CN114766488B - Application of precocin in preventing and controlling spodoptera frugiperda - Google Patents

Application of precocin in preventing and controlling spodoptera frugiperda Download PDF

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CN114766488B
CN114766488B CN202210694121.5A CN202210694121A CN114766488B CN 114766488 B CN114766488 B CN 114766488B CN 202210694121 A CN202210694121 A CN 202210694121A CN 114766488 B CN114766488 B CN 114766488B
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precocin
spodoptera frugiperda
repellent
antifeedant
application
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CN114766488A (en
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黄欣蒸
李桦丽
赵胜园
张永军
石旺鹏
国新玥
栗爱丽
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China Agricultural University
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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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
    • A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/146—Genetically Modified [GMO] plants, e.g. transgenic plants

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

Abstract

The invention discloses an application of precocin in preventing and controlling moths, wherein the precocin comprises precocin I and precocin II, has the effects of poisoning, refusing to eat/repellent, delaying molting and the like on various moths, has obvious repellent effect on spodoptera frugiperda, has positive effect on comprehensive prevention and control of moths, and has the advantages of simple and easy preparation method, simple process and lower cost; the application method is simple and convenient, does not need a special device, has good effect and is environment-friendly.

Description

Application of precocin in preventing and controlling spodoptera frugiperda
Technical Field
The invention relates to the technical field of biological control, in particular to application of precocin in controlling moths, and especially relates to application of precocin in controlling spodoptera frugiperda.
Background
Spodoptera frugiperda belongs to spodoptera of Lepidoptera, is derived from tropical and subtropical areas of America, and has the outstanding characteristics of wide host range, strong reproductive capacity, rapid migration and diffusion, serious pest, high prevention and control difficulty and the like. After the invasion of 2018 and 12 months into China, the colonization process is completed, and the occurrence characteristic of 'North Qian nan Hui and annual circulation' is formed, so that the colonization process becomes a major disaster-causing organism for grain production in China.
In recent years, research on the behavior control of functional plants on insects and development of insect behavior control agents have become important directions in the field of green prevention and control research of agricultural pests, and green prevention and control by using active components to repel the pests will be receiving more and more attention.
Patent document CN113424840a discloses a spodoptera frugiperda repellent containing a cortex Periplocae Radicis extract, wherein plant volatile matters in the cortex Periplocae Radicis extract contain highly specific organic chemical substances, and have positive effects on comprehensive prevention and control of field pests.
Patent document CN112704085a discloses spodoptera frugiperda repellent based on evodia rutaecarpa extract, wherein the preparation is derived from extracts of fruits and leaves of medicinal plant evodia rutaecarpa, and the main components are beta-myrcene, D-limonene, beta-phellandrene and beta-ocimene, and the repellent has long-term repellent effect on corn spodoptera frugiperda.
At present, no report on the use of precocity to repel and poison insects (spodoptera frugiperda) is known in the prior art, and the invention is specially proposed in view of the report.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides application of precocin in preventing and controlling moth, a moth repellent/antifeedant, a preparation method and application thereof.
