12 results about "Jasmonic acid methyl ester" patented technology

The invention discloses an insecticidal composition containing entomopathogenic virus and jasmonic acid methyl ester or jasmonic acid, and relates to the technical field of biological insecticide, the active ingredients of the insecticidal composition are entomopathogenic virus and jasmonic acid methyl ester or jasmonic acid, and the entomopathogenic virus is nuclear polyhedrosis virus of baculoviridae. The weight ratio of the virus to the jasmonic acid methyl ester or jasmonic acid is 1: (0.5-1000), and the insecticidal composition can be prepared into dosage forms such as a suspending agent, water dispersible granules, wettable powder and the like. The invention also provides a method for preventing and treating lepidoptera pests, which comprises the step of applying the entomopathogenic virus and methyl jasmonate or jasmonic acid to target pests or a living environment of the target pests in a combined manner, and the combined application is simultaneous application or successive interval application. The insecticidal composition has a synergistic effect on lepidoptera pests such as cotton bollworms and beet armyworms, can obviously reduce the food intake, accelerate the death of pests and improve the field control effect, and has a wide application prospect.

The invention relates to a composition for preventing and treating tobacco black shank and application. The composition comprises methyl jasmonate, absolute ethyl alcohol and mancozeb. In the composition disclosed by the invention, the jasmonic acid methyl ester and the mancozeb can have a relatively good synergistic effect, the jasmonic acid methyl ester can enhance lignification of cell walls, and the mancozeb can inhibit germination of pathogenic bacteria of steamed stuffed buns in the same time and further block invasion of hyphae, so that a relatively good prevention and treatment effect is achieved.

The invention provides a method for improving fruit quality and aroma component content of Rotai white apricots, and belongs to the technical field of fruit tree cultivation. The method comprises the following steps: uniformly spraying a methyl jasmonate solution on a whole tree in a fruit expansion period of the Huazi white apricot until liquid drops are uniformly distributed on leaves and fruits; the concentration of the jasmonic acid methyl ester solution is 3-7 mmol / L. The fruit quality, such as the weight of a single fruit, the content of soluble solids, the content of soluble sugar and the content of vitamin C, of the Huantai white apricots can be remarkably improved, fruit texture parameters are improved, aroma components are enriched, the variety and the content of volatile metabolites are increased, and the characteristic aroma components are determined by substances with the odor activity value (rOAV) larger than 1, such as 4-(2, 6, 7, 8-tetramethyl-4-piperidine). According to the preparation method, 2, 3, 6-trimethylcyclohexenyl)-3-butene-2-ketone and beta-ionone are added, so that the fruit flavor quality and commercial value of the Ningtai white apricots are effectively enhanced.

The invention provides a saline-alkali resistant protective agent for pasture crops and a use method thereof. Based on the synergistic effect of jasmonic acid methyl ester, glucose, monopotassium phosphate and fulvic acid, two application modes of seed soaking or leaf surface spraying can be flexibly adopted according to planting requirements, and the multiple physiological regulation function of alfalfa and oat plants in the saline-alkali environment is achieved. The protective agent can activate plant stress-resistant gene expression pathways, effectively remove reactive oxygen free radicals caused by saline-alkali stress, reduce damage of oxidative stress to cell membranes, remarkably improve the activity level of an antioxidant enzyme system, synchronously promote biosynthesis of osmotic regulation substances, synergistically solve ion poison, osmotic stress and energy deficiency and improve the survival rate of plants. Therefore, chloroplast pigment content is effectively increased, and plant photosynthesis efficiency is enhanced. According to the invention, a'molecule-cell-rhizosphere 'multi-stage defense mechanism is formed through the synergistic matching effect of the components, and the saline-alkali resistant agent has the advantages of good saline-alkali resistant effect, low cost and high environmental compatibility.

The invention discloses a tea tree exogenous induced insect-resistant agent based on synergistic interaction of jasmonic acid methyl ester and salicylic acid as well as a preparation method and application of the tea tree exogenous induced insect-resistant agent, and belongs to the technical field of biological control. Based on the synergistic interaction of jasmonic acid methyl ester and salicylic acid, tea geometrid and tea lesser leafhopper are repelled, and parasitic wasps and hoverflies in a tea garden are lured. Synergistic interaction is achieved through the specific proportion of jasmonic acid methyl ester and salicylic acid, a tea tree jasmonic acid and salicylic acid double insect-resistant signal pathway is activated, the total amount and the component fraction of volatile matter generated through induction are remarkably higher than those generated through single elicitor treatment, the population number of pest natural enemy parasitic wasps in a tea garden can be increased by 1.52 times through field tests, and the pest control effect is good. The number of hoverfly populations is increased by 1.33 times, the number of tea lesser leafhopper populations is reduced by 40.5%, the number of tea geometrid populations is reduced by 60%, and the insect-resistant effect can be maintained for 15 days.

The invention belongs to the technical field of pear young fruit freezing prevention, and particularly relates to a star-shaped cationic nano-carrier and a preparation method thereof, a prepared nano-pesticide and application of the nano-pesticide in pear freezing prevention. The star-shaped cationic nano-carrier is obtained by carrying out amidation reaction on branched polyethyleneimine and tung oil at high temperature, the nano-carrier and jasmonic acid methyl ester can spontaneously form a stable nano-structure in a water phase, namely the star-shaped cationic jasmonic acid methyl ester nano-pesticide, and the nano-pesticide can overcome the technical bottlenecks that jasmonic acid methyl ester is easy to volatilize and easy to photodecompose; the long-term stable storage of the active ingredients is realized, the good adhesiveness is realized, and meanwhile, the anti-freezing capability of the young pears can be improved.

