potency can be protected and utilized. The method provided by the invention protects the biodiversity, uses the pheromone substances to lure the important natural enemy, Chrysopa sinica Tjeder, to trap the Toxoptera aurantii Boyer effectively in a tea garden, protects and utilizes the natural enemy resources, and is simple and convenient to implement and low in cost.