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一、发病症状流胶病主要发生在果树的主干和枝条上,基部重于枝条。果实因虫害或创伤也可感染引起流胶。树干发病时有“水泡状”病斑突起,渗出琥珀色胶液,经阳光照射逐渐变为茶褐色。遇水变软扩散,与新流出的胶液堆积黏附树干。染病后的果树结构发生变化,形成层停止产生新的韧皮部或木质部,却向水平方向增生厚壁细胞,形成由淀粉堆积成的内含物,并在细菌的作用下产生酶,酶把细胞膜溶化后形成树脂。由于厚壁细胞不断增殖,细胞膜和淀粉的胶化不断进行,致使流胶持续进行。
First, the incidence of symptoms Silicosis occurs mainly in the trunk and branches of fruit trees, the base heavier than the branches. Fruit pests or trauma can also cause infection caused by plastic flow. When the trunk disease “blister-like ” lesions protruding ooze amber glue, the sun gradually turns brown. When water softens, it will stick to the tree trunk with new outflow of glue. After the disease, the structure of the fruit tree changes. The cambium stops producing new phloem or xylem. However, it multiplies the thick-walled cells in the horizontal direction and forms the contents accumulated by the starch. An enzyme is formed by the action of bacteria and the enzyme melts the cell membrane After the formation of resin. As thick-walled cells continue to proliferate, the plasticization of the cell membrane and starch continues to occur, resulting in a continuous flow of gel.