盐胁迫下珠美海棠体内离子分配与叶片耐盐量研究  

Ion distribution in plant and salt tolerability of leaves of Mains zumi under stress of NaCl

作　　者：冯学赞[1] 王玉珍[1] 罗景兰[1] 安忠民[1] 周贵连 

机构地区：[1]中国科学院石家庄农业现代化研究所,石家庄050021 [2]河北省林业厅,石家庄050081

出　　处：《中国生态农业学报》2003年第2期29-31,共3页Chinese Journal of Eco-Agriculture

基　　金："八五"国家科技攻关项目加强专题(85-003-03-04)

摘　　要：对NaCl胁迫下珠美海棠体内K^+、Na^+、Cl^-含量变化及电解质渗透率测定结果表明,NaCl胁迫下珠美海棠对K^+的吸收及向地上部分运输能力基本保持不变,K^+、Na^+、C1^-含量随盐胁迫浓度的增加而显著增加,Cl^-向地上部分运输的能力大于K^+、Na^+,Na^+对珠美海棠的伤害远远大于Cl^-,叶片耐Na^+量为5.76g/kg,耐Cl^-量为14.17g/kg。The contents of K+,Na+,C1-and the percentage of electrolyte leakage of Malus zumi leaves under Nad stress are measured and analyzed.The results show that the ability of absorbing and transporting K of Malus zumi changes little,and the contents of K+,Na+,C1-increase as the concentration of NaCl rises; the quantity of Cl-transported from roots to shoots is more than those of K+,Na+; the damage to the plant of Malus zumi caused by Na+is more serious than that caused by Cl.The resistibility of Malus zumi leaves to Na+is 5.76g/kg and to Cl is 14.17g/kg.

关 键 词：盐胁迫 体内离子分配 珠美海棠 叶片耐盐量 作用机制 

分 类 号：S661.4[农业科学—果树学] S311[农业科学—园艺学]