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WO2025079403A1 - Agent induisant une résistance aux températures élevées, et procédé induisant une résistance des plantes aux températures élevées - Google Patents

Agent induisant une résistance aux températures élevées, et procédé induisant une résistance des plantes aux températures élevées Download PDF

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Publication number
WO2025079403A1
WO2025079403A1 PCT/JP2024/033292 JP2024033292W WO2025079403A1 WO 2025079403 A1 WO2025079403 A1 WO 2025079403A1 JP 2024033292 W JP2024033292 W JP 2024033292W WO 2025079403 A1 WO2025079403 A1 WO 2025079403A1
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Prior art keywords
high temperature
temperature resistance
plant
inducer according
compound
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English (en)
Japanese (ja)
Inventor
創 江口
豊一 鈴木
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AGC Inc
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Asahi Glass Co Ltd
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Publication of WO2025079403A1 publication Critical patent/WO2025079403A1/fr
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
    • A01N35/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals

Definitions

  • the present invention relates to a heat tolerance inducer and a method for inducing heat tolerance in plants.
  • Patent Document 1 discloses that high-temperature tolerance inducers include unsaturated carbonyl compounds such as hydroxyacrolein, ethyl vinyl ketone, and 2-hexenal.
  • Patent Document 2 also discloses a high-temperature resistance inducer that includes a support in which an active ingredient containing one or more compounds having a boiling point or sublimation point of 200°C or less is supported on a porous material.
  • the properties of the porous material may affect the stability of the active ingredient.
  • improvement in the high-temperature resistance inducer in terms of improving the stability of the active ingredient as well as the durability of the effect under high-temperature conditions.
  • the present invention provides a plant high temperature tolerance inducer and a method for inducing high temperature tolerance in plants, which have excellent stability of the active ingredient, including an unsaturated carbonyl compound.
  • a plant high temperature tolerance inducer comprising a support in which an active ingredient, which is one or more unsaturated carbonyl compounds having a boiling point or sublimation point of 200°C or less, is supported on a porous material,
  • the plant high temperature tolerance inducer wherein the pH of an aqueous solution obtained by mixing 10 parts by mass of the support with 90 parts by mass of water and stirring at 25°C for 5 minutes is 4.1 or higher at 25°C.
  • the high temperature resistance inducer according to [1] wherein the unsaturated carbonyl compound is an unsaturated aldehyde compound.
  • the silica is porous silica, The high temperature resistance inducer according to [6] or [7], wherein the average primary particle size of the silica is 5 to 1,100 ⁇ m.
  • a method for inducing high temperature tolerance in a plant comprising applying the high temperature tolerance inducer according to any one of [1] to [15] to the plant.
  • a method for inducing high temperature tolerance in a plant comprising: placing the high temperature tolerance inducer according to any one of [1] to [15] in a container having an opening or in a packaging material having breathability; and placing the container or the packaging material on the ground or on the water surface around a plant having stomata.
  • a method for inducing high temperature tolerance in a plant comprising placing the high temperature tolerance inducer according to any one of [1] to [15] in a container having an opening or a breathable packaging material, and attaching the container to a plant or a support.
  • a method for inducing high temperature tolerance in a plant comprising spraying the high temperature tolerance inducer according to any one of [1] to [15] above on the ground or water surface around the plant.
  • a method for inducing high temperature tolerance in a plant comprising fixing the high temperature tolerance inducer according to any one of [1] to [15] above onto a surface of a sheet or tape, and placing the sheet or tape on the ground or water surface around the plant.
  • a method for inducing high temperature tolerance in a plant comprising fixing the high temperature tolerance inducer according to any one of [1] to [15] above onto a surface of a sheet or tape, and attaching the sheet or tape to a plant or a support.
  • the present invention provides a plant high temperature tolerance inducer and a method for inducing high temperature tolerance in plants, in which the active ingredient, which contains an unsaturated carbonyl compound, is highly stable.
  • the "boiling point” and the “sublimation point” are values at normal pressure (1 atm).
  • the numerical range indicated by “to” means that the numerical range includes the numerical range before and after it as the lower limit and upper limit.
  • the high-temperature resistance inducer for plants is a high-temperature resistance inducer for plants, which contains a support in which an active ingredient, which is one or more unsaturated carbonyl compounds having a boiling point or sublimation point of 200°C or less, is supported on a porous material, and the aqueous solution obtained by mixing 10 parts by mass of the support with 90 parts by mass of water and stirring for 5 minutes has a pH of 4.1 or more at 25°C.
