Abstract
Heavy metals are contaminants of much environmental apprehension, as they are hazardous to human being and other biota. The chelates react with the heavy metals and free that metal from the cation exchange sites and resulting the metal chelated species and move readily into the soil. For this purpose, a hydroponic stud was conducted in wire house of Saline Agricultural Research Center to monitor the potential of Maize (Zea mays L.) cultivars against cadmium (Cd) and lead (Pb) toxicity. A chelated source Ethylene Diamine Tetra Acetic acid (EDTA) was used to evaluate the uptake of Cd and Pb. The experiment was comprised of nine treatments. As T1= Control, T2= Cd 25 ppm, T3= Pb 50 ppm, T4= Cd 50 ppm, T5= Pb 100 ppm, T6= Cd 25 ppm+EDTA, T7= Cd 50 ppm+EDTA, T8= Pb 50 ppm+EDTA and T9= Pb 100 ppm+EDTA. Two maize cultivars Syngenta-8711 and 33H-25 were used. It was concluded that the parameters like shoot fresh and dry weight, chlorophyll content (SPAD value) and relative water content decreased under toxic level of Cadmium (Cd) and Lead (Pb). The addition of EDTA increased the uptake of Cd and Pb which ultimately reduced the overall the plant growth. Among the maize hybrids, maximum Cd concentration was observed in Syngenta-33-H-25 while minimum in Syngenta-8711 at all cadmium stress levels. At all the lead stress levels the maximum Pb concentration was observed in Syngenta-33-H-25. The minimum Pb concentration was recorded in Syngenta-8711 at all lead stress levels.
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Claims 9
Claim · model-written summary
Toxic cadmium and lead reduced maize shoot fresh and dry weight.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot fresh and dry weight, chlorophyll content (SPAD value) and relative water content decreased under toxic level of Cadmium (Cd) and Lead (Pb).”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
Toxic cadmium and lead reduced maize chlorophyll content and relative water content.
- Treatment
- Cadmium (Cd) and Lead (Pb)e0
- Outcome
- chlorophyll content (SPAD value) and relative water contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot fresh and dry weight, chlorophyll content (SPAD value) and relative water content decreased under toxic level of Cadmium (Cd) and Lead (Pb).”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
EDTA increased maize Cd uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of EDTA increased the uptake of Cd and Pb”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
EDTA increased maize Pb uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of EDTA increased the uptake of Cd and Pb”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
Increased metal uptake following EDTA reduced overall maize growth.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of EDTA increased the uptake of Cd and Pb which ultimately reduced the overall the plant growth.”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
Syngenta-33-H-25 had the maximum cadmium concentration across cadmium stress levels.
- Material
- Syngenta-33-H-25e0
- Outcome
- Cd concentratione0
- Direction
- maximume0
- Qualifier
- all cadmium stress levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum Cd concentration was observed in Syngenta-33-H-25 while minimum in Syngenta-8711 at all cadmium stress levels.”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
Syngenta-8711 had the minimum cadmium concentration across cadmium stress levels.
- Material
- Syngenta-8711e0
- Outcome
- Cd concentratione0
- Direction
- minimume0
- Qualifier
- all cadmium stress levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum Cd concentration was observed in Syngenta-33-H-25 while minimum in Syngenta-8711 at all cadmium stress levels.”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
Syngenta-33-H-25 had the maximum lead concentration at all lead stress levels.
- Material
- Syngenta-33-H-25e0
- Outcome
- Pb concentratione0
- Direction
- maximume0
- Qualifier
- all the lead stress levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At all the lead stress levels the maximum Pb concentration was observed in Syngenta-33-H-25.”
t0“maize (Zea mays L.) hybrids”
Claim · model-written summary
Syngenta-8711 had the minimum lead concentration at all lead stress levels.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The minimum Pb concentration was recorded in Syngenta-8711 at all lead stress levels.”
t0“maize (Zea mays L.) hybrids”
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