The first aspect of the invention provides an application of precocin in controlling moths, which belong to lepidoptera.
Further, the moth belongs to the noctuid family.
Further, the moth belongs to the genus spodoptera.
Further, the moth may be a moth larva.
Further, the moth may be one of spodoptera frugiperda, indian moth, pink moth, rice moth and wheat moth.
In one embodiment of the invention, the moth is spodoptera frugiperda.
In one embodiment of the invention, the moth is spodoptera frugiperda larva.
Further, the precocin is used as a repellent and/or a antifeedant.
Further, the precocin comprises precocin I and/or precocin II.
In one embodiment of the invention, the precocin is precocin i.
In one embodiment of the invention, the precocin is precocin ii.
In one embodiment of the invention, the precocins are precocin i and precocin ii.
Further, when the precocin comprises precocin I and precocin II, the ratio of the weight parts of precocin I to precocin II is 2-40:0.5-3, preferably the ratio of the weight parts of precocin I to precocin II is 2-40:0.5-1.5, more preferably the ratio of the weight parts of precocin I to precocin II is 2-40:1 (e.g. 2-35:1, 2-30:1, 2-25:1, 3-25:1, 4-25:1, 5-25:1, 8-9:1), still more preferably the ratio of the weight parts of precocin I to precocin II is 5-20:1.
In one embodiment of the present invention, when the precocin comprises precocin i and precocin ii, the ratio of the precocin i to the precocin ii is 8.8:1 in parts by weight.
In a second aspect the invention provides a method of controlling moth insects, said method comprising applying to a plant a precocin comprising precocin i and/or precocin ii.
In one embodiment of the invention, the precocin is precocin i.
In one embodiment of the invention, the precocin is precocin ii.
In one embodiment of the invention, the precocins are precocin i and precocin ii.
Further, the plant is a crop.
Further, when the precocin comprises precocin I and precocin II, the ratio of the weight parts of precocin I to precocin II is 2-40:0.5-3, preferably the ratio of the weight parts of precocin I to precocin II is 2-40:0.5-1.5, more preferably the ratio of the weight parts of precocin I to precocin II is 2-40:1 (e.g. 2-35:1, 2-30:1, 2-25:1, 3-25:1, 4-25:1, 5-25:1, 8-9:1), still more preferably the ratio of the weight parts of precocin I to precocin II is 5-20:1.
In one embodiment of the present invention, when the precocin comprises precocin i and precocin ii, the ratio of the precocin i to the precocin ii is 8.8:1 in parts by weight.
Further, the administration concentration of the precocin is 1-15mg/mL (e.g., 1mg/mL, 1.5 mg/mL, 2mg/mL, 2.5mg/mL, 3mg/mL, 3.5 mg/mL, 4mg/mL, 4.5 mg/mL, 5mg/mL, 5.5 mg/mL, 6mg/mL, 6.5 mg/mL, 7mg/mL, 7.5 mg/mL, 8mg/mL, 8.5 mg/mL, 9mg/mL, 9.5 mg/mL, 10mg/mL, 10.5 mg/mL, 11mg/mL, 11.5 mg/mL, 12mg/mL, 12.5 mg/mL, 13mg/mL, 13.5 mg/mL, 14mg/mL, 14.5 mg/mL, 15 mg/mL), preferably, the administration concentration is 1-10mg/mL.
In one embodiment of the invention, when the precocin is precocin I, the administration concentration is 1-10mg/mL, preferably 10mg/mL.
In one embodiment of the invention, when the precocin is precocin II, the administration concentration is 1-5mg/mL, preferably 1mg/mL.
In one embodiment of the invention, when the precocin is precocin I and precocin II, the administration concentration is 1-5mg/mL, preferably the administration concentration is 5mg/mL.
In a third aspect the present invention provides a moth repellent and/or antifeedant comprising precocin i and/or precocin ii.
Further, when the repellent and/or antifeedant comprises precocin I and precocin II, the ratio of the precocin I to the precocin II is 2-40:0.5-3 by mass, preferably the ratio of the precocin I to the precocin II is 2-40:0.5-1.5 by mass, more preferably the ratio of the precocin I to the precocin II is 2-40:1 by mass (e.g. 2-35:1, 2-30:1, 2-25:1, 3-25:1, 4-25:1, 5-25:1, 8-9:1 by mass), and even more preferably the ratio of the precocin I to the precocin II is 5-20:1 by mass.
In one embodiment of the invention, the repellent and/or antifeedant comprises precocin i.
