不同生境下狗牙根叶表皮细胞的比较研究  

A Comparison Study of Leaf Epidermis Cell of Cynodon dactylon in Different Habitats

作　　者：陈蕊 程丽霞 费永俊[1] Chen Rui;Cheng Lixia;Fei Yongjun(College of Gardening and Horticulture, Yangtze University ,Jingzhou 434025)

机构地区：[1]长江大学园艺园林学院,荆州434025

出　　处：《湖北林业科技》2020年第6期1-4,共4页Hubei Forestry Science and Technology

基　　金：湖北省科技厅攻关项目(编号:2002AA3001C99);湖北省教育厅重大科研项目(编号:2002Z0007);湖北省涝渍灾害与湿地农业重点实验室开放基金(编号:HNKFJ2002C03);湖北省教育厅优秀中青年科技创新团队资助项目(鄂教科[2003年7号]文-12);国家教育部新世纪优秀人才支持计划(2005-2007)。

摘　　要：以生长在阳地旱生、阳地中生、阴地旱生3种不同生境下的野生狗牙根的叶表皮细胞为材料,分别测量了气孔数、气孔密度、长细胞、短细胞、气孔的长和宽。结果表明:狗牙根叶片长细胞的大小顺序:阳地旱生>阳地中生>阴地旱生,3种生境下长细胞的大小有显著差异(p<0.05);短细胞的大小在阳地旱生与阳地中生、阴地旱生差异显著(p<0.05),但阳地中生、阴地旱生差异不显著;气孔的长宽比在3种生境下有显著差异(p<0.05),气孔的长宽比顺序为阳地旱生<阳地中生<阴地旱生;3种生境下的狗牙根叶片的气孔密度差异显著(p<0.05),阳地中生>阳地旱生>阴地旱生,分别为319.30,240.01,278.22个·mm^-2。The leaf epidermis cells of wildness Cynodon dactylon which grew in 3 different environments were investigated.The appearance indexes of their leaves,such as the number of stoma,stoma density,the length and width of long cell,short cell and stoma were measured.The result showed that the size order of long cell of the leaf epidermis in Cynodon dactylon were sunny dryland,sunny ground and shady dryland.The size of leaf epidemis long cell demonstrated remarkable difference(p<0.05).The size of the short cell in sunny ground and sunny non-irrigated farmland or shady non-irrigated field was significant(p<0.05).But the difference in sunny filed and shady non-irrigated ground was not remarkable.The ratio of length to width of the stoma showed remarkable difference(p<0.05).The order of ratio was sunny non-irrigated field,shady non-irrigated ground,shady non-irrigated.The stoma density of Cynodon dactylon leaf epidermis in three different habitats demonstrated significant difference(p<0.05).The sunny field,the sunny non-irrigated field,the shady non-irrigated field,which were 319.3,278.22,240.01个·mm^-2separately.

关 键 词：生境 狗牙根 叶表皮细胞 适应性 

分 类 号：Q94578[生物学—植物学] S6884[农业科学—观赏园艺]