论文部分内容阅读
干旱胁迫促使植物组织脱落酸(ABA)的迅速重新分布和积累(Zeevaart和Creelmen,1988)。结果,围绕叶片保卫细胞非原质体的ABA浓度增加促使气孔导度减小(Hartung和Davies,1991)。越来越多的实验室和大田资料表明气孔导度(SC)较大程度受木质部汁液的ABA(X—ABA),而不是受叶组织的ABA
Drought stress promotes the rapid redistribution and accumulation of abscisic acid (ABA) in plant tissues (Zeevaart and Creelmen, 1988). As a result, increased ABA concentration around the lamina propria apoplast contributes to reduced stomatal conductance (Hartung and Davies, 1991). A growing number of laboratory and field data indicate that stomatal conductance (SC) is more affected by ABA (X-ABA) in xylem juice than by leaf tissue ABA