Search claims · PlantClaims

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Selfed seed germination decreased by 20.8% from laboratory to field.

Taxon: Blandfordia grandifloraBlandfordia grandiflorat0
Outcome: selfed seedse0
Direction: decreaseinferrede0
Value: 20.8%e0

Verbatim

e0
“but was 20.8% for selfed seeds.”
✓ located verbatim in the source · abstract, characters 825–856

t0
“Blandfordia grandiflora”
✓ located verbatim in the source · title, characters 128–151

Title

Effect of Environment on the Magnitude of Inbreeding Depression in Seed Germination in a Partially Self-Fertile Perennial Herb (Blandfordia grandiflora, Liliaceae)

Mike Ramsey; Glenda Vaughton International Journal of Plant Sciences 1998. doi:10.1086/297525

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

The gain in flow from growing at 5 and measuring at 20 degrees C was similar to the loss from growing at 20 and measuring at 5 degrees C.

Taxon: aspene1
Outcome: root water flowe0
Direction: similar in magnitudee0

Verbatim

e0
“This increase in root water flow was similar in magnitude to the decrease in root water flow observed when seedlings were grown for 28 days at 20 degrees C and root water flow was measured at 5 degrees C”
✓ located verbatim in the source · abstract, characters 797–1000

e1
“aspen (Populus tremuloides Michx.) seedlings”
✓ located verbatim in the source · abstract, characters 114–158

Title

Root water flow and growth of aspen (Populus tremuloides) at low root temperatures

X. Wan; S. M. Landhausser; J. J. Zwiazek; et al. Tree Physiology 1999. doi:10.1093/treephys/19.13.879

Other claims from this paper (12)

Intervention effect At 5 degrees C, aspen root growth was completely inhibited relative to 20 degrees C.
Intervention effect At 10 degrees C, aspen root growth was inhibited by 97% relative to 20 degrees C.
Intervention effect The 5 and 10 degree C treatments reduced aspen shoot growth, leaf size and total leaf area.
Intervention effect The 5 and 10 degree C treatments inhibited aspen root water flow.
Observation Aspen grown at 5 degrees C for 28 days showed increased root water flow when measured at 20 degrees C.
Association Reduced root flow in seedlings grown at 5 and 10 degrees C coincided with decreased stomatal conductance, net assimilation and shoot water potentials.
Association Root water flow correlated positively with aspen leaf size, total leaf area and shoot length.
Association Root water flow correlated positively with new aspen root growth.
Intervention effect Transfer from 5 to 20 degrees C for 24 hours increased root flow, shoot water potential and net photosynthesis.
Intervention effect Transfer from 10 to 20 degrees C slightly increased shoot water potential.
Intervention effect Transfer from 20 to 5 degrees C greatly reduced root flow, stomatal conductance and net photosynthesis.
Intervention effect Transfer from 20 to 5 degrees C slightly decreased shoot water potential.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Bentazone lowered ATPase activity, with larger decreases at higher concentration.

Taxon: wheatTriticum aestivumt0
Treatment: 500 μM bentazonee0
Outcome: ATPase activitye0
Direction: lowere0

Not reportedComparator

Verbatim

e0
“ATPase activity was lower in the presence of 500 μM bentazone and the magnitude of the decrease increased with the concentration of bentazone.”
✓ located verbatim in the source · abstract, characters 787–929

t0
“wheat leaf segments”
✓ located verbatim in the source · abstract, characters 378–397

Title

The role of the plasma membrane atpase in bentazone–sethoxydim antagonism

Michel Couderchet; Günter Retzlaff Pesticide Science 1991. doi:10.1002/ps.2780320304

Other claims from this paper (3)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

The smallest rooting volume showed a twofold fall in root-zone matric potential to −14 kPa.

Taxon: tomato plants ( Lycopersicon esculentum Mill. ‘Red Dwarf)Solanum lycopersicume0
Treatment: smallest RVe1
Outcome: Ψ mse1
Direction: decreasee1
Value: 2‐folde1

Verbatim

e0
“tomato plants ( Lycopersicon esculentum Mill. ‘Red Dwarf)”
✓ located verbatim in the source · abstract, characters 109–166

e1
“The root environment in the smallest RV had a 2‐fold decrease in Ψ ms to ‐14 kPa, a greater rate of decrease in Ψ ms and a lower overall Ψ ms magnitude of‐30 kPa (compared with‐12 kPa in the largest RV).”
✓ located verbatim in the source · abstract, characters 321–524

Title

Variations in water availability and temperature in the root environment during root volume restriction studies

M. B. Hurley; J. S. Rowarth; M. C. T. Trought; et al. New Zealand Journal of Crop and Horticultural Science 1998. doi:10.1080/01140671.1998.9514049

Other claims from this paper (7)

Association Media matric potential and temperature varied inversely with rooting volume.
Association The smallest rooting volume had lower overall matric potential than the largest volume.
Association The smallest volume had a greater rate of matric-potential decrease.
Observation The root environment had large daily temperature fluctuations of 12°C.
Association The smallest volume was 3°C warmer than the largest volume.
Intervention effect Modified hydroponics with frequent watering eliminated matric-potential differences among rooting volumes.
Intervention effect Modified hydroponics with frequent watering reduced media temperature differences among rooting volumes.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

The ozone-induced decline in stomatal conductance was significantly greater in tolerant clone 245 than sensitive clone 388.

Taxon: hybrid poplarPopuluse2
Material: ozone-tolerant clone 245e1
Outcome: decrease in stomatal conductancee0
Direction: greatere0
Comparator: ozone-sensitive clone 388e1

Verbatim

e0
“the magnitude of the decrease in stomatal conductance was significantly greater in the ozone-tolerant clone”
✓ located verbatim in the source · abstract, characters 664–771

e1
“ozone-sensitive clone 388 and the ozone-tolerant clone 245”
✓ located verbatim in the source · abstract, characters 506–564

e2
“hybrid poplar (Populus maximowizii x Populus trichocarpa)”
✓ located verbatim in the source · abstract, characters 340–397

Title

Ozone Sensitivity in Hybrid Poplar Is Correlated with a Lack of Defense-Gene Activation

Jennifer Riehl Koch; Amy J. Scherzer; Steven M. Eshita; et al. PLANT PHYSIOLOGY 1998. doi:10.1104/pp.118.4.1243

Other claims from this paper (5)

Intervention effect Ozone decreased photosynthetic rate in both clones.
Intervention effect Ozone decreased stomatal conductance in both clones.
Association Ozone-induced mRNA levels for four defense-related genes were significantly higher in tolerant than sensitive plants.
Association Wound-induced mRNA levels for these genes were higher in tolerant plants than sensitive plants.
Mechanism The authors suggest ozone tolerance involves salicylic-acid- and jasmonic-acid-mediated signaling.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Submergence decreased extractable soil Zn across five extractants.

Taxon: RiceOryza sativat0
Treatment: Submergencee0
Outcome: Zn contelll in soilse0
Direction: decreasee0
Comparator: initial extractable contentse0

Verbatim

e0
“Submergence caused a decrease in the Zn contelll in soils extracted by different extractants. viz. 1N-NH4OAc. 00.5N HCI, 1N MgCl2, 0.005M DTPA and 0.01M EDTA, the mean magnitude of decrease being 0.4.1.8, 1.0, 1.3 and 1.4 ppm, which constituted 43.5, 74.0, 38.5, 32.0 and 23.0 per cent respectively of the initial extractable contents.”
✓ located verbatim in the source · abstract, characters 0–335

t0
“Rice”
✓ located verbatim in the source · title, characters 61–65

Title

Availability of Zinc in Submerged Soil and Zinc Nutrition of Rice

L. N. Mandal; Debashis Dutta; Biswapati Mandal Journal of the Indian Society of Soil Science 1992

Other claims from this paper (5)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Progeny size differences diminished over time.

Taxon: SCOTS PINEPinus sylvestrist0
Outcome: Size differencese0
Direction: diminishede0
Qualifier: nonrandom size-specific mortalitye0

Verbatim

e0
“Size differences among the progeny types diminished in time due to nonrandom size-specific mortality, causing a decrease in the inbreeding depression estimates for height over time.”
✓ located verbatim in the source · abstract, characters 1361–1542

t0
“SCOTS PINE”
✓ located verbatim in the source · title, characters 49–59

Title

MAGNITUDE AND TIMING OF INBREEDING DEPRESSION IN SCOTS PINE (PINUS SYLVESTRISL.)

Hans Peter Koelewijn; Veikko Koski; Outi Savolainen Evolution 1999. doi:10.1111/j.1558-5646.1999.tb05370.x

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

The root respiration increase was 7.4%.

Taxon: Norway sprucePicea abiest0
Outcome: root respiratione0
Direction: increasee0
Value: 7.4 %e0

Verbatim

e0
“This increase in root respiration was of the same order of magnitude (7.4 %) as the decrease in dry matter production by mycorrhizal plants (10.1 %).”
✓ located verbatim in the source · abstract, characters 1591–1740

t0
“Norway spruce”
✓ located verbatim in the source · title, characters 64–77

Title

Growth and mineral nutrition of non‐mycorrhizal and mycorrhizal Norway spruce (Picea abies) seedlings grown in semi‐hydroponic sand culture

LUDGER ELTROP; HORST MARSCHNER New Phytologist 1996. doi:10.1111/j.1469-8137.1996.tb01915.x

