Study On Anatomical Structure Of Ammopiptanthus Mongolicus Leaves In Different Geographical Distribution Areas

This article takes Ammopiptanthus mongolicus as the research object,uses paraffin section technology and image J data measurement software to study the anatomical structure of the leaves of A.holly in 10 different geographical distribution areas,and discusses the adaptation of the anatomical structure of Ammopiptanthus mongolicus leaves in different geographical distribution areas to the environment.feature.The findings are as follows:1、The general characteristics of the anatomical structure of Ammopiptanthus mongolicus leavesThe anatomical structure of Ammopiptanthus mongolicus leaves is isoplanar,with the differentiation of palisade tissue and sponge tissue;the thickness of the stratum corneum can reach 20.9um;the upper epidermal stomatal density of 86.6/mm2 is greater than the lower epidermal stomatal density of 37.4/mm2.The thickness of the upper stratum corneum and the lower stratum corneum,the thickness of the upper epidermis and the thickness of the lower epidermis,the depth of the upper and lower chambers and the depth of the lower chambers,the stomatal density of the upper epidermis and the stomatal density of the lower epidermis,and the depth of the subepithelial chambers are positively correlated with the epidermal thickness There is a negative correlation between epidermal stomatal density and the depth of the subforaminal cavity,sponge tissue thickness,and palisade tissue thickness.Palisade/spongy has the largest coefficient of variation and the smallest coefficient of variation in leaf thickness.Coefficient of variation are less than 50%.2、Influential factors and distribution characteristics of leaf anatomy in different geographical distribution areasThe maximum duct diameter of Ammopiptanthus mongolicus leaves is affected by both temperature and precipitation;the density of the upper and lower epidermis will decrease as the altitude increases,and the depth of the upper and lower holes and the lower chamber will increase as the altitude increases.Palisade tissue has a negative correlation with longitude,and sponge tissue has a positive correlation with longitude.The coefficients of variation of the upper and lower fence organization,the fen(?)e organization,the leaf thickness,and the depth of the upper hole and the lower chamber decrease with increasing rainfall,and the coefficients of variation of the upper and lower fence organization,fence organization,and leaf thickness increase with increasing temperature.The 10 populations were divided into two groups by clustering based on anatomical indicators such as Palisade/spongy.They are ZW,EJN,BY,AY in the western region,and WLJ,AL2,WLT,GLB,YC,and AL1 populations in the eastern region.When clustered by stratum corneum,epidermal thickness,subforaminal cavity depth,and epidermal stomatal density,the EJN,WLT,AL1,and GLB populations showed consistency.The results show that there are significant differences in the anatomical structure of Ammopiptanthus mongolicus leaves in different geographical distribution areas,and this difference is mainly affected by geographical factors.However,the coefficients of variation of the leaf anatomical structure are all less than 50%,which indicates that the leaf anatomical structure among Ammopiptanthus mongolicus populations is affected by genetic factors,which changes it within a certain range.