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“dry weight decrease”

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Organism: Solanum lycopersicum ✕

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Tomato plants given 80 ppm CO2 for 1 hour each morning for 2 weeks showed a marked decrease in root dry weight.

Taxon: TomatoSolanum lycopersicume1
Organ / stage: roote1
Treatment: placed in an atmosphere containing 80ppm CO2 for 1 hour in every morning during 2 weekse1
Outcome: dry weight of roote1
Direction: decreasee1
Qualifier: markede1

Not reportedComparator

Verbatim

e1
“Tomato plants placed in an atmosphere containing 80ppm CO2 for 1 hour in every morning during 2 weeks resulted in the marked decrease in dry weight of root, and considerable decrease in net assimilation rate”
✓ located verbatim in the source · abstract, characters 1510–1717

Title

Photosynthetic activity of vegetable plants and its horticultural significance

Tadashi ITO Journal of the Japanese Society for Horticultural Science 1971. doi:10.2503/jjshs.40.383

Other claims from this paper (12)

Intervention effect In tomato, 14CO2 fixation at normal CO2 was slightly decreased after 2 hours at 80 ppm CO2.
Association The tomato after-effect of low-CO2 experience appeared only under low CO2 concentration combined with a certain light intensity.
Intervention effect Cucumber plants showed no after-effect of low-CO2 experience.
Intervention effect In cucumber, total 14C fixation was clearly decreased at very low CO2 concentration.
Intervention effect Downward translocation of 14C-assimilates to the roots was restricted more in cucumber than in tomato at 80 ppm CO2 in the light.
Observation In cucumber during normal photosynthesis in the light, translocation of assimilates from leaves into the roots was considerably restricted.
Observation Tomato plants had a CO2 compensation concentration of 38±2 ppm in a closed system at 20,000 lux.
Observation Cucumber plants had a CO2 compensation concentration of 65±4 ppm in a closed system at 20,000 lux.
Observation CO2 evolved through respiration into CO2-free air was higher in cucumber.
Intervention effect Tomato plants kept at 80 ppm CO2 for 2 hours had lower respiratory activity in the roots.
Intervention effect Low-CO2 experience caused a considerable decrease in phosphorus uptake through tomato roots.
Intervention effect The same CO2 treatment of tomato plants caused a considerable decrease in net assimilation rate.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Salinity reduced young-plant dry weight in both ploidies, less in polyploids.

Taxon: TomatoSolanum lycopersicumt0
Treatment: salinitye0
Outcome: Dry weight of whole young plantse0
Direction: decreasede0
Qualifier: decrease being smaller in the lattere0
Comparator: both diploid and polyploid plantse0

Verbatim

t0
“Tomato under Low and High Salinity”
✓ located verbatim in the source · title, characters 76–110

e0
“Dry weight of whole young plants decreased in both diploid and polyploid plants under salinity, the decrease being smaller in the latter.”
✓ located verbatim in the source · abstract, characters 324–461

Title

Physiology of Polyploid Plants: Water Balance in Autotetraploid and Diploid Tomato under Low and High Salinity

M. TAL; I. GARDI Physiologia Plantarum 1976. doi:10.1111/j.1399-3054.1976.tb04000.x

Other claims from this paper (10)

Observation Polyploids had higher water content than diploids.
Intervention effect Salinity reduced water content in both plant types, less in polyploids.
Observation Control-grown polyploids transpired less than diploids.
Intervention effect Salinity reduced transpiration more in diploids.
Observation Detached leaves of both ploidies had similar rates of water-loss change.
Observation Control diploid leaves lost more water per leaf area during stomatal closure.
Observation Polyploid plants had fewer stomata per leaf area.
Observation Polyploid stomata were more open under control and saline conditions.
Observation Root pressure seemed higher in polyploids under control conditions.
Observation Leaf chloride concentration did not differ by ploidy in control or NaCl solution.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The same CO2 treatment of tomato plants caused a considerable decrease in net assimilation rate.

Taxon: TomatoSolanum lycopersicume1
Treatment: placed in an atmosphere containing 80ppm CO2 for 1 hour in every morning during 2 weekse1
Outcome: net assimilation ratee1
Direction: decreasee1
Qualifier: considerablee1

Not reportedComparator

Verbatim

e1
“Tomato plants placed in an atmosphere containing 80ppm CO2 for 1 hour in every morning during 2 weeks resulted in the marked decrease in dry weight of root, and considerable decrease in net assimilation rate”
✓ located verbatim in the source · abstract, characters 1510–1717

Title

Photosynthetic activity of vegetable plants and its horticultural significance

Tadashi ITO Journal of the Japanese Society for Horticultural Science 1971. doi:10.2503/jjshs.40.383

Other claims from this paper (12)

Intervention effect In tomato, 14CO2 fixation at normal CO2 was slightly decreased after 2 hours at 80 ppm CO2.
Association The tomato after-effect of low-CO2 experience appeared only under low CO2 concentration combined with a certain light intensity.
Intervention effect Cucumber plants showed no after-effect of low-CO2 experience.
Intervention effect In cucumber, total 14C fixation was clearly decreased at very low CO2 concentration.
Intervention effect Downward translocation of 14C-assimilates to the roots was restricted more in cucumber than in tomato at 80 ppm CO2 in the light.
Observation In cucumber during normal photosynthesis in the light, translocation of assimilates from leaves into the roots was considerably restricted.
Observation Tomato plants had a CO2 compensation concentration of 38±2 ppm in a closed system at 20,000 lux.
Observation Cucumber plants had a CO2 compensation concentration of 65±4 ppm in a closed system at 20,000 lux.
Observation CO2 evolved through respiration into CO2-free air was higher in cucumber.
Intervention effect Tomato plants kept at 80 ppm CO2 for 2 hours had lower respiratory activity in the roots.
Intervention effect Low-CO2 experience caused a considerable decrease in phosphorus uptake through tomato roots.
Intervention effect Tomato plants given 80 ppm CO2 for 1 hour each morning for 2 weeks showed a marked decrease in root dry weight.

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