Abstract
Among the crop production factors, nitrogen is the most important limiting factor of crop production. The relationship between photosynthesis and nitrogen nutrition has been widely studied in different crops. However, in cotton leaf photosynthetic traits and nitrogen use efficiency are less clear at the seedling stage. It was found that low nitrogen supply significantly reduced cotton growth, photosynthesis, nitrogen content and ultimately the nitrogen use efficiency except root morphological traits. Correspondingly, all the parameters related to gaseous exchange were very sensitive to nitrogen deficiency and therefore reduced. However, the intercellular CO2 concentration and nitrogen efficiency ratio were increased under low N supply. These results suggest the possibility of utilizing these traits as indicators for optimum nitrogen fertilization and development of nitrogen efficient genotypes. Further, this could lead to the development of sustainable agriculture for better crop productivity and profitability as well as environmental protection.
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Claims 9
Claim · model-written summary
Low nitrogen significantly reduced cotton growth.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- low nitrogen supplye0
- Outcome
- cotton growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen supply significantly reduced cotton growth, photosynthesis, nitrogen content and ultimately the nitrogen use efficiency except root morphological traits”
Claim · model-written summary
Low nitrogen significantly reduced cotton photosynthesis.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- low nitrogen supplye0
- Outcome
- photosynthesise0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen supply significantly reduced cotton growth, photosynthesis, nitrogen content and ultimately the nitrogen use efficiency except root morphological traits”
Claim · model-written summary
Low nitrogen significantly reduced cotton nitrogen content.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- low nitrogen supplye0
- Outcome
- nitrogen contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen supply significantly reduced cotton growth, photosynthesis, nitrogen content and ultimately the nitrogen use efficiency except root morphological traits”
Claim · model-written summary
Low nitrogen significantly reduced cotton nitrogen use efficiency.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- low nitrogen supplye0
- Outcome
- nitrogen use efficiencye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen supply significantly reduced cotton growth, photosynthesis, nitrogen content and ultimately the nitrogen use efficiency except root morphological traits”
Claim · model-written summary
Root morphological traits were an exception to the reported low nitrogen reductions.
- Taxon
- cottonGossypium hirsutume0t0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low nitrogen supply significantly reduced cotton growth, photosynthesis, nitrogen content and ultimately the nitrogen use efficiency except root morphological traits”
t0“cotton”
Claim · model-written summary
Gas exchange parameters were reduced under nitrogen deficiency.
- Taxon
- cottonGossypium hirsutume0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all the parameters related to gaseous exchange were very sensitive to nitrogen deficiency and therefore reduced”
t0“cotton”
Claim · model-written summary
Intercellular CO2 concentration increased under low nitrogen.
- Taxon
- cottonGossypium hirsutume0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the intercellular CO2 concentration and nitrogen efficiency ratio were increased under low N supply”
t0“cotton”
Claim · model-written summary
Nitrogen efficiency ratio increased under low nitrogen.
- Taxon
- cottonGossypium hirsutume0t0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the intercellular CO2 concentration and nitrogen efficiency ratio were increased under low N supply”
t0“cotton”
Claim · model-written summary
The authors suggest these traits as indicators for optimum nitrogen fertilization and development of nitrogen efficient genotypes.
- Taxon
- cottonGossypium hirsutume0t0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“utilizing these traits as indicators for optimum nitrogen fertilization and development of nitrogen efficient genotypes”
t0“cotton”
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