  • the active ingredient has the effect of inducing high temperature resistance in plants.
  • the active ingredient is one or more unsaturated carbonyl compounds (hereinafter, also referred to as "compound A") having a boiling point or sublimation point of 200° C. or less.
  • the active ingredient may contain one or more types of compound A.
  • Compound A has a boiling point or sublimation point of 200° C. or lower, and can therefore vaporize (evaporate or sublime) in the plant's growing environment (eg, 0 to 50° C.).
  • the boiling point or sublimation point of compound A is preferably 175° C. or lower, more preferably 150° C. or lower.
  • the lower the boiling point or sublimation point the easier it is to evaporate after application, and the greater the usefulness of the present invention.
  • the boiling point or sublimation point of compound A is preferably 80° C. or higher, more preferably 100° C. or higher, in terms of the duration of the effect.
  • the upper limit and the lower limit of the boiling point or sublimation point of the compound A may be combined in any manner.
  • the boiling point or sublimation point of the compound A is preferably 80° C. or higher and 200° C. or lower, more preferably 80° C. or higher and 175° C. or lower, and even more preferably 100° C. or higher and 150° C. or lower.
  • Compound A may be either a liquid or a solid at 25°C.
  • Compound A can be appropriately selected from unsaturated carbonyl compounds known to have a high-temperature tolerance inducing effect in plants, the compounds having a boiling point or sublimation point of 200° C. or less.
  • An example of a compound having a high temperature resistance inducing effect in plants is an unsaturated carbonyl compound such as an unsaturated aldehyde.
  • Specific examples of the unsaturated carbonyl compound include those described in JP 2011-157307 A and WO 2016/031775 A.
  • the unsaturated aldehyde compound is preferred as compound A.
  • the unsaturated aldehyde compound is preferably a compound represented by the following formula 1.
  • R 1 -CH CH-CHO Formula 1
  • R 1 is a hydrogen atom, a hydroxyl group, or an alkyl group having 1 to 9 carbon atoms.
  • the alkyl group in R1 may be linear or branched.
  • compounds in which R 1 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms are preferred.
  • Examples of unsaturated aldehyde compounds with a boiling point or sublimation point of 200°C or less include 2-hexenal (boiling point 146°C), 2-butenal (boiling point 105°C), 2-pentenal (boiling point 126-130°C), and 2-heptenal (boiling point 166°C).
  • the content of the active ingredient is preferably 0.1 to 10 mass% relative to the total mass of the porous material, and more preferably 1 to 5 mass%.
  • the content of the active ingredient can be determined by extracting the active ingredient from the porous body with a solvent capable of dissolving the active ingredient, and analyzing the obtained extract by gas chromatography (e.g., Agilent 7890A).
  • the porous material is a carrier that carries the active ingredient.
  • a porous material is used that has a pH of 4.1 or more at 25°C when the aqueous solution obtained by mixing 90 parts by mass of water with 10 parts by mass of the support and stirring for 5 minutes is obtained.
  • the upper limit of the pH is preferably 9.0, more preferably 8.0.
  • the pH range is preferably 4.1 to 9.0, more preferably 5.0 to 8.0, and particularly preferably 5.0 to 7.0.
  • unsaturated carbonyl compounds are less likely to be oxidized.
  • the pH 9.0 or less, denaturation of the porous body can be prevented.
  • the porous material As a porous material having such properties, it is possible to use the porous materials listed below that have been washed with water or an alkaline aqueous solution.
  • the water may be distilled water.
  • the alkaline aqueous solution may be an aqueous sodium bicarbonate solution.
  • the pH of the alkaline aqueous solution at 25°C is preferably greater than 7.0 and less than 9.0. When the pH of the alkaline aqueous solution at 25°C is greater than 7.0 and less than 9.0, the pH of the porous material can be controlled within an appropriate range.
  • the porous material may be silica.
  • silica means a compound containing silicon oxide.
  • Examples of silica include porous silica such as silica gel, diatomaceous earth, mesoporous silica, zeolite, montmorillonite, boiling stone, porous glass, kaolinite, sericite, illite, glauconite, chlorite, and talc.
  • the silica is preferably at least one selected from the group consisting of porous silica, zeolite, and montmorillonite, more preferably porous silica, and even more preferably silica gel.
