蔷薇科12种植物导管类型的解剖学观察

The anatomy observation of the vessel type of the twelve kinds of plants in rosaceae

该文初步研究了蔷薇科(Rosaceae)9属12种代表植物的导管类型、数量及导管分子的长度、口径,纤维分子的长度、口径。结果表明:较进化的树种,一般都是孔纹和网纹导管,较原始的树种,一般都是环纹和螺纹导管;导管分子长的则导管口径小,导管分子短的则口径大;纤维分子长度普遍大于导管分子长度,而纤维分子的口径也普遍小于导管分子的口径。

The paper researched on the type and number of the vessel cell,the length and aperture of the vessel and fiber cell.The results as follow： on the whole, the more evolutional species are all pitted vessel and reticulate vessel：The more original species are all ringed vessel and spiral vessel：The vessel molecule is longer then the aperture smaller, the vessel molecule is shorter then the diameter bigger, the length of the fiber cell is longer than the vessel cell＇s, the aperture of the fiber cell is shorter than the vessel cell＇s.