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Journal of Zhejiang University SCIENCE B 2007 Vol.8 No.4 P.266~271

10.1631/jzus.2007.B0266


Synergistic interaction of NaCl and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance


Author(s):  WEI Kang, SHAMSI Imran Haider, ZHANG Guo-ping

Affiliation(s):  Department of Agronomy, Zhejiang University, Hangzhou 310029, China

Corresponding email(s):   zhanggp@zju.edu.cn

Key Words:  Soybean (Glycine max (L.) Merr.), Salinity, Cadmium, Photosynthesis, Fluorescence


WEI Kang, SHAMSI Imran Haider, ZHANG Guo-ping. Synergistic interaction of NaCl and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance[J]. Journal of Zhejiang University Science B, 2007, 8(4): 266~271.

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author="WEI Kang, SHAMSI Imran Haider, ZHANG Guo-ping",
journal="Journal of Zhejiang University Science B",
volume="8",
number="4",
pages="266~271",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.B0266"
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%T Synergistic interaction of NaCl and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance
%A WEI Kang
%A SHAMSI Imran Haider
%A ZHANG Guo-ping
%J Journal of Zhejiang University SCIENCE B
%V 8
%N 4
%P 266~271
%@ 1673-1581
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.B0266

TY - JOUR
T1 - Synergistic interaction of NaCl and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance
A1 - WEI Kang
A1 - SHAMSI Imran Haider
A1 - ZHANG Guo-ping
J0 - Journal of Zhejiang University Science B
VL - 8
IS - 4
SP - 266
EP - 271
%@ 1673-1581
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.B0266


Abstract: 
The effects of salinity (50 mmol/L NaCl) and Cd (1 μmol/L CdCl2) as sole and combined on growth and photosynthetic parameters were studied using two soybean genotypes, Huachun 18 and NGB. The concentrations of Cd2+, Zn2+, Ca2+, Mg2+, K+ and Na+ were also determined in seeds and pods. Huachun 18 suffered a more serious decrease than NGB in net photosynthetic rate (Pn) in the treatments of salinity stress alone and combined stress (NaCl+Cd), showing that it is relatively sensitive to salinity. The decrease in Pn caused by salt stress in Huachun 18 was mainly due to the reduced total chlorophyll content and photosynthetic efficiency (the ratio of variable fluorescence to maximal fluorescence, Fv/Fm), whereas the decease in NGB was mainly related to reduced stomatal conductance (Gs). The combined stress of both Na and Cd did not induce further decrease in photosynthesis and fluorescence in the two genotypes relative to salt or Cd stress alone. Greater change in the pod concentrations of Zn2+, Ca2+, Mg2+, K+ and Na+ was detected under salt stress for Huachun 18 than for NGB. The results suggested that the interactive effect of NaCl-Cd on growth and nutrient uptake differs between the two soybean genotypes.

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Reference

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