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“magnitude of decrease”

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1970 ’80 ’90

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Taxon: sunflower ✕

Taxon groups are the verbatim names found in the abstracts (case-insensitive), not normalised: maize, corn and Zea mays are separate groups here. The Organism view merges them through NCBI Taxonomy.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Action potentials appeared to propagate without decrement in velocity or magnitude.

Taxon: sunflowerHelianthus annuust0
Outcome: velocity or magnitudee0
Direction: without decremente0

Verbatim

e0
“The AP appears to propagate without decrement in velocity or magnitude, whereas the VP parameters decrease significantly with distance.”
✓ located verbatim in the source · abstract, characters 566–701

t0
“sunflower”
✓ located verbatim in the source · title, characters 46–55

Title

Action potentials and variation potentials in sunflower: An analysis of their relationships and distinguishing characteristics

Bratislav Stanković; Daniel L. Witters; Tadeusz Zawadzki; et al. Physiologia Plantarum 1998. doi:10.1034/j.1399-3054.1998.1030107.x

Other claims from this paper (12)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A rapid reduction of relative humidity to 60% induced a transient decrease in water potential (Ψ) of approximately 4.5 × 10^5 Pa in sunflower.

Taxon: sunflowerHelianthus annuuse1
Treatment: rapid reduction of relative humidity from 100% to 60 or 40%e7
Outcome: Ψe7
Direction: decreasese7
Value: approximately 4.5e7

Not reportedComparator

Verbatim

e1
“using hydroponic sunflower plants”
✓ located verbatim in the source · abstract, characters 108–141

e7
“Abrupt increases in evaporative demand, obtained by rapid reduction of relative humidity from 100% to 60 or 40%, induced transient decreases in Ψ of approximately 4.5 and 2.5 × 105 Pa, respectively, which were accompanied by simultaneous large increases in stomatal resistance”
✓ located verbatim in the source · abstract, characters 931–1207

Title

The Relative Magnitude of the Partial Resistances to Transpirational Water Movement in Sunflower (Helianthus annuusL.)

C. R. BLACK Journal of Experimental Botany 1979. doi:10.1093/jxb/30.2.245

Other claims from this paper (12)

Intervention effect Cooling the root system to 10 °C or below decreased leaf water potential by up to 7 × 10^5 Pa in hydroponic sunflower.
Intervention effect Leaf water potential completely recovered after root cooling to 10 °C or below once freezing was avoided.
Intervention effect Cooling stem or petiolar segments did not affect leaf water status unless freezing occurred.
Intervention effect Freezing during stem or petiolar cooling caused severe irreversible water stress above the cooled zone.
Intervention effect Leaves below the cooled zone were unaffected by stem or petiolar cooling.
Intervention effect A rapid reduction of relative humidity to 40% induced a transient decrease in water potential (Ψ) of 2.5 × 10^5 Pa in sunflower.
Intervention effect The rapid humidity reduction was accompanied by large simultaneous increases in stomatal resistance in sunflower.
Intervention effect No simultaneous transient effects were observed in the stem xylem during the rapid humidity reduction.
Observation Petiolar resistance was low in sunflower petioles, about 0.04 Pa s cm−4.
Observation Immature and senescent sunflower petioles had petiolar resistance up to 10 times larger than other petioles.
Mechanism The petiolar resistance trend is attributed to the developmental stage and condition of the xylem.
Mechanism The factor causing the transient foliar stress is located within the lamina, not in the stem xylem.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A rapid reduction of relative humidity to 40% induced a transient decrease in water potential (Ψ) of 2.5 × 10^5 Pa in sunflower.

Taxon: sunflowerHelianthus annuuse1
Treatment: rapid reduction of relative humidity from 100% to 60 or 40%e7
Outcome: Ψe7
Direction: decreasese7
Value: 2.5 × 105 Pae7

Not reportedComparator

Verbatim

e1
“using hydroponic sunflower plants”
✓ located verbatim in the source · abstract, characters 108–141

e7
“Abrupt increases in evaporative demand, obtained by rapid reduction of relative humidity from 100% to 60 or 40%, induced transient decreases in Ψ of approximately 4.5 and 2.5 × 105 Pa, respectively, which were accompanied by simultaneous large increases in stomatal resistance”
✓ located verbatim in the source · abstract, characters 931–1207

Title

The Relative Magnitude of the Partial Resistances to Transpirational Water Movement in Sunflower (Helianthus annuusL.)

C. R. BLACK Journal of Experimental Botany 1979. doi:10.1093/jxb/30.2.245

Other claims from this paper (12)

Lexical search (BM25). All words must match; if nothing does, any word. Organism names also match every spelling of the same organism. No semantic search yet.

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