摘要
本文用放射性同位素^(42)K、^(24)Na、^(45)Ca作示踪,配以P^(K)、P^(Na)离子选择电极测量溶液的电导率和电位变化。研究五种冠醚化合物对南大八号小麦幼苗根系吸收与运转无机离子(K^(+)、Na^(+)、Ca^(艹))的作用。实验结果表明,五种冠醚化合物对小麦幼苗根系具有不同程度的促进吸收和加速运转K^(+)、Na^(+)、Ca^(艹)的作用,其中以1号冠醚化合物作用最为明显,在K^(+)、Na^(+)、Ca^(艹)>中对K^(+)的作用最为突出。
The ion-selective electrode and isotope tracing technique arc applied in this study of metal ion transport in plant roots.The transport process in living plants can be followed continuously.With isotope tracing and ion-selective electrode technique,the influence of five crown ether dyes on transport process of the K^(+),Na^(+)and Ca^(++)in wheat root system was studied.Preliminary investigation indicated that five crown ether dyes in very low concentrations(1×10^(-3)M)promoted the transport of potassium ion;on the other hand,the effect of 5crown ethers on the absorption of sodium and calcium ion by wheat root system was irregular,some absorbed more and some less than the control group.The 4-(N,N-dimethyl-amino-benzene)-1-azo-4-benzo-15-crown-5 was the most effective among the five crown ether dyes.When the root system of single,young wheat was treated with dilute solution of a crown ether dye,4-(N,N-dimethyl-amino-benzene)-l-azo-4-benzo-15-crown-5,the dye penetrated through the cell membranes of the roots and was absorbed on the sufaqe of micelles.
作者
周爱堂
傅庭治
欧惠春
黄德培
王德粉
张进其
黄良保
阙如生
张正仁
Zhou Aitang;Fu Tingzhi;Ou Huichun;Huang Depei;Wang Defen;Zhang Jinqi;Huang Liangbao;Que Rusheng;Zhang Zhengren(Department of Biology Nanjing University,Nanjing;Coordination Chemistry Institute,Nanjing University,Nanjing;Institute of Spartina Anglica and Tidal land Development,Nanjing University Nanjing)
出处
《高等学校化学学报》
SCIE
EI
CAS
1982年第2期264-270,共7页
Chemical Journal of Chinese Universities
