西伯利亚蓼不同海拔高度叶片气孔特征比较  

COMPARISON OF THE POLYGONUM SIBIRICUM(LAXM.)TZVELEV LEAF STOMATAL CHARACTERISTICS ALONG THE ALTITUDINAL GRADIENT

作　　者：桑周卓玛 SANG Zhou-zhuo ma(Yushu forestry and grassland administrative service center,Yushu Qinghai 815000,China)

机构地区：[1]玉树市林业和草原综合服务中心,青海玉树812100

出　　处：《青海草业》2023年第4期14-17,共4页Qinghai Prataculture

摘　　要：为了分析西伯利亚蓼叶片气孔对海拔高度的响应,采用过氧化氢—醋酸离析法,分析观察了不同海拔梯度(2232 m、3660 m、4052 m、4240 m、4444 m)西伯利亚蓼叶片气孔特征。结果表明:在海拔2232 m,西伯利亚蓼叶片上、下表皮气孔外纵径、外横径、外纵径×外横径均为最大,分别为36.43μm、28.10μm、1023.68μm2,37.82μm、24.90μm和941.72μm2(P≤0.05)。随着海拔上升,西伯利亚蓼气孔密度增加,气孔外纵径×外横径降低,是植物适应高海拔环境变化的适应策略的结果。In order to analysis the responses to altitudinal gradients of Polygonum sibiricum Laxm.Tzvelev leaf stomata,the paper observed the stomatal characteristics of Knorringia sibiricum Laxm.leaf at 2232 m,3660 m,4052 m,4240 m and 4444 m altitude using H202-CH2CO0OH method.The results showed the outer longitudinal diameter,outer transverse diameter,the outer longitudinal diameterxouter transverse diameter of upper and lower epidermis were 36.43μm,28.1μm,1023.68μm^(2),37.82μm,24.9μm and 941.72μm^(2),which were the maximum values.The stomatal density increased while the outer longitudinal diameter×outer transverse diameter decreased with altitude.Our results reflected the adaptation response of Polygonum sibiricum Laxm.species to high altitude environmental changes.

关 键 词：西伯利亚蓼 海拔梯度 气孔 

分 类 号：S451[农业科学—植物保护]