Abstract
Nitrogen availability is the key determinant of plant growth and development. The improvement of nitrogen use efficiency (NUE) in crops is an important consideration. In fruit and vegetables, such as watermelon, rootstocks are often utilized to control soil borne diseases and improve plant performance to a range of abiotic stresses. In this study, we evaluated the efficacy of 10 wild watermelon rootstocks (ZXG-516, ZXG-941, ZXG-945, ZXG-1250, ZXG-1251, ZXG-1558, ZXG-944, ZXG-1469, ZXG-1463, and ZXG-952) to improve the plant growth and nitrogen use efficiency (NUE) of the watermelon cultivar: Zaojia 8424. Nitrogen use efficiency (NUE) is a comprehensive parameter that represents the ability of a plant to absorb nitrogen (N) and convert the supplied resources to the dry biomass. Wild watermelon rootstocks substantially improved plant growth, rate of photosynthesis, stomatal conductivity, intercellular carbon dioxide concentration, rate of transpiration, nitrogen uptake efficiency, nitrogen use efficiency, and nitrogen utilization efficiency of watermelon. NUE of watermelon grafted onto ZXG-945, ZXG-1250, and ZXG-941 was improved by up to 67%, 77%, and 168%, respectively, at optimum N supply. Similarly, at low N supply (0.2 mM), NUE of watermelon grafted onto ZXG-1558 and ZXG-516 was improved by up to 104% and 175%, respectively. In conclusion, grafting onto some wild rootstocks can improve nitrogen use efficiency of watermelon, and this improved nitrogen use efficiency could be attributed to better N uptake efficiency of wild watermelon rootstocks.
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Claims 11
Claim · model-written summary
Wild watermelon rootstocks substantially improved plant growth of watermelon.
- Taxon
- watermelon
Citrullus lanatuse0 - Treatment
- Wild watermelon rootstockse0
- Outcome
- plant growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wild watermelon rootstocks substantially improved plant growth, rate of photosynthesis, stomatal conductivity, intercellular carbon dioxide concentration, rate of transpiration, nitrogen uptake efficiency, nitrogen use efficiency, and nitrogen utilization efficiency of watermelon”
Claim · model-written summary
Wild watermelon rootstocks substantially improved photosynthesis rate, stomatal conductivity and intercellular CO2 concentration of watermelon.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- Wild watermelon rootstockse0
- Outcome
- rate of photosynthesis, stomatal conductivity, intercellular carbon dioxide concentratione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wild watermelon rootstocks substantially improved plant growth, rate of photosynthesis, stomatal conductivity, intercellular carbon dioxide concentration, rate of transpiration, nitrogen uptake efficiency, nitrogen use efficiency, and nitrogen utilization efficiency of watermelon”
Claim · model-written summary
Wild watermelon rootstocks substantially improved transpiration rate, nitrogen uptake efficiency and nitrogen use efficiency of watermelon.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- Wild watermelon rootstockse0
- Outcome
- rate of transpiration, nitrogen uptake efficiency, nitrogen use efficiencye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wild watermelon rootstocks substantially improved plant growth, rate of photosynthesis, stomatal conductivity, intercellular carbon dioxide concentration, rate of transpiration, nitrogen uptake efficiency, nitrogen use efficiency, and nitrogen utilization efficiency of watermelon”
Claim · model-written summary
Wild watermelon rootstocks substantially improved nitrogen utilization efficiency of watermelon.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- Wild watermelon rootstockse0
- Outcome
- nitrogen utilization efficiencye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wild watermelon rootstocks substantially improved plant growth, rate of photosynthesis, stomatal conductivity, intercellular carbon dioxide concentration, rate of transpiration, nitrogen uptake efficiency, nitrogen use efficiency, and nitrogen utilization efficiency of watermelon”
Claim · model-written summary
NUE of watermelon grafted onto ZXG-945 was improved by up to 67% at optimum N supply.
- Taxon
- watermelonCitrullus lanatuse1
- Material
- ZXG-945e1
- Treatment
- grafted ontoe1
- Outcome
- NUEe1
- Direction
- improvede1
- Value
- 67%e1
- Qualifier
- at optimum N supplye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NUE of watermelon grafted onto ZXG-945, ZXG-1250, and ZXG-941 was improved by up to 67%, 77%, and 168%, respectively, at optimum N supply.”
Claim · model-written summary
NUE of watermelon grafted onto ZXG-1250 was improved by up to 77% at optimum N supply.
- Taxon
- watermelonCitrullus lanatuse1
- Material
- ZXG-1250e1
- Treatment
- grafted ontoe1
- Outcome
- NUEe1
- Direction
- improvede1
- Value
- 77%e1
- Qualifier
- at optimum N supplye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NUE of watermelon grafted onto ZXG-945, ZXG-1250, and ZXG-941 was improved by up to 67%, 77%, and 168%, respectively, at optimum N supply.”
Claim · model-written summary
NUE of watermelon grafted onto ZXG-941 was improved by up to 168% at optimum N supply.
- Taxon
- watermelonCitrullus lanatuse1
- Material
- ZXG-941e1
- Treatment
- grafted ontoe1
- Outcome
- NUEe1
- Direction
- improvede1
- Value
- 168%e1
- Qualifier
- at optimum N supplye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“NUE of watermelon grafted onto ZXG-945, ZXG-1250, and ZXG-941 was improved by up to 67%, 77%, and 168%, respectively, at optimum N supply.”
Claim · model-written summary
At low N supply, NUE of watermelon grafted onto ZXG-1558 was improved by up to 104%.
- Taxon
- watermelonCitrullus lanatuse2
- Material
- ZXG-1558e2
- Treatment
- grafted ontoe2
- Outcome
- NUEe2
- Direction
- improvede2
- Value
- 104%e2
- Qualifier
- at low N supply (0.2 mM)e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Similarly, at low N supply (0.2 mM), NUE of watermelon grafted onto ZXG-1558 and ZXG-516 was improved by up to 104% and 175%, respectively.”
Claim · model-written summary
At low N supply, NUE of watermelon grafted onto ZXG-516 was improved by up to 175%.
- Taxon
- watermelonCitrullus lanatuse2
- Material
- ZXG-516e2
- Treatment
- grafted ontoe2
- Outcome
- NUEe2
- Direction
- improvede2
- Value
- 175%e2
- Qualifier
- at low N supply (0.2 mM)e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Similarly, at low N supply (0.2 mM), NUE of watermelon grafted onto ZXG-1558 and ZXG-516 was improved by up to 104% and 175%, respectively.”
Claim · model-written summary
The improved nitrogen use efficiency of grafted watermelon could be attributed to better N uptake efficiency of wild rootstocks.
- Taxon
- watermelonCitrullus lanatuse3
- Outcome
- nitrogen use efficiencye3
- Qualifier
- better N uptake efficiencye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“this improved nitrogen use efficiency could be attributed to better N uptake efficiency of wild watermelon rootstocks”
Claim · model-written summary
Grafting onto some wild rootstocks can improve nitrogen use efficiency of watermelon.
- Taxon
- watermelonCitrullus lanatuse4
- Treatment
- grafting onto some wild rootstockse4
- Outcome
- nitrogen use efficiencye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In conclusion, grafting onto some wild rootstocks can improve nitrogen use efficiency of watermelon”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.