九种常绿阔叶植物叶片解剖构造的研究  

Study on the Anatomic Structure of Leaves of Nine Evergreen Broad-leaved Plants

作　　者：孙国馨 陈帆 孟霄哲 黄大庄[1] 孟庆瑞[1] SUN Guoxin;CHEN Fan;MENG Xiaozhe;HUANG Dazhuang;MENG Qingrui(College of Landscape,Agricultural University of Hebei,Baoding,Hebei 071066;Baoding City Garden Greening Center,Baoding,Hebei 070000)

机构地区：[1]河北农业大学园林学院,河北保定071066 [2]保定市园林绿化中心,河北保定070000

出　　处：《北方园艺》2024年第5期53-61,共9页Northern Horticulture

基　　金：河北省林业和草原科技计划资助项目(1901003)。

摘　　要：以9种常绿阔叶植物叶片为试材,采用人工低温处理测定其叶片相对含水量和相对电导率,并观测越冬前后叶片的微观解剖构造,通过变异系数、相关分析从8项叶片结构指标中筛选具有代表性的指标进行隶属函数分析和抗寒性综合评价,以期为北方树种的选育提供参考依据。结果表明:在低温胁迫下,叶片的相对电导率整体表现为升高趋势、相对含水量整体表现为下降趋势。下表皮、栅栏组织较厚的叶片抗寒性较强,栅海比值和组织结构紧密度越大的植物受低温影响越小。越冬前后,阔叶植物的抗寒排序差异较大,较抗寒的树种有大叶女贞、红叶石楠、广玉兰等。Nine evergreen broad-leaved plant leaves were used as test materials,and their relative water content and relative conductivity were measured by artificial low-temperature treatment.The micro anatomical structure of the leaves before and after overwintering was observed.Through coefficient of variation and correlation analysis,representative indicators of the eight leaf structure indicators were selected for membership function analysis and comprehensive evaluation of cold resistance,in order to provide reference for the breeding of northern tree species.The results showed that with the extension of freezing time,the relative electrical conductivity of leaves showed an increasing trend and the water content of leaves showed a decreasing trend.Leaves with thicker lower epidermis and palisade tissue had stronger cold resistance,while plants with higher P/S and tissue structure tightness were less affected by low temperature.Before and after overwintering,there was a significant difference in the cold resistance ranking of broad-leaved plants.The more cold resistant tree species include Ligustrum compactum,Photinia fraseri,Magnolia grandiflora L.,etc.

关 键 词：常绿阔叶植物 低温胁迫 叶片解剖构造 抗寒性 

分 类 号：S688[农业科学—观赏园艺] S731[农业科学—园艺学]