侵填体

植物 木质部导管或 管胞附近的薄壁细胞，由导管或管胞腔内伸出而形成的瘤状突起.这种突起能长大并可贮藏鞣质、树脂等，最后充塞于整个腔中，使导管或管胞逐渐丧失其输导功能，木质部变得更坚硬.侵填体储有细胞后含物，有的还能产生 次生壁，甚至分化成 石细胞，增加支持功能.大量产生侵填体的木材有洋槐、葡萄、桑、梓树和 黑胡桃等.侵填体的形成可使木材坚硬而耐腐蚀，特别在心材形成时，边材如受到机械损伤或感染病菌，侵填体会堵塞导管，起到一定的防腐抗感染作用.Xylem tracheid near the ducts or parenchyma cells from the ducts or tracheid cavity formed out of the tumor-like protuberances. Such processes can be growing up and can be stored tannin, resin, etc. Finally, peppered throughout the cavity, make ducts or tracheid gradually lose its transporting function, xylem become stronger. invaded reservoir body has cells filled with objects, and some also produce secondary wall, and even differentiate into stone cell, increasing support. invasion of a large number of generated filled body of timber with acacia, grape, mulberry, catalpa and black walnut and so on. invade the formation of the body can fill a hard and corrosion-resistant timber, in particular, the formation of heart wood, the sapwood, such as mechanical damage or infection by the bacteria invade fill Experience blocked catheters, play a certain role in anti-corrosion anti-infection.