对紫藤和凌霄花的输水结构与水流速度的初步研究  

A PRELIMINARY STUDY ON THE WATER TRANSPORT STRUCTURES AND WATER FLOW VELOCITY OF WISTARIA SINENSIS SWEET AND CAMPSIS GRANDIFLORA LOISE

作　　者：张秀军[1] 孟利军[2] 罗立新 吴树明[3] 

机构地区：[1]唐山师范专科学校生物系,唐山063000 [2]唐山大学化学工程系,唐山063000 [3]南开大学生物系,天津300071

出　　处：《南开大学学报（自然科学版）》2001年第2期95-98,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金!(396 70 46 )

摘　　要：用热脉冲技术 ,测定了南开大学校园内 2种藤本植物紫藤 (WistariasinensisSweet)和凌霄花 (Campsisgrandiflo raLoise)茎干的液流速度 ,并对两种植物的输水结构进行了解剖学研究 .结果表明 ,两种植物一天中的液流速度均较高 ,且最大值位于靠近形成层的区域 .两种植物输水结构也表现出了相似的特征 ,液流速度与其解剖结构密切相关 .The heat pulse technique was applied to determine the stem water folw velocity of Wistaria sinensis Sweet and Campsis grandiflora Loise in Nankai University campus. The water transport structures of these two plants were studied by means of wood anatomical method. The results showed that there were little changes of water folw velocity and the velocity is relatively high all the day. The relative point where the maximum sapflow velocity occurred is near the cambium. The characteristics of the water transport structures are similar in these two plants. There are close relationships between sapflow velocity and anatomical structures of xylem.

关 键 词：热脉冲技术 紫藤 凌霄花 输水结构 液流速度 导管 藤本植物 解剖学结构 

分 类 号：Q944.55[生物学—植物学] Q945.171