Method for large-scale breeding non-toxic myzus persicae

Abstract

The invention discloses a method large-scale breeding non-toxic myzus persicae. A tobacco material resistant to TMV (Tobacco Mosaic Virus) and PVY (Potato Virus Y) is used as a breeding host of aphids. After seedling growing or potting or transplanting, the aphids are artificially bred in a net house or a greenhouse, and a double-resistant strain with a high aphid breeding efficiency is selected to be used for breeding non-toxic aphids. The method adopts the tobacco material resistant to the TMV and the PVY to breed the aphids and can effectively reduce the potential risk of the aphids carrying virus diseases under the condition that the current aphid parasitoid breeding process and the cost are not increased. The method has the characteristics of simplicity, convenience and easiness in operation, economy, reliability and the like and can promote popularization and application of aphid parasitoid control crop aphids.

Description

Technical field: [0001] The invention belongs to the biological control of aphids in the field of plant protection, in particular to a method for large-scale propagation of non-toxic aphids. Background technique: [0002] Aphidius gifuensis is an endoparasitic wasp specialized in parasitizing aphids, and is an important parasitic natural enemy of tobacco field Aphidius gifuensis. Aphids aphids is widely used in biological control of aphids. The main steps of preventing and controlling aphids by the aphids include: planting plants, raising aphids on the plants, using the aphids raised on the plants, and raising the aphids. The purpose of preventing and controlling aphids is achieved by artificially releasing and rearing the aphids in the field to parasitize the aphids on the crops in the field. Aphididae rearing consists of two main phases: 1) seed aphids and overwintering of seedling bees; 2) commercial Aphididae production and release phases. In small sheds or large shed...

AI Technical Summary

Problems solved by technology

However, there are problems such as high cost, cumbersome steps, difficult implementation, and difficulty in achieving high efficiency.

The main problems are reflected in the following aspects: 1) The individuals of Aphididae and aphids are small but the populations are huge, so it is difficult to sort them. The separation method of Aphididae adult bees and winged aphids can still be completely separated

2) As a result of long-term evolution, the parasitism rate of nymphs cannot reach 100% in large-scale breeding sheds

3) The prevention and control of common plant virus diseases is difficult

In frequent operations and repeated use of net rooms or greenhouses, TMV and PVY and other serious plant viruses have the characteristics of multiple sources of initial infection, easy transmission, fast transmission speed, latent infection, and poor control effect of chemicals.

Once a shed is poisonous, it will be costly and difficult to completely eliminate