  • the high temperature resistance inducer may contain other porous materials besides silica.
  • the proportion of silica is preferably 50% by mass or more, more preferably 80% by mass or more, even more preferably 90% by mass or more, particularly preferably 95% by mass or more, and may be 100% by mass, based on the total mass of silica and other porous materials.
  • the upper and lower limits of the silica proportion may be arbitrarily combined. When the proportion of silica to the total mass of silica and other porous materials is within the above range, sustained release and stability of the active ingredient tend to be better.
  • the average primary particle size of the porous material is, for example, preferably 1 to 3,000 ⁇ m, and more preferably 5 to 1,100 ⁇ m.
  • the average primary particle size of the porous material can be controlled using a sieve shaker or the like.
  • the average primary particle size of the porous material is the 50% cumulative volume particle size measured under solution conditions using a particle size distribution meter (e.g., Multisizer 4e, manufactured by Beckman Coulter, Inc.).
  • the specific surface area of the porous material is preferably 100 to 1,000 m 2 /g.
  • the specific surface area of the porous material is more preferably 200 to 1,000 m 2 /g, and even more preferably 420 to 1,000 m 2 /g.
  • the specific surface area of the porous material is 1 to 3,000 m 2 /g, the residual rate of compound A is high and the effect can be improved.
  • the specific surface area of the porous material is 420 to 1,000 m 2 /g, the residual rate of compound A is higher and the effect can be further improved.
  • the specific surface area is measured by a gas adsorption method.
  • a specific surface area measuring device manufactured by Shimadzu Corporation, product name 3Flex
  • 100 mg of the sample is set
  • N 2 is used as the adsorption gas
  • the specific surface area is measured under a cryogenic condition.
  • the pore volume of the porous material is, for example, 0.01 to 10 mL/g, 0.05 to 3 mL/g, or even 0.1 to 1.7 mL/g.
  • the pore volume is measured by the Barrett-Joyner-Halenda (BJH) method. Specifically, a pore distribution measuring device (e.g., Shimadzu Corporation, 3Flex) is used, 100 mg of a sample is set, and the pore volume is measured under cryogenic conditions.
  • the pore diameter of the porous material is, for example, 0.5 to 1,000 nm, further 0.5 to 100 nm, further 1 to 25 nm. The pore diameter is measured by a gas adsorption method.
  • a specific surface area measuring device e.g., Shimadzu Corporation, 3Flex
  • 100 mg of a sample is set, and the pore diameter is measured under cryogenic conditions.
  • the oil absorption of the porous material is, for example, 1 to 1,000 mL/100 g, further 10 to 500 mL/100 g, further 40 to 300 mL/100 g.
  • the oil absorption is measured by the boiled linseed oil method.
  • the porous material is mixed with boiled linseed oil in small amounts, and when it becomes possible to roll it into a spiral shape using a spatula, the amount of boiled linseed oil used per 100 g of the porous material is measured and used as the oil absorption.
  • the shape of the porous material is not particularly limited, and examples thereof include particulate, block, film, pellet, and honeycomb shapes. From the viewpoint of availability, particulate shapes are preferred. Examples of the particle shape include spherical shapes such as perfect spheres and oval spheres, needle shapes, scale shapes, and irregular shapes.
  • the average particle size of the porous material is, for example, 0.1 to 1,000 ⁇ m, 4 to 1,000 ⁇ m, or even 0.5 to 300 ⁇ m.
  • the average particle size is the 50% cumulative volume particle size measured under solution conditions using a Coulter counter (e.g., Multisizer 4e, manufactured by Beckman Coulter, Inc.).
  • silica gel is preferable from the viewpoint of safety.
  • the average primary particle size of the silica gel is preferably, for example, 5 to 1,100 ⁇ m.
  • the average particle size of the silica gel can be measured by a method for measuring the average primary particle size of a porous material.
  • the average primary particle size of the silica gel can be controlled using a sieve shaker or the like.
  • the specific surface area of silica gel is, for example, 30 to 1,000 m 2 /g, 100 to 1,000 m 2 /g, 150 to 1,000 m 2 /g, 200 to 1,000 m 2 /g, or even 420 to 1,000 m 2 /g.
  • the specific surface area of silica gel can be measured in the same manner as the specific surface area of a porous material.
  • the pore volume of the silica gel is, for example, 0.05 to 3 mL/g, 0.2 to 2.5 mL/g, or even 0.5 to 1.7 mL/g.
