Abstract
There have been dramatic developments in industry and the increasing of urban population since 1980s, which related with the amount of disposal of industrial and domestic wastewater increasing in the last years Many farmers in the suburban area get to irrigate their land with such disposing wastewater. Many experiences have shown that the sewage irrigation can increase organic matter content in soil, and is an important method to alleviate water deficit. However, it may also cause some negative effects as decreasing enzyme activity of soil, accumulating heavy metals in soil and crops, lowering poorer quality of agricultural products, and reducing crude protein and amino acids of the crop seeds. This paper deals with the effects of stress of sewage irrigation on spring wheat root antioxidant enzymes activity and seedling growth under utilizing a water cultivation experiment. The result showed that: (1) comparing with the control group, the spring wheat seedling under sewage irrigation has small height and short root length. And numbers of root, fresh and dry weight of stem, leaf and root decreased drastically; (2) Speeding up the declination of green leaves and root of spring wheat, reducing the root vigor and significantly increasing the MDA content in root have been proved relating with the stress of sewage irrigation at the same time; (3) Sewage irrigation stress also stimulated POD and SOD activities, but with the extended stress, the activities of SOD turned to be restrained, yet decreased dramatically; (4) The spring wheat seedling under disposed sewage irrigation was not significantly different from the control group.
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Claims 8
Claim · model-written summary
Sewage irrigation reduced seedling height and root length versus control.
- Taxon
- spring wheat
Triticum aestivume0 - Treatment
- sewage irrigatione0
- Outcome
- height and short root lengthe0
- Direction
- smalle0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“comparing with the control group, the spring wheat seedling under sewage irrigation has small height and short root length”
Claim · model-written summary
Sewage irrigation drastically reduced root number and fresh and dry weights of stem, leaf and root.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- Sewage Irrigationt1
- Outcome
- numbers of root, fresh and dry weight of stem, leaf and roote0
- Direction
- decreased drasticallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“numbers of root, fresh and dry weight of stem, leaf and root decreased drastically”
t0“Spring Wheat”
t1“Sewage Irrigation”
Claim · model-written summary
Sewage irrigation accelerated decline of green leaves and roots.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- Sewage Irrigationt1
- Outcome
- declination of green leaves and roote0
- Direction
- Speeding upe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Wheat”
t1“Sewage Irrigation”
e0“Speeding up the declination of green leaves and root of spring wheat”
Claim · model-written summary
Sewage irrigation reduced root vigor.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- Sewage Irrigationt1
- Outcome
- root vigore0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Wheat”
t1“Sewage Irrigation”
e0“reducing the root vigor”
Claim · model-written summary
Sewage irrigation significantly increased root MDA content.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- Sewage Irrigationt1
- Outcome
- MDA content in roote0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Wheat”
t1“Sewage Irrigation”
e0“significantly increasing the MDA content in root”
Claim · model-written summary
Sewage irrigation initially stimulated POD and SOD activities.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- Sewage irrigation stresse0
- Outcome
- POD and SOD activitiese0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Wheat”
e0“Sewage irrigation stress also stimulated POD and SOD activities”
Claim · model-written summary
With extended sewage stress, SOD activity became inhibited and fell dramatically.
- Taxon
- Spring WheatTriticum aestivumt0
- Treatment
- extended stresse0
- Outcome
- activities of SODe0
- Direction
- decreased dramaticallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Spring Wheat”
e0“with the extended stress, the activities of SOD turned to be restrained, yet decreased dramatically”
Claim · model-written summary
Seedlings under disposed sewage irrigation did not differ significantly from controls.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- disposed sewage irrigatione0
- Outcome
- seedlinge0
- Direction
- not significantly differente0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The spring wheat seedling under disposed sewage irrigation was not significantly different from the control group”
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