The invention relates to the technical field of fertilizer production, in particular to a fertilizer for increasing the alkaloid content of thunberg fritillary bulb and a preparation method of the fertilizer. The invention relates to a preparation method of a fertilizer for increasing the alkaloid content of thunberg fritillary bulb. The preparation method comprises the following steps: preparing a methyl jasmonate compound; preparing a chitosan compound; and preparing the fertilizer for improving the alkaloid content of the thunberg fritillary The preparation method comprises the following steps: pretreating attapulgite, loading methyl jasmonate by using the pretreated attapulgite to prepare a methyl jasmonate compound, and adding the methyl jasmonate compound into a fermented fertilizer, so that the methyl jasmonate can induce the activity of phenylalanine ammonialyase, lysine decarboxylase and other enzymes in the thunberg fritillary bulb to be enhanced, thereby enhancing the fertilizer activity. According to the present invention, the conversion of the precursor substance to the alkaloid is accelerated, such that the alkaloid content of the fritillaria thunbergii is increased, and the loading effect of the attapulgite can avoid the failure of the jasmonic acid methyl ester due to rapid volatilization, decomposition or loss.

The invention relates to the technical field of sculellaria barbata culture, in particular to a sculellaria barbata culture medium and a preparation method thereof The sculellaria barbata culture medium is prepared from an MS culture medium and a basic raw material according to the mass ratio of (6-7): 1, and the basic raw material is prepared from the following raw materials in parts by weight: 2-4 parts of novel nano silicon dioxide, 0.05-0.08 part of cerous nitrate, 1-2 parts of an organic fungicide, 0.7-0.8 part of 6-benzyladenine, 0.2-0.4 part of alpha-naphthylacetic acid, 0.1-0.3 part of jasmonic acid methyl ester and 2-4 parts of a functional additive. According to the invention, cell wall stability is enhanced and hormone slow release regulation is realized through novel nano silicon dioxide, and cerium nitrate is improved to activate a flavonoid compound synthetase system; the organic fungicide inhibits pathogenic bacteria and promotes nitrogen conversion by secreting lipopeptide antibiotics and nitrogenase systems; and the functional auxiliary agent realizes efficient retention and stable release of the active components.

A deodorant aerosol composition comprising an activated aluminium sesquichlorohydrate, a C14-C18 branched-chain hydrocarbon and a fragrance comprising one or more components selected from limonene, dihydromyrcenol, linalool, benzyl acetate, citronellol, linalyl acetate, alpha-methyl ionone, gamma undecalactone, methyl dihydrojasmonate and hexyl cinnamal.

The invention discloses a preparation method of an insect pest prevention chemical fertilizer for vegetables, and relates to the field of chemical fertilizers. Nano silicon dioxide is used as a silicon fertilizer main body, the nano silicon dioxide, sodium bicarbonate and calcium citrate are subjected to spray drying to prepare composite particles, the composite particles are mixed with the self-made pH response insect pest prevention microcapsules and then sprayed to vegetable leaf surfaces, when pests eat the composite particles, acidic substances in oral saliva react with components in the composite particles to enable local pH to be increased, the microcapsules are promoted to be broken, and the insect pest prevention effect is achieved. Terpenoids and jasmonic acid methyl ester are rapidly released, feeding and physiological activities of pests are inhibited, and meanwhile vegetables are induced to start a defense mechanism; the pH response insect pest prevention microcapsule is prepared by taking oxidized paraffin prepared by a biological enzyme catalytic oxidation method as a main wall material, wrapping a core material by adopting an oil-in-water emulsification method, and performing chemical crosslinking on the core material and a polylactic acid-maleic anhydride copolymer, and can quickly release the core material in a weakly alkaline environment and slowly release the core material in a daily process to realize long-acting insect pest prevention. The insect pest prevention chemical fertilizer for vegetables prepared by the invention has an insect pest prevention effect.

Belonging to the technical field of edible fungus cultivation, the invention discloses a composite base material for promoting growth of edible fungi, which specifically comprises the following components: a main material composed of 35-45 parts of weed tree sawdust and 20-30 parts of corncob, a nitrogen source auxiliary material composed of 2-7 parts of bran and 1-3 parts of corn flour, a mineral additive composed of 1-3 parts of gypsum and 0.3-0.8 part of calcium carbonate, and an auxiliary material composed of 1-3 parts of gypsum and 0.3-0.8 part of calcium carbonate. An antibacterial functional auxiliary material and 1-3 parts of a supported zeolite functional bag; wherein the bacteriostatic functional auxiliary material is prepared from 3-8 parts of tea seed meal, 8-12 parts of coffee grounds, 3-8 parts of water chestnut hull powder, 2-7 parts of bran and 1-3 parts of corn flour through microbial agent fermentation pretreatment, and the supported zeolite functional bag is prepared from zeolite supported jasmonic acid methyl ester, algal polysaccharides and magnesium sulfate. Through material innovation and process innovation, the technical bottlenecks that infectious microbe pollution is difficult to control, the use of chemical pesticides is limited, nutrient supply is unbalanced, natural antibacterial materials are difficult to use and the like are overcome.