Journal of Agricultural Science and Technology
Journal of Agricultural Science and Technology
JAST
Agriculture
http://jast.modares.ac.ir
1
admin
1680-7073
2345-3737
10.22034/jast
en
jalali
1391
12
1
gregorian
2013
3
1
15
2
online
1
fulltext
en
Response of Corn to Cadmium and Drought Stress and Its Potential Use for Phytoremediation
In the present study, the effects of different cadmium (Cd) levels of irrigation water (0, 5, 10 and 20 mg L<sup>-1</sup>) on corn plants (foliage) under different irrigation intervals (1, 3, and 7 days) were investigated. Clear Cd toxicity symptoms appeared on the plants at the end of the experiment. The results showed that stem dry weight (DW) followed by transpiration (T) and plant height were the measured plant parameters most sensitive to increasing Cd levels of irrigation water. In addition, Cd reduced water uptake by corn and led to more soil moisture. The results also demonstrated that corn might produce more shoot biomass with Cd application, which should be taken into consideration if no visible symptoms of Cd toxicity and considerable amounts of the metal uptake are present. Cadmium application through irrigation did not show a marked impairment in the nutrient status of the plants. Moreover, accumulation of Cd in the leaves was more than the stems by 24, 56, and 27% at 1, 3, and 7-day irrigation frequencies, respectively. Also, corn stem was found to be more sensitive to Cd than leaf. The results showed that corn might be used for phytoremediation of Cd under optimum moisture conditions and light contamination of the soil. Furthermore, shoot Cd concentration followed an asymptote pattern as a function of soil Cd, which was expressed by a plateau-type model under each irrigation interval.
Cadmium,Corn,Drought,Phytoremediation,Stress.
303
310
http://jast.modares.ac.ir/browse.php?a_code=A-23-11598-62&slc_lang=en&sid=23
A.
Azizian
A.
Azizian
100319475328460046481
100319475328460046481
Yes
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
S.
Amin
S.
Amin
100319475328460046482
100319475328460046482
No
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
M.
Maftoun
M.
Maftoun
100319475328460046483
100319475328460046483
No
Department of Soil Science, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Department of Soil Science, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Y.
Emam
Y.
Emam
100319475328460046485
100319475328460046485
No
Department of Agronomy, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Department of Agronomy, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
M.
Noshadi
M.
Noshadi
100319475328460046486
100319475328460046486
No
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.
Department of Water Engineering, College of Agriculture, Shiraz University, Shiraz, Islamic Republic of Iran.