Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Small changes in cycle length had no characteristic effect on photosynthesis, respiration or stem elongation rates.

Treatment: Small changes in cycle lengthe0
Outcome: rates of photosynthesis, respiration or stem elongatione0
Direction: no characteristic effectse0

Not reportedTaxonComparator

Verbatim

e0
“Small changes in cycle length had no characteristic effects on the rates of photosynthesis, respiration or stem elongation.”
✓ located verbatim in the source · abstract, characters 1134–1257

Title

LENGTH OF THE LIGHT‐DARK CYCLE AND PLANT GROWTH

H. B. Tukey; H. J. Ketellapper American Journal of Botany 1963. doi:10.1002/j.1537-2197.1963.tb07184.x

Other claims from this paper (8)

Intervention effect Growth of tomato, pea, peanut and soybean was maximal near a 24-hour light-dark cycle with equal light and dark periods.
Observation The optimal tomato cycle was 20 hours at 30 C.
Observation The optimal tomato cycle was 27–30 hours at 14 C.
Observation Pea plants did not show the temperature-by-cycle-length interaction and were less sensitive to cycle length.
Intervention effect Seedling raising conditions did not influence the subsequent cycle-length response.
Intervention effect Temperature did not qualitatively alter responses to 18, 24, 36 and 48-hour cycle lengths.
Intervention effect Stem elongation rate increased rapidly when light was turned off.
Observation No overt rhythms were found in tomato plants.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Small cycle length changes had no characteristic effects on photosynthesis, respiration, or stem elongation rates.

Taxon: Plantt0
Outcome: rates of photosynthesis, respiration or stem elongatione0
Direction: no characteristic effectse0

Verbatim

e0
“Small changes in cycle length had no characteristic effects on the rates of photosynthesis, respiration or stem elongation”
✓ located verbatim in the source · abstract, characters 1128–1250

t0
“Plant Growth”
✓ located verbatim in the source · title, characters 35–47

Title

Length of the Light-Dark Cycle and Plant Growth

H. B. Tukey; H. J. Ketellapper American Journal of Botany 1963. doi:10.2307/2439842

Other claims from this paper (9)

Observation Equal light-dark cycles near 24 hr maximized growth of tomato, pea, peanut, and soybean.
Observation Tomato optimum cycle length was 20 hr at 30 C.
Observation Tomato optimum cycle length was 27–30 hr at 14 C.
Observation Peas did not respond to cycle changes of 2–3 hr.
Observation Seedling rearing light regime did not affect cycle length response.
Observation Growth temperature did not qualitatively alter responses to 18, 24, 36, or 48 hr cycles.
Observation Stem elongation rate increased rapidly when light was switched off.
Mechanism Authors inferred an endogenous 24 hr time measuring device.
Observation No overt rhythms were found in tomato plants.

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Stem length changes differed significantly among the collected samples or cultivars.

Taxon: Sauropus androgynus (L.) Merr.Breynia androgynat0
Material: Samples/cultivarse1
Outcome: length changese0
Setting: Mekong Deltae1

Not reportedDirection

Verbatim

t0
“Sauropus androgynus (L.) Merr.”
✓ located verbatim in the source · title, characters 27–57

e0
“only stem height and length changes were statistically significantly different”
✓ located verbatim in the source · abstract, characters 1137–1215

e1
“Samples/cultivars collected from eight provinces in the Mekong Delta”
✓ located verbatim in the source · abstract, characters 1017–1085

Title

Genetic Study of Medicinal Sauropus androgynus (L.) Merr. used in Mekong River, Southern Vietnam

Thieu Van Duong; Do Van Mai; Truong Trong Ngon; et al. Pakistan Journal of Biological Sciences 2022. doi:10.3923/pjbs.2022.401.405

Other claims from this paper (5)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Shading caused changes in giant reed stem height and internode length.