Other claims from this paper (19)

Intervention effect Mycorrhizal infection decreased seedling growth.
Observation Mycorrhizal infection reached 55–71% of root tips.
Observation Fungal biomass accounted for less than 3% of plant dry matter.
Intervention effect Fungal biomass was significantly lower under nitrate than ammonium.
Intervention effect Mycorrhizal plants had higher CO2 assimilation than nonmycorrhizal plants under both N sources.
Intervention effect High light intensity increased CO2 assimilation.
Intervention effect Mycorrhizae significantly increased intact root respiration under ammonium.
Observation The respiratory quotient reached 49.3% at 30°C and low light.
Observation The respiratory quotient fell to 11.7% at 10°C and high light.
Intervention effect Under ammonium, the proportion of carbon lost to root respiration was significantly higher in mycorrhizal plants.
Intervention effect Dry matter production in mycorrhizal plants decreased 10.1%.
Intervention effect Under nitrate, mycorrhizal and nonmycorrhizal plants had no significant respiratory quotient difference.
Observation Fungal mycelium respiration accounted for 31.3% of total mycorrhizal root respiration with ammonium.
Observation Fungal mycelium respiration accounted for 8.3% of total mycorrhizal root respiration with nitrate.
Observation Fungal dry weight was 4% under ammonium.
Observation Fungal dry weight was 2.5% under nitrate.
Observation Calculated fungal respiration was 11.1 times root tissue respiration under ammonium.
Observation Calculated fungal respiration was 3.4 times root tissue respiration under nitrate.
Observation Carbohydrate concentrations did not consistently differ between mycorrhizal and nonmycorrhizal plants; increased root respiration was interpreted as the main cause of reduced growth, with extramatrical fungal biomass minor.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Emergence percentage fell as sowing depth increased, more strongly for smaller seeded grasses.

Taxon: all speciese0
Treatment: increased sowing depthe0
Outcome: emergence percentagee0
Direction: decreasede0
Qualifier: ·greater with smaller seeded grassese0

Not reportedComparator

Verbatim

e0
“For all species, emergence percentage decreased with increased sowing depth but the magnitude of this decrease was ·greater with smaller seeded grasses.”
✓ located verbatim in the source · abstract, characters 908–1060

Title

Effects of sowing depth and additional nitrogen on emergence and establishment of a range of New Zealand pasture grasses

D. R. Porter; R.J. Lucas; M. Andrews 1993

Other claims from this paper (8)

Intervention effect Additional nitrogen did not affect grass emergence or establishment percentages.
Association Grass emergence percentage correlated positively with mean seed weight at all depths.
Intervention effect Survival of emerged plants over winter generally rose with sowing depth.
Association Grass establishment percentage was positively correlated with mean seed weight across depths.
Intervention effect Establishment percentage generally fell as sowing depth increased.
Observation Species and depth effects on emergence at 10 and 30 mm were similar under controlled and field conditions.
Intervention effect Nitrate did not affect emergence at 10 mm depth.
Intervention effect Nitrate decreased emergence percentage by 15% at 30 mm depth.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The smallest rooting volume had lower overall matric potential than the largest volume.

Taxon: tomato plants ( Lycopersicon esculentum Mill. ‘Red Dwarf)Solanum lycopersicume0
Outcome: Ψ mse1
Direction: lowere1
Value: ‐30 kPae1
Qualifier: compared with‐12 kPae1
Comparator: largest RVe1

Verbatim

e0
“tomato plants ( Lycopersicon esculentum Mill. ‘Red Dwarf)”
✓ located verbatim in the source · abstract, characters 109–166

e1
“The root environment in the smallest RV had a 2‐fold decrease in Ψ ms to ‐14 kPa, a greater rate of decrease in Ψ ms and a lower overall Ψ ms magnitude of‐30 kPa (compared with‐12 kPa in the largest RV).”
✓ located verbatim in the source · abstract, characters 321–524

Title

Variations in water availability and temperature in the root environment during root volume restriction studies

M. B. Hurley; J. S. Rowarth; M. C. T. Trought; et al. New Zealand Journal of Crop and Horticultural Science 1998. doi:10.1080/01140671.1998.9514049

Other claims from this paper (7)

Association Media matric potential and temperature varied inversely with rooting volume.
Observation The smallest rooting volume showed a twofold fall in root-zone matric potential to −14 kPa.
Association The smallest volume had a greater rate of matric-potential decrease.
Observation The root environment had large daily temperature fluctuations of 12°C.
Association The smallest volume was 3°C warmer than the largest volume.
Intervention effect Modified hydroponics with frequent watering eliminated matric-potential differences among rooting volumes.
Intervention effect Modified hydroponics with frequent watering reduced media temperature differences among rooting volumes.

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