云南箭竹3种变型的叶解剖结构与生理特性

为探明云南箭竹不同变异类型的叶解剖结构与生理特性,选择云南箭竹3种变型(云南箭竹原变型、"香笋竹""脱毛昆明实心竹")的叶片为实验材料,采用石蜡切片技术观察叶片解剖结构,利用苯酚硫酸比色法测定相关生理指标及其光合参数.结果表明,3种变型的竹叶,在叶长、叶宽、长宽比及叶面积等方面差异显著,"香笋竹"的叶片更宽、更大;在叶...

Leaf Anatomical Structure and Physiological Characteristics of Three Types of Fargesia yunnanensis

Leaves of 3 types of Fargesia yunnanensis Hsueh et Yi were observed by paraffin sectioning and the relevant physiological indexes were determined using the phenol-sulfuric acid colorimetric method for a better understanding of leaf anatomical structure and physiological characteristics.The results showed that there were significant differences in leaf length,leaf width,length-to-width ratio and leaf area of the three types of F.yunnanensis.Among them,the leaves of F.yunnanensis‘Xiangsunzhu’were wider and larger than other two types.The stomatal density,blade thickness,thickness of epidermis and cuticle,bulliform cell and fusoid cell area,vascular bundle area and distance between vascular in F.yunnanensis‘Xiangsunzhu’were the highest while those of F.yunnanensis were higher than those of F.yunnanensis f.detersa.The photosynthetic rate and transpiration rate in F.yunnanensis‘Xiangsunzhu’were significantly larger than those of F.yunnanensis and F.yunnanensis f.detersa.The content of soluble sugara and starch content of F.yunnanensis‘Xiangsunzhu’are the highest and those of F.yunnanensis were higher than those of F.yunnanensis f.deters.Since the leaves of three types of F.yunnanensis exhibted great differences,which could be used in intraspecies classification of F.yunnanensis.Considering F.yunnanensis‘Xiangsunzhu’possessed strong photosynthetic capacity and stress resistance,it could be potentially used in large-scale planting for marketing.