报春叶片解剖结构与耐热性的关系  

Relationship between Leaf Anatomical Structure and Heat Resistance of Primula

作　　者：胡伟娟[1] 张启翔[1] 潘会堂[1] 董玲玲[1] 

机构地区：[1]北京林业大学园林学院,北京100083

出　　处：《华中农业大学学报》2010年第3期363-368,共6页Journal of Huazhong Agricultural University

基　　金：国家"十一五"科技支撑计划课题(2006BAD01A18);国家林业局重点项目(2003-008-L0)资助

摘　　要：为研究适宜报春属植物耐热性的评价指标体系,筛选出耐热性强的报春种,测定了6种报春的热害指数,并利用扫描电镜对6种报春进行了叶片解剖结构的观察。结果表明:灰岩皱叶报春(Primula forrestii)及小报春(P.forbesiifranch)的耐热性较强,黄花九轮草(P.veris)、岩生报春(P.saxatilis)和鄂报春(P.obconica)的耐热性中等,滇北球花报春(P.denticulatas sp.sinodenticulata)耐热性较差;影响报春属植物耐热性的叶片解剖性状主要有叶片厚度、叶肉细胞排列紧密程度、开张气孔数量及叶片的表皮毛及粉粒数量等指标。The index of heat injury and leaf anatomical structure under the scanning electron microscope of six Primula species were measured to study the responsive mechanism of Primula to the high temperature and to select the heat-resistant Primula species.The results showed that Primula forrestii and P.malacoides franch had higher heat-resistance than that of P.obconica,P.veris,P.saxatilis,P.denticulatess.,P.sinodenticulata with lowest heat-resistance.Leaf anatomical structures of Primula associated with heat-resistance included leaf thickness,tightness of mesophyll cell arrangement,the number of open stomata,the number of epidermal hair and powders of leaves.

关 键 词：报春 叶片解剖结构 耐热性 

分 类 号：S682.39[农业科学—观赏园艺]