论文部分内容阅读
试验说明杨梅癌肿病病原细菌也可从叶痕或皮孔侵入茎,在薄壁细胞内大量繁殖并继续向茎皮层侵染,皮层薄壁细胞受到细菌分泌物的刺激,细胞分裂,使皮层细胞数目增多,向外突出形成肿瘤,肿瘤内有大量薄壁细胞及排列不规则的输导组织;后者与茎内的维管组织相连,结果使寄主体内的部分物质物质运往病部,消耗于肿瘤的生长,枝梢得不到充足的水分和养料,可能是造成肿瘤以上枝梢枯死的原因之一。
Test results show that Yang Mei cancer pathogenic bacteria can also invade stems from the leaf marks or lenticels, large-scale parenchyma cells and continue to the stem cortex infection, cortical parenchyma cells stimulated by bacterial secretions, cell division, the cortex The number of cells increased, protruding out to form a tumor, the tumor has a large number of parenchyma cells and irregularly arranged guide tissue; the latter is connected with the vascular tissue within the stem, the result of the host part of the material substances transported to the disease, consumption Growth of the tumor, branches do not get enough water and nutrients, may be caused by one of the causes of death above the tumor branches.