| Synergistic interaction of NaCI and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance |
| |
| 作者姓名： | WEI Kang SHAMSI Imran Haider ZHANG Guo-ping |
| |
| 作者单位： | Department of Agronomy, Zhejiang University, Hangzhou 310029, China |
| |
| 基金项目： | Project （No. Z304104） supported by Natural Science Foundation of Zhejiang Province, China |
| |
| 摘 要： | The effects of salinity （50 mmol/L NaCI） 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 Cd^2＋, Zn^2＋, Ca^2＋, Mg^2＋, K^＋ and Na^＋were also determined in seeds and pods. Huachun 18 suffered a more serious decrease than NGB in net photosynthetic rate （P,） in the treatments of salinity stress alone and combined stress （NaCl＋Cd）, showing that it is relatively sensitive to salinity. The decrease in P, 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 Zn^2＋, Ca^2＋, Mg^2＋, 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.
|
| 关 键 词： | 氯化钠 镉 大豆 基因型 耐盐性 生长 光合参数 协同效应 |
| 收稿时间： | 2006-04-17 |
| 修稿时间： | 2006-05-24 |
Synergistic interaction of NaCI and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance |
| |
| WEI Kang SHAMSI Imran Haider ZHANG Guo-ping.Synergistic interaction of NaCI and Cd on growth and photosynthetic parameters in soybean genotypes differing in salinity tolerance[J].Journal of Zhejiang University Science,2007,8(4):266-271. |
| |
| Abstract: | |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
|
