Claim · model-written summary
Drought stress could decrease nitrate nitrogen content in leaf lettuce by 18%.
- Taxon
- Leaf lettucee0
- Treatment
- drought stresse1
- Outcome
- nitrate nitrogen contente1
- Direction
- decreasee1
- Value
- 18%e1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Verbatim
e0“Leaf lettuce ( Lactuca sativa ) was grown hydroponically and subjected to rhizosphere drought stress by lowering the water level in the solution tub before harvesting”
e1“Appropriate drought stress using this method could increase AsA, polyphenol, and sugar content by 24%, 50%, and 17%, respectively, and decrease nitrate nitrogen content by 18% without reducing yield”
Title
Augmentation of Antioxidant Constituents by Drought Stress to Roots in Leafy Vegetables
Ryohei Koyama; Hiromichi Itoh; Syuji Kimura; et al. HortTechnology 2012. doi:10.21273/horttech.22.1.121
Other claims from this paper (6)
- Intervention effect Drought stress could increase ascorbic acid (AsA) content in leaf lettuce by 24%.
- Intervention effect Drought stress could increase polyphenol content in leaf lettuce by 50%.
- Intervention effect Drought stress could increase sugar content in leaf lettuce by 17%.
- Intervention effect Drought stress applied this way did not reduce leaf lettuce yield.
- Intervention effect Drought stress had similar effects on AsA content in four other plant species.
- Recommendation The hydroponic drought stress method is proposed to raise leafy vegetable quality without reducing yield in controlled environments.