钙试剂对干旱胁迫玉米脱落酸与木质部汁液pH的影响  

Effects of EGTA,verapamil and trifluoperazine on ABA,and xylem sap pH of maize seedling under drought stress

作　　者：刘子会[1] 郭秀林[1] 马春红[1] 李广敏[1] 

机构地区：[1]河北省农林科学院遗传生理研究所,石家庄050051

出　　处：《中国生态农业学报》2006年第3期100-102,共3页Chinese Journal of Eco-Agriculture

基　　金：河北省自然科学基金项目(302466;200600727);河北省农林科学院重点项目(A03-1-02-14);国家"粮食丰产科技工程"项目河北省课题(2004BA520A07)资助

摘　　要：试验研究钙试剂对干旱胁迫玉米脱落酸与木质部汁液pH的影响结果表明,EGTA、异博啶和三氟啦嗪处理均能提高玉米木质部汁液pH;EGTA、异博啶处理后玉米叶茎根中脱落酸含量降低,木质部汁液中脱落酸浓度与叶茎根脱落酸含量并没有明显相关性,表现出复杂变化;三氟啦嗪处理后玉米根中脱落酸含量升高,茎、叶中脱落酸含量降低,且叶木质部汁液中脱落酸浓度亦降低,而茎、根木质部汁液中脱落酸浓度无明显变化。The effects of EGTA, verapamil and trifluoperazine on ABA contents of organs and xylem sap pH of maize seedling under drought stress were studied. The results show that the xylem sap pH of maize under drought stress is increased after treated by EGTA, verapamil or trifluoperazine. When the maize is treated by EGTA or verapamil, the ABA contents of leaf, stem or root decrease and are not related to the ABA concentration in the sap whose changes are complex. After being treated by trifluoperazine, the ABA content in the root increases, but decreases in the leaf and the stem. At the same time, the ABA concentration decreases in the leaf sap, but ABA concentrations in the stem and leaf doesn＇ t change obviously.

关 键 词：脱落酸 木质部汁液 PH 钙试剂 干旱胁迫 玉米 

分 类 号：S513[农业科学—作物学] S642.2