Method of domestication and breeding of armyworm Trichogramma suitable for control of soybean borer and control application

Abstract

The invention discloses a Trichogramma domestication breeding method suitable for the prevention and control of soybean borer and its control application. The pine caterpillar Trichogramma and the armyworm Trichogramma co-parasitize the tussah silkworm eggs, and the Trichogramma armyworm controls the tussah silkworm eggs. Trichogramma pine caterpillar can bite through tussah silkworm egg shells to form beehive holes, so that more Trichogramma armyworm individuals can emerge and continue to produce offspring on tussah silkworm eggs. Trichogramma armyworm can Maintaining a relatively stable population enables multi-generation continuous domestication, and gradually optimizes the Trichogramma strains with higher adaptability to tussah eggs, thereby realizing the independent and continuous breeding of Trichogramma on tussah eggs , which laid a technical foundation for the large-scale breeding of the armyworm Trichogramma with tussah eggs. The armyworm Trichogramma bred by the method of the invention has higher parasitic efficiency on the eggs of the soybean borer, and is especially suitable for the biological control of the soybean borer.

Description

technical field [0001] The invention relates to breeding of Trichogramma and its control application, in particular to a domestication and breeding method of the armyworm Trichogramma suitable for the prevention and control of the soybean borer, and the control application of the armyworm Trichogramma to the soybean borer. Background technique [0002] Tussah silkworm (Antheraea pernyi) is a large Lepidoptera insect, and tussah silkworm eggs can be used to breed Trichogramma. Compared with other commonly used intermediate host eggs such as the rice moth (Corcyra cephalonica) eggs, tussah eggs are larger in size, and a single tussah egg can host more than a hundred Trichogrammas, while a rice moth egg usually only hosts one Trichogramma Therefore, tussah eggs are especially suitable for large-scale breeding of Trichogramma, which can greatly improve production efficiency and reduce production costs. [0003] But at present, only Trichogramma dendrolimi and a small number of ...

AI Technical Summary

Problems solved by technology

This screening method discarded most Trichogramma Trichogramma individuals, which greatly reduced the diversity of screening objects; and because there were very few Trichogramma Trichogramma individuals that successfully produced bees, the population was interrupted in the process of generation-by-generation breeding and screening. High risk, difficult to obtain Trichogramma populations that can reproduce continuously on tussah eggs

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