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A kind of attractant composition of western flower thrips

A technology of Western flower thrips and a composition, which is applied in the field of attractant compositions for Western flower thrips, can solve problems such as less than ideal control effect, insect resistance, unstable control effect, etc., and achieves suitable popularization and promotion, The effect of strong autonomy and flexible use

Active Publication Date: 2022-04-01
黑龙江省植检植保站 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term use of chemical agents may cause pests to develop resistance, kill natural enemies, pollute the environment and destroy the ecosystem, and the control effect is unstable; according to the phototaxis of western flower thrips, use sticky boards of different colors for trapping, which is affected by natural conditions Large and will trap non-target insects such as beneficial insects; currently, fungi, bacteria, pathogenic nematodes or predatory natural enemies are used for biological control, but the control effect is not ideal

Method used

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  • A kind of attractant composition of western flower thrips
  • A kind of attractant composition of western flower thrips
  • A kind of attractant composition of western flower thrips

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The preparation of embodiment 1 (R)-lavender acetate

[0019] Dissolve 2.00g (12.97mmol) of 5-methyl-2-(1-methylvinyl)-4-hexen-1-ol in 27mL of anhydrous dichloromethane, add 1.97g (19.46mmol) of triethyl Use an amine as an acid-binding agent. Under ice-salt bath conditions, keep the temperature at about 0°C, slowly add 1.22g (15.56mmol) of acetyl chloride in dichloromethane solution dropwise, and react for 30 minutes, then slowly rise to room temperature to continue the reaction. TLC monitored that the starting material no longer decreased. Quench the reaction with deionized water, keep the organic phase in layers, wash with saturated brine (10mL×3) to remove water-soluble impurities, dry over anhydrous magnesium sulfate for 1 h, filter with vacuum pump, and then remove the filtrate by rotary evaporation under reduced pressure. dichloromethane, column separation to obtain yellow oil 2.13g (12.97mmol), yield 83.5%.

Embodiment 2

[0020] Example 2 Preparation of Marmosetyl (S)-Methyl Butyrate

[0021] Dissolve 2.00g (12.97mmol) (Z)-3,7-dimethyl-2,6-octadiene-1-ol in 27mL of anhydrous dichloromethane, add 3.94g (38.91mmol) triethyl Amines were used as acid-binding agents, and 4-lutidine was used as a catalyst. Under ice-salt bath conditions, the temperature was maintained at about 0°C, and 3.62g (19.46mmol) (S)-(+)-2- The dichloromethane solution of methyl butyric anhydride, after reacting for 30min, was slowly raised to room temperature to continue the reaction, and was monitored by TLC until the raw material no longer decreased. Quench the reaction with deionized water, keep the organic phase in layers, wash with saturated brine (10mL×3) to remove water-soluble impurities, dry over anhydrous magnesium sulfate for 1 h, filter with vacuum pump, and then remove the filtrate by rotary evaporation under reduced pressure. dichloromethane, column separation to obtain yellow oil 2.64g (12.97mmol), yield 85.44...

Embodiment 3

[0022] Example 3 Y-type olfactory measurement of single-component synergist

[0023] Preparation of a single dose of plant-derived volatiles: each compound was prepared in three concentrations of 0.1, 1, and 10 μg / μl using n-hexane as a solvent, and n-hexane was used as a control.

[0024] The sensitivity of Thrips occidentalis to various reagents was determined by "Y" type olfactometer. In a room with clean air at 25°C, a relative humidity of about 70%, and a 1cm*10cm "Y" type olfactometer for biological determination. Take 1 μl of the single-component compound of the synergist and drop it on a filter paper strip, place it in one side arm of a Y-shaped olfactometer, and put an equal amount of n-hexane in the other side arm as a control. After each group was repeated, the positions of the test group and the control group were reversed to avoid experimental errors. After each test, a new filter paper strip was replaced, each reagent was repeated 3 times, and a clean "Y-shaped...

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Abstract

The invention discloses a Western flower thrips attractant composition belonging to the technical field of insect aggregation pheromone preparation. The western flower thrips attractant composition includes western flower thrips aggregation pheromone and a synergist, and the weight ratio of the western flower thrips aggregation pheromone to the synergist is 1: (0.5-10), wherein the The main components of Western flower thrips aggregation pheromone are (R)-lavender acetate and acenaphthyl (S)-2-methyl butyrate, and the ratio is 1: 8, and the synergist is selected from plant volatilization Aggregate substance: one or more of α-pinene, benzaldehyde, and trans-2-hexenal. The western flower thrips attractant composition provided by the invention can be accurately applied to the detection of western flower thrips infestation, pest quarantine and mass trapping, and is of great significance for comprehensive management of western flower thrips.

Description

technical field [0001] The invention belongs to the technical field of insect aggregation pheromone preparation, and in particular relates to an attractant composition of thrips occidentalis. Background technique [0002] Western flower thrips (Frankliniella occidentalis), which belongs to Thysanoptera (Thysanoptera) Thripidae (Thripidae) flower thrips genus (Frankliniella), is one of the most serious worldwide pests to crops in the world today. Western flower thrips is a polyphagous pest. There are more than 500 kinds of plants in about 66 families, including many important economic crops, such as strawberries, tomatoes, apples, grapes, green peppers, melons, cucumbers, chrysanthemums, roses, impatiens, etc. Flowers, petunia, datongyan, dahlia and so on. The pest reproduces quickly and has a wide range of hosts, causing rust-brown spots on leaves and fruits, loss of fruit commerciality, and may also spread tomato spotted wilt virus (TSWV), impatiens necrotic spot virus (IN...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/02A01N27/00A01N35/04A01N35/02A01P19/00C07C67/14C07C69/145C07C67/08C07C69/24A01M1/02
Inventor 宫香余李鹏张瑞萍
Owner 黑龙江省植检植保站
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