  • the pore volume of the silica gel can be measured in the same manner as the pore volume of the porous material.
  • the pore diameter of the silica gel is, for example, 0.5 to 100 nm, 2 to 50 nm, or even 3 to 25 nm.
  • the pore diameter of the silica gel can be measured in the same manner as the pore diameter of the porous material.
  • the oil absorption of silica gel is, for example, 10 to 500 mL/100 g, 50 to 450 mL/100 g, or even 100 to 300 mL/100 g.
  • the oil absorption of silica gel can be measured in the same manner as the oil absorption of a porous material.
  • Preferred porous materials may be silica gel with a pH range of 4.1 to 9.0, 5.0 to 8.0, or 5.0 to 7.0.
  • the high temperature tolerance inducer may further contain a hydrophobic compound.
  • the hydrophobic compound when supported on the porous material together with the active ingredient, can suppress the rapid outflow of the active ingredient even in an environment in contact with water, thereby realizing a high temperature tolerance inducer for plants that has excellent durability.
  • the hydrophobic compound is a compound different from the above-mentioned active ingredient.
  • the hydrophobic compound has a boiling point of more than 200°C.
  • the boiling point of the hydrophobic compound is preferably 250°C or higher, and more preferably 300°C or higher. The higher the boiling point, the less likely it is to evaporate after application, and the greater the effect of suppressing the sudden outflow of the active ingredient.
  • the upper limit of the boiling point of the hydrophobic compound is not particularly limited, but may be, for example, 500°C.
  • the upper and lower limit values of the boiling point of the hydrophobic compound can be arbitrarily combined.
  • the boiling point of the hydrophobic compound is preferably more than 200°C and less than 500°C, more preferably 250°C or higher and less than 500°C, and even more preferably 300°C or higher and less than 500°C.
  • the hydrophobic compound may be a liquid or a solid at 25°C.
  • the hydrophobic compound is preferably at least one selected from the group consisting of vegetable oil, mineral oil, and wax ester.
  • vegetable oil include olive oil, linseed oil, corn oil, sesame oil, perilla oil, rapeseed oil, rapeseed oil, butter, rice bran oil, rice oil, palm oil (including hydrogenated palm oil), margarine, soybean oil, and sunflower oil.
  • Wax ester means a compound in which a long-chain fatty acid having 10 or more carbon atoms and an aliphatic alcohol having 8 or more carbon atoms are ester-bonded.
  • wax ester include wax (e.g., soybean wax, palm wax, beeswax, and white wax).
  • the solubility of the hydrophobic compound in water is preferably less than 10 g/100 mL, and more preferably 1 g/100 mL or less. If the solubility of the hydrophobic compound in water is less than 10 g/100 mL, the active ingredient can be prevented from suddenly flowing out even in an environment where the active ingredient comes into contact with water.
  • the lower limit of the solubility of the hydrophobic compound in water is not particularly limited, but is, for example, 0.001 g/100 mL.
  • the solubility of the hydrophobic compound in water is preferably 0.001 g/100 mL or more and less than 10 g/100 mL, and more preferably 0.001 g/100 mL or more and 1 g/100 mL or less.
  • the solubility of hydrophobic compounds in water can be measured by measuring dissolved organic carbon concentration (DOC).
  • DOC dissolved organic carbon concentration
  • the content of the hydrophobic compound is preferably 1 to 200% by mass, more preferably 5 to 50% by mass, even more preferably 7 to 20% by mass, and particularly preferably 7 to 9% by mass, relative to the total mass of the porous material. If the content of the hydrophobic compound is 1 to 200% by mass, the rapid outflow of the active ingredient can be suppressed even in an environment where it comes into contact with water.
  • the loading rate of the active ingredient is, for example, preferably 0.1 to 10 mass %, and more preferably 1 to 5 mass %, based on the total amount of the support.
  • the support rate of the active ingredient can be determined by extracting the active ingredient from the support with a solvent capable of dissolving the active ingredient, and analyzing the obtained extract by gas chromatography (for example, 7890A manufactured by Agilent).
  • the high temperature resistance inducer may further contain other components (excluding the hydrophobic compound) other than the active ingredient and the porous material, as necessary, within the scope of not impairing the effects of the present invention.
  • the high temperature resistance inducer contains other components, the other components may or may not be supported on a support.
