Symptoms of bacterial disease?

summary

Bacterial diseases are caused by bacterial infection, such as soft rot, canker, bacterial wilt and so on. The bacteria that invade plants are rod-shaped bacteria, most of which have one or more flagella. They can invade through natural orifices (stomata, skin pores, water pores, etc.) and wounds, and spread by water, rain, insects, etc. They winter in diseased bodies, seeds and soil. They are prone to disease under high temperature and humidity. Symptoms of bacterial disease? Let's talk about it.

Symptoms of bacterial disease?

Spot type: a considerable number of plant diseases caused by Pseudomonas infection are spot like. Such as rice bacterial brown spot, cucumber bacterial angular leaf spot, cotton bacterial angular leaf spot and so on.

2. Leaf blight type: most of them are caused by the infection of Xanthomonas, and the infected plants eventually lead to leaf wilt. Such as rice bacterial leaf blight, cucumber bacterial leaf blight, konjac bacterial leaf blight and so on.

3. Bacterial wilt type: Pseudomonas usually infects plant vascular bundles, blocking the transport pathway, causing plant stem and leaf wilt. Such as tomato bacterial wilt, potato bacterial wilt, strawberry bacterial wilt and so on.

matters needing attention

The results showed that: 1. In the spot type and leaf blight type of bacterial diseases, the local necrotic water stain like translucent lesions appeared first. When the disease was wet, a large number of bacteria spilled from the stomata, water pores, skin pores and wounds of the leaves. 2. The basis for the diagnosis of bacterial diseases of green and leaf blight types: cut the diseased stem with a knife, observe whether the vascular bundle of the stem section has changed, and squeeze it by hand, that is, the Milky viscous liquid, bacterial pus, flows out from the catheter. The use of bacterial pus can be distinguished from Fusarium wilt caused by fungi. This method can be used to distinguish eggplant bacterial wilt and Fusarium wilt.