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以不同海拔高度的藏茴香叶片为试材,采用石蜡切片法,对其解剖特征进行比较研究。结果表明:藏茴香叶片由表皮、叶肉、叶脉构成,为背腹型叶,随着海拔的增高,叶片的厚度逐渐增加,叶脉逐渐发达;上表皮的长度和厚度随海拔的升高而逐渐增加,而下表皮细胞的长度和厚度无显著性差异,但气孔逐渐外凸;叶肉中栅栏组织的层数随着海拔的上升不断增加;栅栏组织、海绵组织的厚度及其细胞间隙逐渐增大;随海拔的不断升高,海绵组织在叶肉中的比重不断增大。这些特征表明了藏茴香叶片有旱生植物及湿生植物的部分结构特征,体现了植物对环境的适应性。
Taking the fennel leaves at different altitudes as the test material, the paraffin section method was used to compare the anatomic features. The results showed that the leaves of fennel were composed of epidermis, mesophyll and veins and were dorsal-ventral leaves. With the elevation increasing, the thickness of leaves increased gradually and the veins developed gradually. The length and thickness of epidermis increased with altitude , While the length and thickness of the lower epidermal cells had no significant difference, but stomata gradually outward; the number of palisade tissue in mesophyll increased with the elevation increasing; the thickness of palisade tissue and spongy tissue and its intercellular space increased gradually; As the altitude increases, the proportion of sponge tissue in the mesophyll increases. These characteristics indicate some structural features of the xanthophyll and wetland plants in the fennel leaves, reflecting the plant’s environmental adaptability.