Taxon: Giant ReedArundo donaxt0
Treatment: shadinge0
Outcome: stem height, internode lengthe0

Not reportedComparatorDirection

Verbatim

t0
“Giant Reed”
✓ located verbatim in the source · title, characters 12–22

e0
“shading also caused changes in a number of plant characteristics, such as stem height, internode length, leaf nitrogen, leaf chlorophyll content, specific leaf area, total leaf area per plant, and leaf life span”
✓ located verbatim in the source · abstract, characters 349–560

Title

Response of Giant Reed (Arundo donax) to Intermittent Shading

David F. Spencer Invasive Plant Science and Management 2012. doi:10.1614/ipsm-d-11-00087.1

Other claims from this paper (5)

Observationobservedoriginal resultsimulated

Claim · model-written summary

Major length variations occurred in four-stem branches of monogenomic Triticeae, followed by independent changes in each genus.

Taxon: monogenomic Triticeaee1
Outcome: major length variationse1
Qualifier: followed by independent changes in each genuse1

Verbatim

e1
“Ancestral genome reconstruction suggests that major length variations occurred in four-stem branches of monogenomic Triticeae followed by independent changes in each genus”
✓ located verbatim in the source · abstract, characters 373–544

Title

Variation in Plastome Sizes Accompanied by Evolutionary History in Monogenomic Triticeae (Poaceae: Triticeae)

Ning Chen; Li-Na Sha; Yi-Ling Wang; et al. Frontiers in Plant Science 2021. doi:10.3389/fpls.2021.741063

Other claims from this paper (8)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Mutagenized Triticum sinskajae plants showed changes in spike and stem length compared with control plants.

Taxon: Triticum sinskajaeTriticum monococcum subsp. sinskajaee0
Organ / stage: spike and steme1
Treatment: sodium azidee0
Outcome: length of the spike and steme1
Comparator: control onese1

Not reportedDirection

Verbatim

e0
“Mutagenesis of Triticum sinskajae was performed using sodium azide”
✓ located verbatim in the source · abstract, characters 0–66

e1
“Changes were observed in the length of the spike and stem in the experimental plants as compared with the control ones”
✓ located verbatim in the source · abstract, characters 106–224

Title

Chemically induced mutagenesis of diploid wheat Triticum sinskajae A. Filat. et Kurk.

A. R. Kuluev; E. A. Zaikina; B. R. Kuluev; et al. Abstract book of the 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology" PLAMIC2020 2020. doi:10.28983/plamic2020.140

Other claims from this paper (1)

Method / resource The optimal sodium azide concentration for mutagenesis of Triticum sinskajae was 0.1 mM.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Samantha and Kardinal roses had no change in stem quality or length.

Taxon: rosese0
Outcome: stem quality or stem lengthe0
Direction: no changese0

Not reportedTreatmentComparator

Verbatim

e0
“Stem numbers per harvest were increased in Samantha and Kardinal variety roses, but there were no changes in stem quality or stem length.”
✓ located verbatim in the source · abstract, characters 212–349

Title

EFFECTS OF SURESTEM PLANT GROWTH MODIFIER ON STEM NUMBER, LENGTH, AND QUALITY OF HYBRID TEA ROSES GROWN IN GREENHOUSES

Cyril A. Kust HortScience 1993. doi:10.21273/hortsci.28.5.548b

Other claims from this paper (5)

Intervention effect SURESTEM increased Royalty rose stem number and length and improved quality.
Intervention effect SURESTEM increased stem numbers for Samantha roses.
Intervention effect SURESTEM increased stem numbers for Kardinal roses.
Intervention effect SURESTEM about seven days after 90% harvest increased stems in cycle harvested roses.
Association The best SURESTEM application time depended on greenhouse conditions and harvest practice.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Stem-length change across seed groups reached 179% in Puyallup.