  • other components include a compound other than compound A that has the effect of inducing high temperature resistance in plants (hereinafter referred to as compound B), an antioxidant, a coupling agent, and a binder.
  • compound B is a compound having a boiling point or sublimation point above 200°C.
  • the ratio of compound A to compound B is not particularly limited.
  • compound A may be 1% by mass or more, or even 10% by mass or more, with respect to the total mass of compound A and compound B, and may be 100% by mass, which is the upper limit.
  • the upper limit and lower limit of the ratio of compound A can be arbitrarily combined. When the ratio of compound A to the total mass of compound A and compound B is equal to or more than the above lower limit, the effect of inducing high temperature resistance in plants can be sufficiently exerted.
  • the high temperature resistance inducer can be obtained by washing the porous material with water or an alkaline aqueous solution and allowing the washed porous material to support one or more active ingredients, which are compounds A.
  • the method for washing the porous material with water or an alkaline aqueous solution is not particularly limited, and an example of the method is to add the porous material to water or an alkaline aqueous solution and stir to wash it.
  • the water or alkaline aqueous solution used is as described above.
  • the washed porous material is preferably dried before loading the active ingredient. Any known method can be used to dry the porous material. For example, thermal drying can be used. Conditions for thermal drying include a temperature of 50°C to 500°C and a drying time of 1 to 10 hours.
  • the method for supporting the active ingredient is not particularly limited, and any known method can be appropriately adopted.
  • the support can be obtained by contacting the active ingredient with a porous material together with a liquid medium having a boiling point lower than the boiling point or sublimation point of compound A, and then drying (removing the liquid medium) at a temperature lower than the boiling point or sublimation point of compound A.
  • the high temperature resistance inducer includes a hydrophobic compound
  • the active ingredient and the hydrophobic compound may be contacted with the porous material simultaneously or separately.
  • the active ingredient and the hydrophobic compound are contacted with the porous material separately, it is preferable to contact the active ingredient with the porous material and then contact the hydrophobic compound with the porous material.
  • the liquid medium may be any medium capable of dissolving or dispersing the active ingredient.
  • the amount of the liquid medium used is, for example, 10 to 10,000 parts by mass, or even 100 to 1,000 parts by mass, per 100 parts by mass of the carrier.
  • the method for contacting the active ingredient and the liquid medium with the porous material is not particularly limited, and known methods such as immersion, spraying, etc. can be applied.
  • the contact time is sufficient to allow the active ingredient to be sufficiently impregnated into the porous material, and can be appropriately adjusted depending on the size, material, etc. of the porous material.
  • a support can also be obtained by a method in which only the active ingredient is brought into contact with a porous material.
  • the obtained carrier may be formulated into any dosage form together with other ingredients.
  • the carrier is formed into any dosage form, the dosage form is not particularly limited, and examples thereof include tablets, fine granules, films, blocks, sheets, and tapes including adhesive layers, etc. Known methods can be used as the forming method.
  • the obtained heat tolerance inducer may be placed in a container or packaging material for application to plants.
  • compound A vaporizes and diffuses through the air to reach the plant, thereby inducing high-temperature tolerance. Therefore, the container or packaging material is preferably breathable or has one or more openings that communicate between the inside and outside of the container, so that the vaporized compound A can be released outside the container.
  • the container or packaging material may be provided with attachment members for attaching the container or packaging material to a plant or any support.
  • the high temperature tolerance inducer is applied to a plant to induce high temperature tolerance in the plant.
  • high temperature tolerance in the plant can be induced.
  • High temperature injury refers to the adverse effect that high temperatures have on plant growth.
  • High temperature damage to horticultural plants reduces their quality and yield, including dwarfism, insufficient growth, insufficient sugar content, and short stems in head-forming horticultural plants, as well as malformation and poor color of flowers.
  • High temperature resistance is a resistance function to withstand high temperatures.
  • the plant to which the high-temperature resistance inducer is applied is not particularly limited as long as it is capable of inducing high-temperature resistance with compound A.
  • the plant to which the high-temperature resistance inducer is applied is typically a plant having stomata, and is preferably an agricultural or horticultural plant.
