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Title:: Comparative Study About the Epidermal Structure for Leaves of Carum carvi L.in Different Elevation

Author(s):: WEI Meiqin1; SHEN Ningdong1; WEI Jing2; (1.Agriculture and Animal Husbandry College，Qinghai University，Xining，Qinghai 810016；2.School of Law，North China University of Water Resources and Electric Power，Zhengzhou，Henan 450046)

Keywords:: Carum carvi L.; different altitudes; leaf epidermis; stoma; compare

Abstract:: Taking the leaves of Carum carvi on different altitudes as test material,the sections of upper and lower epidermis of Carum carvi leaves were made by modified epidermal maceration of H2O2-HAc，and safranine dyed，neutral gum mounted，then the epidermal structures were observed and compared using OPTEC-BK5000 optical microscope.The relation of the structure of leaf epidermis and environmental factor was preliminary explored.The results showed that，the cells of upper leaf epidermis were polygons，its anticlinal walls were straight，arch shape，and the cells of lower leaf epidermis were irregular，its anticlinal walls were sinuous.Stomatal type was anisocytic cell type more，minority was lateral direction type，and the stoma scattered across upper and lower epidermal cells.No significant difference was observed about the shape of upper and lower epidermal cells with the rising of the elevation.There were 2 types of stomatal shape:long oval and oval.In general，the protruding degree of the stomatal appara-tus，stomatal density tends to increase with the rising of the elevation，and it had a slight reducing on 3 027-3 238 m，but there was no significant difference between them.The characteristic of upper and lower epidermis of Carum carvi leaves reflected plant adaptations for environment.