电场处理后白沙蒿气孔密度及分布对沙地干旱胁迫的响应  

Responses of stomatal density and distribution in leaves of Artemisia sphaerocephala krasch to drought stress under electric field treatment

作　　者：那日[1] 杨生[2] 黄洪云[1] 

机构地区：[1]内蒙古大学理工学院物理系,内蒙古呼和浩特010021 [2]中国农业科学院草原研究所,内蒙古呼和浩特010010

出　　处：《干旱地区农业研究》2005年第4期151-154,共4页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金(50267001)

摘　　要：用不同电场条件处理沙生植物白沙蒿种子,采用人工模拟干旱试验方法,研究电场处理后其幼苗对土壤干旱和温度变化的响应。结果表明,电场处理后随土壤干旱程度加剧,叶片气孔密度有上升趋势,气孔在叶片上的分布趋向均匀;随温差变化加大,叶片气孔密度有下降趋势,其分布趋向均匀,电场处理提高了白沙蒿对沙漠干旱环境的适应性。Under the treatments of different electric field intensity, a simulating experiment was conducted to study the effects of electric field on drought resistance of Artemisia sphaerocephala krasch in seedling stage. The results showed that electric field treatment could increase the stomatal density under drought stress and decrease it under high temperature variation, and the stomatal distribution in leaves tended to be uniform. The electric field was an effective way to strengthen the adaptability of Artemisia sphaerocephala krasch to the arid environment in desert areas.

关 键 词：电场处理 白沙蒿 干旱胁迫 叶片 气孔密度 气孔分布 

分 类 号：S793[农业科学—林木遗传育种]