  • Specific plants include, for example, cereals (rice, barley, wheat, rye, oats, corn, etc.), beans (soybeans, adzuki beans, broad beans, peas, peanuts, etc.), fruit trees and fruits (apples, citrus fruits, pears, grapes, peaches, plums, cherries, walnuts, almonds, bananas, strawberries, etc.), vegetables (cabbage, tomato, eggplant, spinach, broccoli, lettuce, onion, green onion, green pepper, etc.), root vegetables (carrots, potatoes, sweet potatoes, radishes, turnips, etc.), These include crops for processing (cotton, hemp, paper mulberry, Mitsumata, rapeseed, beets, hops, sugar cane, sugar beet, olives, rubber, coffee, tobacco, tea, etc.), melons (pumpkin, cucumber, watermelon, melon, etc.), pasture grasses (orchard grass, sorghum, tim
  • the high-temperature tolerance induction method of the present invention includes applying the high-temperature tolerance inducer of the present invention to a plant.
  • a known method can be applied as a method for applying the high-temperature tolerance inducer to a plant.
  • a method can be used in which silica gel carrying an active ingredient is placed in a container having an opening or a packaging material having breathability, and the silica gel is placed around the plant.
  • the container or packaging material may be placed on the ground or water surface around the plant.
  • the water surface may be the water surface of a paddy field.
  • the container or packaging material may be attached to a plant or any support.
  • the high-temperature tolerance inducer may be sprayed on the ground or water surface around the plant without being placed in the packaging material having breathability or a container having an opening.
  • the high-temperature tolerance inducer may be fixed to the surface of a sheet or tape, and the sheet or tape may be placed on the ground or water surface around the plant.
  • the high-temperature tolerance inducer may be fixed to the surface of a sheet or tape, and the sheet or tape may be attached to a plant or a support.
  • the application amount of the high-temperature tolerance inducer can be appropriately set depending on the type of active ingredient, temperature, humidity, atmospheric pressure, and the optimal concentration for the target plant.
  • the application amount is set to about 0.001 to 0.1 ppm of 2-hexenal in the atmosphere.
  • the heat tolerance inducer may be mixed into soil or other fertilizers, or the mixture may be placed on or in the ground around the plants.
  • Example 1 Silica gel (FUJISORB G-A510) manufactured by Fuji Silica Co., Ltd., which is a porous material, was crushed with a hammer and then sieved with a standard sieve to have the particle size shown in Table 1. The crushed silica gel was washed with distilled water and thermally dried at 120°C for 24 hours to obtain the silica gel shown in Table 1.
  • Example 2 A high temperature resistance inducer was obtained in the same manner as in Example 1, except that silica gel (FUJISORB G-AT40) manufactured by Fuji Silica was used as the porous material.
  • silica gel (FUJISORB G-AT40) manufactured by Fuji Silica was used as the porous material.
  • Example 8 A high-temperature tolerance inducer was obtained in the same manner as in Example 2, except that washing with distilled water was not carried out.
  • ⁇ Measurement of active ingredient loading rate> 5 g of a mixed solvent of chloroform:methanol 9:1 (volume ratio) was added to the vial containing the high temperature resistance inducer, and the mixture was stirred for 1 minute to extract the active ingredient carried. Hexadecane was added as an internal standard substance, and the resulting mixture was filtered. The resulting filtrate (extract containing the internal standard substance) was analyzed by gas chromatography, and the amount of the active ingredient carried (mg) was calculated using a calibration curve previously prepared using hexadecane as an internal standard. The carrying rate (%) of the active ingredient in the high temperature resistance inducer (100%) was calculated from the amount carried (mg) and the mass of the high temperature resistance inducer placed in the vial.
  • ⁇ Sustained release of active ingredients> The vial containing the high-temperature resistance inducer was left uncapped in an environment of 50°C and 40% humidity for 7 days. After leaving it still, the active ingredient loading rate (%) was determined in the same manner as in ⁇ Measurement of active ingredient loading rate> above, except that the solvent used for extraction was changed to deuterated chloroform and deuterated methanol. The active ingredient remaining rate was calculated using the following formula, and evaluation was performed according to the following evaluation criteria. The "initial active ingredient content" in the formula is the value determined in the above ⁇ Measurement of active ingredient loading rate>.
  • Active ingredient residual rate (%) Active ingredient retention rate (%) after standing for 7 days in an environment of 50°C and 40% humidity / Initial active ingredient retention rate (%) x 100 Evaluation Criteria A: The remaining rate (%) of active ingredient is 80% or more. B: The remaining rate (%) of active ingredient is 10% or more and less than 80%. C: The remaining rate (%) of active ingredient is less than 10%.