In one embodiment of the invention, the repellent and/or antifeedant comprises precocin ii.
In one embodiment of the invention, the repellent and/or antifeedant comprises precocin i and precocin ii.
In one embodiment of the present invention, when the repellent and/or antifeedant comprises precocin i and precocin ii, the ratio of precocin i to precocin ii is 8.8:1 in parts by weight.
Further, the repellent and/or antifeedant may further comprise an auxiliary agent selected from the group consisting of: one or more combinations of solvents, emulsifiers, curing agents, co-emulsions, synergists, antioxidants, preservatives, slow release agents, stabilizers, defoamers, surfactants, mildewcides, dispersants, deodorants, and buffers.
In one embodiment of the invention, the adjuvant is a solvent.
Further, the solvent is selected from: one of alcohols, ketones, ethers, hydrocarbons and esters, preferably the solvent is a hydrocarbon solvent.
Further, the alcohol solvent is selected from the group consisting of: the ketone solvent is acetone or methyl ethyl ketone, the ether solvent is diethyl ether or petroleum ether, the hydrocarbon solvent is one of n-hexane, benzene, toluene and xylene, and the ester solvent is ethyl acetate or ethyl formate.
In one embodiment of the invention, the solvent is n-hexane.
Further, the repellent and/or antifeedant may be in a dosage form selected from: solid (such as soft or hard solid wax), oil (such as emulsifiable concentrate), emulsion (aqueous emulsion, microemulsion), water mixture, paste, gel, aerosol, microcapsule, and paste.
Further, the concentration of the precocin in the repellent and/or antifeedant is 1-15mg/mL (e.g., 1mg/mL, 1.5 mg/mL, 2mg/mL, 2.5mg/mL, 3mg/mL, 3.5 mg/mL, 4mg/mL, 4.5 mg/mL, 5mg/mL, 5.5 mg/mL, 6mg/mL, 6.5 mg/mL, 7mg/mL, 7.5 mg/mL, 8mg/mL, 8.5 mg/mL, 9mg/mL, 9.5 mg/mL, 10mg/mL, 10.5 mg/mL, 11mg/mL, 11.5 mg/mL, 12mg/mL, 12.5 mg/mL, 13mg/mL, 13.5 mg/mL, 14mg/mL, 14.5 mg/mL, 15 mg/mL), preferably the concentration of the precocin in the repellent and/or antifeedant is 1-10mg/mL.
In one embodiment of the invention, when the repellent and/or antifeedant comprises precocin I, the precocin is present in a concentration of 1-10mg/mL, preferably the precocin is present in a concentration of 10mg/mL.
In one embodiment of the invention, when the repellent and/or antifeedant comprises precocin II, the precocin is present in a concentration of 1-5mg/mL, preferably the precocin is present in a concentration of 1mg/mL.
In one embodiment of the invention, when the repellent and/or antifeedant comprises precocin I and precocin II, the precocin concentration is 1-5mg/mL, preferably the precocin concentration is 5mg/mL.
Further, the repellent and/or antifeedant may be used by any method of spraying, spreading, coating, volatilizing, or smoking.
According to a fourth aspect of the present invention there is provided a process for the preparation of a repellent and/or antifeedant according to the third aspect, the process comprising the steps of:
(1) Weighing precocin I and precocin II according to the mass ratio of 2-40:0.5-3;
(2) The precocin I and precocin II are mixed with auxiliary agents to prepare the repellent and/or antifeedant with the concentration of 1-20 mg/mL.
Further, the concentration of the precocin in the repellent and/or antifeedant is 1-15mg/mL (e.g., 1mg/mL, 1.5 mg/mL, 2mg/mL, 2.5mg/mL, 3mg/mL, 3.5 mg/mL, 4mg/mL, 4.5 mg/mL, 5mg/mL, 5.5 mg/mL, 6mg/mL, 6.5 mg/mL, 7mg/mL, 7.5 mg/mL, 8mg/mL, 8.5 mg/mL, 9mg/mL, 9.5 mg/mL, 10mg/mL, 10.5 mg/mL, 11mg/mL, 11.5 mg/mL, 12mg/mL, 12.5 mg/mL, 13mg/mL, 13.5 mg/mL, 14mg/mL, 14.5 mg/mL, 15 mg/mL), preferably the concentration of the precocin in the repellent and/or antifeedant is 1-10mg/mL.
The moth repellent and/or antifeedant provided by the invention comprises the precocin I and the precocin II, has the effects of poisoning, antifeeding/repelling, and molting delaying on various moths, and especially has an obvious repellent effect on spodoptera frugiperda, and has a positive effect on comprehensive prevention and control of field moths. The preparation method of the moth repellent and/or the antifeedant is simple and easy, the process is simple, and the cost is low; the application method is simple and convenient, does not need a special device, has good effect and is environment-friendly.
