对莱阳茌梨茎干环剥后新皮再生过程进行了详细的组织学观察。结果表明,梨树茎干大面积环剥后在适当的条件下也能再生出新皮。环剥后不久就可由未成熟木质部分子和射线细胞中发生出愈伤组织。这些愈伤组织一般在靠近表面处发生木栓形成层,而在愈伤组织里面靠近原来的次生木质部处分化出新的维管形成层。新发生的维管形成层正常地向外分化出韧皮部,向内分化出木质部。经过1个月的时间,就可建立起完整的新皮。 A detailed histological observation was conducted on the regeneration process of the new skin after the stem and the spire of Laiyang Pear. The results showed that after a large area of ​​pears stems were stripped, new shoots could be regenerated under appropriate conditions. Shortly after girdling, callus can occur from immature xylem and ray cells. These calluses typically develop a cambial layer near the surface and differentiate new vascular cambium within the calluses adjacent to the original secondary xylem. The newly occurring vascular cambium normally divides phloem outward, differentiating xylem inward. After a month’s time, you can establish a complete new skin.