Claim · model-written summary
At medium temperature, dry weight of lettuce was highest at 600 μmol m-2 s-1.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- 600 μmol·m −2 ·s −1e4
- Outcome
- DWe4
- Direction
- higheste4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for producing the lettuce Lactuca sativa L”
e4“The LN, LA, and FW of lettuce plants were the highest at 500 μmol·m −2 ·s −1 , whereas DW was the highest at 600 μmol·m −2 ·s −1”
Title
Jing Zhou; PingPing Li; JiZhang Wang; et al. HortScience 2019. doi:10.21273/hortsci14161-19
Other claims from this paper (19)
- Intervention effect At low temperature, effective quantum yield of PSII, net photosynthetic rate and stomatal conductance were highest at 350 μmol m-2 s-1, followed by 500 μmol m-2 s-1.
- Intervention effect At low temperature, transpiration rate was highest at 350 μmol m-2 s-1, followed by 500 μmol m-2 s-1.
- Intervention effect At low temperature, N, K and P uptake were highest at 350 μmol m-2 s-1, followed by 500 μmol m-2 s-1.
- Association At low temperature, 350 μmol m-2 s-1 (followed by 500) gave higher leaf number, leaf area, dry weight and fresh weight of lettuce.
- Intervention effect At medium temperature, photosystem II quantum yield, net photosynthetic rate and stomatal conductance were higher at 350, 500 and 600 μmol m-2 s-1 than at other light intensities.
- Intervention effect At medium temperature, transpiration rate was higher at 350, 500 and 600 μmol m-2 s-1 than at other light intensities.
- Intervention effect At medium temperature, N, K and P uptake were higher at 350, 500 and 600 μmol m-2 s-1 than at other light intensities.
- Intervention effect At medium temperature, leaf number, leaf area and fresh weight of lettuce were highest at 500 μmol m-2 s-1.
- Intervention effect At high temperature, Fv/Fm, photosystem II quantum yield and net photosynthetic rate were highest at 500 μmol m-2 s-1.
- Intervention effect At high temperature, stomatal conductance and transpiration rate were highest at 500 μmol m-2 s-1.
- Intervention effect At high temperature, N, K and P uptake were highest at 500 μmol m-2 s-1.
- Intervention effect At high temperature, leaf number, leaf area and fresh weight of lettuce were highest at 600 μmol m-2 s-1.
- Intervention effect At high temperature, dry weight of lettuce was highest at 600 μmol m-2 s-1.
- Observation Fv/Fm indicated that lettuce was under stress at 600 μmol m-2 s-1 at low temperature.
- Observation Fv/Fm indicated that lettuce was under stress at 100 μmol m-2 s-1 at medium temperature.
- Observation Fv/Fm indicated that lettuce was under stress at 100-350 μmol m-2 s-1 at high temperature.
- Recommendation For low temperatures, light intensities of 350 to 500 μmol m-2 s-1 are recommended for production, with 350 optimal as supplementary greenhouse light in early spring and winter.
- Recommendation For medium temperatures, light intensities of 350 to 600 μmol m-2 s-1 are recommended, with 500 optimal in mid spring and autumn.
- Recommendation For high temperatures, light intensities of 500 to 600 μmol m-2 s-1 are recommended, with 600 optimal in late spring and early autumn.