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Frankliniella occidentalis attractant composition

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: 2019-05-10
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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  • Frankliniella occidentalis attractant composition
  • Frankliniella occidentalis attractant composition
  • Frankliniella occidentalis attractant composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation of embodiment 1 (R)-lavender acetate

Embodiment 3

[0018] The aggregation pheromone component (R)-lavender acetate, marmosetyl (S)-methylbutyrate and plant volatile component trans-2-hexenal used in Example 3 were tested Laboratory synthesis, α-pinene was purchased from Beijing Coupling Technology Co., Ltd., and benzaldehyde was purchased from Hefei Tianjian Chemical Co., Ltd. The compounds of the present invention can be synthesized by the following routes.

[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 wi...

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, using 4-lutidine as a catalyst, and 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 aggregated impurities, dry with anhydrous magnesium sulfate for 1 h, filter with a vacuum pump, and then remove the filtrate by rotary evaporation under reduced pressure. dichloromethane, column separation to obtain yellow oil 2.64g (12.97mmol), y...

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Abstract

The invention discloses a frankliniella occidentalis attractant composition and belongs to the technical field of insect aggregation pheromone preparation. The composition comprises frankliniella occidentalis aggregation pheromone and a synergist according to a weight ratio of 1:(0.5-10), main ingredients of the frankliniella occidentalis aggregation pheromone and (R)-lavender acetate and acenaphthene base (S)-2-methyl butyrate of 1:8 in proportion, and the synergist is selected from plant volatile aggregate: one or more of alpha-pinene, benzaldehyde and trans-2-hexenal. The composition can beaccurately applied to frankliniella occidentalis pest observation and prediction, pest quarantine and mass trapping and is of important significance in comprehensive control of frankliniella occidentalis.

Description

technical field [0001] The invention relates to the technical field of insect aggregation pheromone preparation, in particular to a lure 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 (INSV) and tobacco str...

Claims

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Application Information

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Patent Type & Authority Applications(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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