Taxon: Amur maackiat0
Outcome: changes in stem lengthe0
Value: 179%e0
Setting: Puyallup, Wash.e0

Not reportedDirection

Verbatim

e0
“changes in stem length over half-sibling groups varied from <0% in Ithaca, N.Y., to 179% in Puyallup, Wash.”
✓ located verbatim in the source · abstract, characters 1379–1486

e1
“changes in stem length over half-sibling groups varied from <0% in Ithaca, N.Y., to 179% in Puyallup, Wash.”
✓ located verbatim in the source · abstract, characters 1379–1486

t0
“Amur maackia”
✓ located verbatim in the source · title, characters 23–35

Title

Survival and Growth of Amur maackia Seedlings Across North America

Anthony S. Aiello; William R. Graves HortScience 1997. doi:10.21273/hortsci.32.3.508b

Other claims from this paper (7)

Observation Stem-length increase among seed groups ranged from 3% to 75% after two seasons.
Observation Survival did not vary by seed group in the first trial.
Association The effect of seed group on first-year survival varied among trial sites.
Observation Survival across seed-group and location combinations ranged from 0% to 100%.
Association Seed group and trial location each affected growth without interaction.
Observation Arnold Arboretum seed had the greatest across-location stem growth, 83%.
Observation Stem-length change across seed groups was below 0% in Ithaca.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Stem-length change across seed groups was below 0% in Ithaca.

Taxon: Amur maackiat0
Outcome: changes in stem lengthe0
Value: <0%e0
Setting: Ithaca, N.Y.e0

Not reportedDirection

Verbatim

e0
“changes in stem length over half-sibling groups varied from <0% in Ithaca, N.Y., to 179% in Puyallup, Wash.”
✓ located verbatim in the source · abstract, characters 1379–1486

e1
“changes in stem length over half-sibling groups varied from <0% in Ithaca, N.Y., to 179% in Puyallup, Wash.”
✓ located verbatim in the source · abstract, characters 1379–1486

t0
“Amur maackia”
✓ located verbatim in the source · title, characters 23–35

Title

Survival and Growth of Amur maackia Seedlings Across North America

Anthony S. Aiello; William R. Graves HortScience 1997. doi:10.21273/hortsci.32.3.508b

Other claims from this paper (7)

Observation Stem-length increase among seed groups ranged from 3% to 75% after two seasons.
Observation Survival did not vary by seed group in the first trial.
Association The effect of seed group on first-year survival varied among trial sites.
Observation Survival across seed-group and location combinations ranged from 0% to 100%.
Association Seed group and trial location each affected growth without interaction.
Observation Arnold Arboretum seed had the greatest across-location stem growth, 83%.
Observation Stem-length change across seed groups reached 179% in Puyallup.

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

Correcting leaf movements revealed diurnal stem elongation changes in relation to day length and environmental conditions.

Taxon: Chrysanthemum morifoliumChrysanthemum ×morifoliumt0
Outcome: changes in the diurnal stem elongation patterne0
Comparator: non-pruned plantse0

Verbatim

e0
“These movements were subtracted from the values measured on non-pruned plants grown under the same environmental conditions showing changes in the diurnal stem elongation pattern in relation to day length and environmental conditions”
✓ located verbatim in the source · abstract, characters 1689–1922

t0
“Chrysanthemum morifolium”
✓ located verbatim in the source · title, characters 103–127

Title

Non-invasive plant growth measurements for detection of blue-light dose response of stem elongation in Chrysanthemum morifolium

Katrine Heinsvig Kjær Kjær , K H 2012 , Non-invasive plant growth measurements for detection of blue-light dose response of stem elongation in Chrysanthemum morifolium . in Book of abstract 7th international symposium on Light in Horticultural Systems ISHS Lightsym 2012 . pp. 126 , 7th International Symposium on Light in Horticultural systems , Wageningen , Netherlands , 15/10/2012 . 2012

Other claims from this paper (5)

Method / resource Sensor and manual plant height measurements had a strong linear relation.
Association Plant height decreased as blue light increased.
Method / resource The sensor could not distinguish diurnal stem elongation rate fluctuations from leaf movements.
Observation Leaves moved upward during afternoon and night.
Observation Leaves moved downward during early hours of the day.

“changes in stem length”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics