Abstract
：Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply. In this experiment, water was supplied in three levels: high(18% of soil, sufficient), middle (14%, light stress) and low (10%, severe stress). And there were four types of mineral nutrition: contrast, urea (297mgN/kg soil), calcium superphosphate (110mgP2O5/kg soil) and the mixture of N and P (297mgN+110mgP/kg soil). The results were as the following: the chlorophyll (Chl) content decreased dramatically while the malondialdehyde (MDA)content increased under severe water stress. The diameters of stomata remained the same with those under sufficient water. These facts revealed that the cells of wheat leave were destroyed by severe water stress, and although they were trying to adapt to the environment, they couldn't. However, under light water stress, the contents of Chl and MDA didn't change obviously and the stomata tended to close, showing the self-regulation of leaf cells. Anyway, there was negative correlation between water saturation deficit (WSD) and Chl content, so was there between MDA and Chl content. The phenomenon of RWC decrease caused by mineral nutrition was also observed. But this decrease didn't affect Chl and MDA. The mechanism was that the soil had been nutritional deficient and this mineral nutrition could meet the need of plants growing for other substances except water.
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Claims 7
Claim · model-written summary
Chlorophyll content decreased dramatically under severe water stress in spring wheat.
- Taxon
- spring wheat
Triticum aestivume0 - Treatment
- severe water stresse1
- Outcome
- chlorophyll (Chl) contente1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e1“the chlorophyll (Chl) content decreased dramatically while the malondialdehyde (MDA)content increased under severe water stress”
Claim · model-written summary
Malondialdehyde content increased under severe water stress in spring wheat.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- severe water stresse1
- Outcome
- malondialdehyde (MDA)contente1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e1“the chlorophyll (Chl) content decreased dramatically while the malondialdehyde (MDA)content increased under severe water stress”
Claim · model-written summary
Chl and MDA contents did not change obviously under light water stress.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- light water stresse3
- Outcome
- contents of Chl and MDAe3
- Direction
- didn't changee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e3“under light water stress, the contents of Chl and MDA didn't change obviously”
Claim · model-written summary
Mineral nutrition caused a decrease in relative water content in spring wheat.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- mineral nutritione4
- Outcome
- RWC decreasee4
- Direction
- decreasee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e4“The phenomenon of RWC decrease caused by mineral nutrition was also observed”
Claim · model-written summary
Chlorophyll content was negatively correlated with water saturation deficit in spring wheat.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- water saturation deficit (WSD)e5
- Outcome
- Chl contente5
- Direction
- negative correlatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e5“there was negative correlation between water saturation deficit (WSD) and Chl content, so was there between MDA and Chl content”
Claim · model-written summary
Chlorophyll content was negatively correlated with MDA content in spring wheat.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- MDAe5
- Outcome
- Chl contente5
- Direction
- negative correlatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e5“there was negative correlation between water saturation deficit (WSD) and Chl content, so was there between MDA and Chl content”
Claim · model-written summary
Mineral nutrition did not affect chlorophyll or MDA content in spring wheat.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- mineral nutritione4
- Outcome
- Chl and MDAe7
- Direction
- didn't affecte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress significantly made relative water content (RWC) in spring wheat leaves drop sharply”
e4“The phenomenon of RWC decrease caused by mineral nutrition was also observed”
e7“But this decrease didn't affect Chl and MDA”