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High-efficiency attractant for mythimna lorgi and application of high-efficiency attractant

A technology of Lloyd's armyworm and attractant, applied in the direction of attracting pests, application, biocide, etc., can solve the problems of poor selectivity, pollution, etc., and achieve the effects of long-lasting effect, convenient use and simple operation

Inactive Publication Date: 2020-07-17
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical pesticides have brought huge pollution to human beings and the environment. Excessive use can easily make armyworm Lloyd's resistance. The method of trapping and killing with light is less selective, which has a certain impact on natural enemies and other beneficial insects, and due to weather, geographical environment and other reasons, the use has certain limitations

Method used

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  • High-efficiency attractant for mythimna lorgi and application of high-efficiency attractant
  • High-efficiency attractant for mythimna lorgi and application of high-efficiency attractant
  • High-efficiency attractant for mythimna lorgi and application of high-efficiency attractant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The synthesis of embodiment 1 cis-9-tetradecene acetate

[0018] Take a 100mL single-necked round bottom flask, add cis-9-tetradecen-1-ol (1.0g, 4.71mmol), triethylamine (0.57g, 5.65mmol), 4-dimethylaminopyridine (0.02g, 1%~5%wt), dichloromethane (25mL), stirred in an ice-salt bath, and then added dropwise acetic anhydride (0.58g, 5.65mmol). After dropping, react for 30 minutes, withdraw from the ice-salt bath, naturally warm up to room temperature, and stir overnight. TLC monitors that the raw material no longer decreases, the reaction is quenched with deionized water, washed with saturated brine (25mL×3), dried over anhydrous magnesium sulfate, concentrated under reduced pressure, column chromatography [eluent: V (ethyl acetate): V (Petroleum ether) = 1:30] to obtain 1.03 g of a colorless oily liquid, namely cis-9-tetradecene acetate, with a yield of 86%.

[0019] cis-9-tetradecen-1-ol acetate physical properties, yield, 1 H NMR, 13 C NMR and HR-MS data are as fol...

Embodiment 2

[0021] Synthesis of cis-7-dodecene acetate of embodiment 2

[0022] Synthetic method is the same as embodiment 1.

[0023] cis-7-dodecen-1-ol acetate physical properties, yield, 1 H NMR, 13 C NMR and HR-MS data are as follows:

[0024] (Z)-7-Dodecenyl alcohol, colorless oily liquid, yield 93%; 1 H NMR (300MHz, CDCl 3 )δ:5.38-5.30(m,2H),4.05(t,J=4.3Hz,2H),2.02-2.04(m,7H),1.69-1.57(m,2H),1.34-1.26(m,10H) ,0.93-0.89(m,3H); 13 C NMR (75MHz, CDCl 3 )δ: 170.1, 130.6 (2C), 64.9, 32.1, 29.7-25.9 (6C), 22.4, 20.6, 14.1; HR-MS (ESI) m / z: Calcd for C 14 h 27 o 2 {[M+H] +} 226.1913, found 226.1902.

Embodiment 3

[0025] Embodiment 3 field bioactivity assay test

[0026] Lure preparation:

[0027] The test lure selects the green anti-mouth rubber head (14mm high, 8mm inner diameter of the opening end, 1mm wall thickness of the opening end, and 5mm opening depth), and the green anti-mouth rubber head is soaked in 95% ethanol before adding the attractant. Weigh a certain amount of the two components of the attractant according to the ratio, then mix them evenly, add chromatographically pure n-hexane solution, and prepare a 10 μg / μL mother solution. Use a pipette gun to draw 100 μL of the solution and add it to the green anti-mouth rubber tip. After the solution completely penetrates into the rubber, add 100 μL of n-hexane. After the n-hexane is completely volatilized, a lure containing 1000 μg of attractant is obtained. Before the test, the lures were placed in a -20°C refrigerator and stored for later use. Five replicates were set up for each of the above lure treatments. As a control,...

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Abstract

The invention discloses a high-efficiency attractant for mythimna lorgi and an application of the high-efficiency attractant. The high-efficiency attractant for the mythimna lorgi is prepared from thefollowing components in percentage by mass: 50 to 90 percent of cis-9-tetradecenyl acetate and 10 to 50 percent of cis-7-dodecenyl acetate. The high-efficiency attractant can trap and kill male mythimna lorgi more effectively, reduces the interspecific reproduction rate, is small in dosage and environmentally friendly, can be accurately applied to insect condition forecasting, mass trapping and mating interference, and has important significance in comprehensive treatment on the mythimna lorgi.

Description

technical field [0001] The invention belongs to the technical field of biological control, and in particular relates to a high-efficiency attractant for preventing and controlling Armyworm rou'ii and its application. Background technique [0002] Leucania loreyi Duponchel belongs to Leucania loreyi, Noctuidae, and is an important economic crop pest. It is widely distributed in the world, mainly in Africa, Australia, Asia and the Middle East. In my country, it is mainly distributed in Henan, Guangdong, Yunnan, Fujian, Sichuan, Gansu, Zhejiang and Taiwan, and is one of the main pests in corn production in my country. In the early stage of corn growth, larvae mainly feed on corn leaves, causing nicks. In severe cases, only the main veins are left on the damaged leaves; After maize spins and tassels, it mainly feeds on leaves, ear filaments and young seeds, resulting in sterility of some grains. At the same time, larvae excrete feces into it, polluting ear, seriously affecting...

Claims

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Application Information

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IPC IPC(8): A01N37/06A01P19/00A01M1/02
CPCA01M1/02A01N37/06
Inventor 黄文坤梅向东彭德良宁君王留洋
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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