Drawings
FIG. 1 shows the results of a bidirectional behavioral selection assay for Spodoptera frugiperda larvae on 5mg/mL solutions of precocity I.
FIG. 2 shows the results of a two-way behavioral selection assay for Spodoptera frugiperda on a 10mg/mL solution of precocin I.
FIG. 3 shows the results of a bidirectional behavioral selection assay for Spodoptera frugiperda larvae on 1mg/mL solution of precocin II.
FIG. 4 shows the results of a bidirectional behavioral selection assay for Spodoptera frugiperda larvae on a 5mg/mL solution of precocin II.
FIG. 5 is a bidirectional behavioral selection assay of Spodoptera frugiperda larvae on 2.5mg/mL of a compounded precocious solution.
FIG. 6 is a bidirectional behavioral selection assay of Spodoptera frugiperda larvae on 5mg/mL of a compounded precocious puberty solution.
Detailed Description
In order that the technical content of the present invention may be more clearly understood, the following detailed description of the embodiments is given only for better understanding of the content of the present invention and is not intended to limit the scope of the present invention.
Precocin i (99%) was purchased from sigma aldrich (Shanghai) trade limited;
precocin ii was purchased from Shanghai microphone Biochemical technologies Co., ltd;
spodoptera frugiperda is provided by plant protection institute of national academy of agricultural sciences, and is fed with artificial feed indoors at a temperature (26+ -1) deg.C, humidity (60+ -5)%, and photoperiod L// d=16// 8h.
Example 1 bidirectional behavior selection assay of Spodoptera frugiperda larvae on precocin I
Measurement material: artificial feed, 90mm diameter disposable plastic culture dish.
Assay reagents: precocin i (99%), n-hexane.
For measuring insects: the test line spodoptera frugiperda 3-instar larvae.
The specific determination method comprises the following steps: feed blocks with uniform size are placed at two ends of the diameter of the culture dish, a semicircle with the radius of 3cm and taking the feed as the center of a circle is used as a selection area, and the rest is an unselected area. The two feeds were each dropped with 20uL of n-hexane (this is a control group solution) and with n-hexane as solvent of precocin I solution (this is a treatment group solution) at a dose concentration of 5mg/mL and 10mg/mL, respectively. The center of the dish was placed with a test insect (starvation treatment 3h in advance) for selection. Each treatment was repeated 4 times for 20 test insects, for a total of 80. The dishes were placed in an incubator with a temperature of (26.+ -. 1)%, a humidity of (60.+ -. 5)%, and an illumination of 0, and covered with black cloth. The selection is recorded 1, 3 and 5 hours after treatment, wherein FIGS. 1-2 show the results of two-way behavioral selection assays of Spodoptera frugiperda larvae on 5mg/mL and 10mg/mL solutions of precocin I, respectively.
In fig. 1-2, significant at the 0.01 level is indicated, and significant at the 0.001 level is indicated. X-shaped articles 2 Testing.
The results of FIGS. 1-2 show that: the 5mg/mL and 10mg/mL solutions of precocin I had very significant antifeedant effects on 3 rd-instar larvae, with more pronounced effects as treatment time progressed. In addition, the antifeedant effect is that from big to small in turn: 10mg/mL > 5mg/mL.
Example 2 bidirectional behavior selection assay of Spodoptera frugiperda larvae on precocin II
Measurement material: artificial feed, 90mm diameter disposable plastic culture dish.
Assay reagents: precocin II (95%), n-hexane.
For measuring insects: the test line spodoptera frugiperda 3-instar larvae.
The specific determination method comprises the following steps: feed blocks with uniform size are placed at two ends of the diameter of the culture dish, a semicircle with the radius of 3cm and taking the feed as the center of a circle is used as a selection area, and the rest is an unselected area. The two feeds were each dropped with 20uL of n-hexane (this is the control solution) and with n-hexane as the solvent of the precocin II solution (this is the treatment solution) at a dose concentration of 1mg/mL and 5mg/mL, respectively. The center of the dish was placed with a test insect (starvation treatment 3h in advance) for selection. Each treatment was repeated 4 times for 20 test insects, for a total of 80. The dishes were placed in an incubator with a temperature of (26.+ -. 1)%, a humidity of (60.+ -. 5)%, and an illumination of 0, and covered with black cloth. The selection was recorded at 1, 3 and 5 hours after treatment and FIGS. 3-4 show the results of two-way behavioral selection assays of Spodoptera frugiperda larvae on 1mg/mL and 5mg/mL solutions of precocin II, respectively.
In fig. 3-4, the x is shown to be significant at the 0.05 level. X-shaped articles 2 Testing.
The results in fig. 3-4 show that: the 1mg/mL and 5mg/mL of the precocin II solution have obvious antifeedant effect on 3-year-old larvae of grass, and the antifeedant effect is as follows from large to small: 1mg/mL > 5mg/mL.
Example 3 bidirectional behavior selection assay of Spodoptera frugiperda larvae on Compound precocity
Measurement material: artificial feed, 90mm diameter disposable plastic culture dish.
Assay reagents: compounded precocin (mixed according to volume ratio I: II=8.8:1), and n-hexane.
For measuring insects: the test line spodoptera frugiperda 3-instar larvae.
The specific determination method comprises the following steps: feed blocks with uniform size are placed at two ends of the diameter of the culture dish, a semicircle with the radius of 3cm and taking the feed as the center of a circle is used as a selection area, and the rest is an unselected area. The two feeds were each dropped with 20uL of n-hexane (this is the control group solution) and with n-hexane as the solvent in a combined precocity solution (this is the treatment group solution) at a dose concentration of 2.5mg/mL and 5mg/mL, respectively. The center of the dish was placed with a test insect (starvation treatment 3h in advance) for selection. Each treatment was repeated 4 times for 20 test insects, for a total of 80. The dishes were placed in an incubator with a temperature of (26.+ -. 1)%, a humidity of (60.+ -. 5)%, and an illumination of 0, and covered with black cloth. The selection was recorded at 1, 3 and 5 hours after treatment and figures 5-6 show the results of bidirectional behavior selection assays of spodoptera frugiperda larvae on 2.5mg/mL and 5mg/mL of the compounded precocin solution, respectively.
In fig. 5-6, significant at the 0.05 level, significant at the 0.01 level, and significant at the 0.001 level. X-shaped articles 2 Testing.
The results in fig. 5-6 demonstrate that: the 2.5mg/mL and 5mg/mL compound precocin solutions have extremely remarkable antifeedant effect on 3-instar larvae, and the stronger the effect is along with the extension of the treatment time. In addition, the antifeedant effect is that from big to small in turn: 5mg/mL > 2.5mg/mL.
As can be seen from figures 1-6, the main components of the ageratum conyzoides, namely the precocious pubescens elements I and II, and the compound liquid thereof have antifeedant effect on spodoptera frugiperda larvae at a certain concentration, and the antifeedant effect of the precocious pubescens element I is the best. Thus, the precocin can be further studied and applied as a spodoptera frugiperda repellent/antifeedant.

Claims (1)

1. The application of the precocity element in preventing spodoptera frugiperda is characterized in that the precocity element is precocity element I, the application concentration of the precocity element I is 10mg/mL, the spodoptera frugiperda is spodoptera frugiperda larva, the precocity element is used as a antifeedant, the application is that the precocity element I is applied to plants, and the plants are crops.
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