淡黄香青叶面气孔对不同海拔高度的适应表现  

STUDY ON THE ADAPTIVE CHARACTERISTICS OF STOMATAL COMPLEX OF THE ANAPHALIS FLAVESCENS TO THE DIFFERENT ELEVATIONS

作　　者：雷波[1] 杨景宏[1] 王勋陵[1] 

机构地区：[1]兰州大学生物系

出　　处：《西北植物学报》1995年第5期92-96,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金

摘　　要：对比分析了分布于马衔山不同海拔高度的淡黄香青气孔复体的适应表现。结果表明：随海拔升高，植株叶片上气孔分布区域增大，叶两面气孔数量增加，气孔向外突起程度增加，孔下室及气孔张度增大。同时气孔每天的开放时间缩短。研究认为气孔复体的变化是淡黄香青适应高山低氧低二氧化碳分压的表现，同时也是植株因海拔升高造成的光合物质分配改变的结果。A study of the differences in morphologiy,anatomy and physiology of stomatal complex of Anaphalis fiavescens in Manhanshan Mt.is provided.With the ocvation increasing,the stomataldensity on adaxial and abaxial surface of the leayes,the protruding degree of the stomatal appara-tus,the substomatic chamber and the stomatal aperture are increased.While the time of thestomatal opening is reduced.It suggested that the altitudinal variations of stomatal complex of A.flavescens are the adaptive reactions to the low concentration of O_2 and CO_2 in alpine,and also isthe restilt of the resource allcation of the plant be changed with the elevational increasing.

关 键 词：淡黄香青 气孔复体 海拔高度 

分 类 号：Q948.1[生物学—植物学]