  • ⁇ Oxidation resistance of active ingredients The initial amount of the active ingredient (mol) was calculated from the amount (mg) of the high temperature resistance inducer used in the test and the loading rate (%) of the active ingredient obtained in ⁇ Measurement of the loading rate of the active ingredient>.
  • the filtrate obtained in the above-mentioned ⁇ Active ingredient sustained release> was analyzed by 1 H-NMR (BRUKER Ascend NMR 400) to determine the ratio of the integral value of the ⁇ hydrogen of the carbonyl of the active ingredient at around 6.1-6.2 ppm to the integral value of the ⁇ hydrogen of the carbonyl of the compound obtained by oxidation of the active ingredient at around 5.8-5.9 ppm (when the active ingredient is 2-hexenal, 2-hexanoic acid), and the abundance ratio (mol) of the active ingredient and the compound obtained by oxidation of the active ingredient was calculated.
  • Example 8 In the high temperature resistance inducer of Example 8 using a porous material with a pH of 4.0, the acid resistance evaluation of the active ingredient was low. In other words, it is considered that the oxidation reaction of the active ingredient was promoted by the effect of the acid catalyst. In contrast, in the high temperature resistance inducers of Examples 1 to 7, which used porous materials with a pH of 7.0, the acid resistance evaluation of the active ingredient was high.
  • the high-temperature resistance inducer of the present invention has excellent stability of the active ingredient containing an unsaturated carbonyl compound. Therefore, by placing the high-temperature resistance inducer of the present invention directly or in any formulation on the ground or water surface around a plant having stomata, or by attaching it to the plant or any support, it is possible to prevent a decline in the quality and yield of the plant.

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  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Toxicology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'agent induisant une résistance des plantes aux températures élevées de l'invention contient un support tel qu'un principe actif consistant en au moins une sorte de composé carbonyle insaturé ayant un point d'ébullition ou un point de sublimation inférieur ou égal à 200°C, est supporté par un matériau poreux. 90 parties en masse d'une eau sont mélangées à 10 parties en masse dudit support. Le pH à 25°C d'une solution aqueuse obtenue par agitation pendant 5 minutes, est supérieur ou égal à 4,1. De préférence, le composé carbonyle insaturé consiste en un composé aldéhyde insaturé. Également de préférence, le composé aldéhyde insaturé consiste en un ２－hexenal, un ２－butenal, un ２－pentenal ou un ２－heptenal.
PCT/JP2024/033292 2023-10-13 2024-09-18 Agent induisant une résistance aux températures élevées, et procédé induisant une résistance des plantes aux températures élevées Pending WO2025079403A1 (fr)

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JP2023-177578 2023-10-13
JP2023177578 2023-10-13

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS349500B1 (fr) * 1956-05-31 1959-10-23
JPH04295402A (ja) * 1991-03-25 1992-10-20 Lion Corp 除草剤組成物
KR20150025564A (ko) * 2013-08-29 2015-03-11 이동하 해충 방제용 서방형 루어의 제조방법
WO2016031775A1 (fr) * 2014-08-25 2016-03-03 国立大学法人神戸大学 Agent améliorant la tolérance des plantes
JP2022024524A (ja) * 2020-07-28 2022-02-09 株式会社エーアンドエーマテリアル 抗菌消毒性担持体及びその製造法
WO2023074526A1 (fr) * 2021-10-26 2023-05-04 Ａｇｃ株式会社 Agent induisant une tolérance à la chaleur pour plantes et procédé pour induire une tolérance à la chaleur de plantes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS349500B1 (fr) * 1956-05-31 1959-10-23
JPH04295402A (ja) * 1991-03-25 1992-10-20 Lion Corp 除草剤組成物
KR20150025564A (ko) * 2013-08-29 2015-03-11 이동하 해충 방제용 서방형 루어의 제조방법
WO2016031775A1 (fr) * 2014-08-25 2016-03-03 国立大学法人神戸大学 Agent améliorant la tolérance des plantes
JP2022024524A (ja) * 2020-07-28 2022-02-09 株式会社エーアンドエーマテリアル 抗菌消毒性担持体及びその製造法
WO2023074526A1 (fr) * 2021-10-26 2023-05-04 Ａｇｃ株式会社 Agent induisant une tolérance à la chaleur pour plantes et procédé pour induire une tolérance à la chaleur de plantes

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