不同品种吊兰根初生木质部原型的观察与比较

以3个品种吊兰(金边吊兰、银心吊兰、银边吊兰)为材料,采用徒手切片的方法研究了吊兰根初生木质部原型与品种、生境及根直径的t关系。结果表明,不同品种的吊兰根初生木质部原型存在着差异;在水培条件下,吊兰根初生木质部原型与土培条件下的不同,水培条件下的根初生木质部束远少于土培条件;在水培条件下,吊兰根初生木质部原型与根的直径存在正相关关系,但是在土培条件下银心吊兰和银边吊兰根初生木质部原型则和根的直径没有关系。

Observation and Comparison of Root Primary Xylem Archy in Different Chlorophytum Varieties

Three Chlorophytum comosum varieties were used to investigate the relationship between the root primary xylem archy and C.comosum varieties,diameter of the roots and living conditions by using sections cut free-hand and stained with Safranin.The root primary xylem archy in the roots of different varieties were different.The root primary xylem archy in the roots of C.comosum in soil culture were also different from those under hydroponic condition,and the number of xylem bundles in the roots of C.comosum under hydroponic conditions was much less than that in soil culture.Under hydroponic conditions,there was a positive correlation between the number of xylem bundles in the roots of C.comosum and the diameter of the roots,however,the root xylem archy in C.comosum‘Yinxin’and‘Yinbian’has no correlation with the roots diameter of C.comosum.