Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

The article states water requirement and drought tolerance are unrelated.

Taxon: grain sorghumSorghum bicolort0
Outcome: drought tolerancee0
Comparator: water requiremente0

Not reportedDirection

Verbatim

e0
“water requirement and drought tolerance are unrelated.”
✓ located verbatim in the source · abstract, characters 1483–1537

t0
“grain sorghum”
✓ located verbatim in the source · title, characters 12–25

Title

Drought and grain sorghum

R.G. Robinson; W. W. Nelson; J. H. Ford; et al. University of Minnesota Digital Conservancy (University of Minnesota) 1976

Other claims from this paper (10)

Observation Sorghum required 304 pounds of water per pound of dry matter.
Observation Corn had a water requirement of 349 in the reported crop comparison.
Observation Proso millet had a water requirement of 267.
Observation Oats had a water requirement of 583.
Observation Wheat had a water requirement of 557.
Observation Soybeans had a water requirement of 646.
Observation Field beans had a water requirement of 700.
Method / resource The Minnesota station developed two grain sorghum hybrids.
Method / resource The Minnesota station released RS 455 regionally in 1976.
Observation Sorghum water requirement was lower than corn water requirement.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Quercus douglasii seedlings had the greatest drought tolerance.

Taxon: Quercus douglasiiQuercus douglasiie0
Organ / stage: seedlingse0
Outcome: drought tolerancee0
Direction: greateste0

Verbatim

e0
“Quercus douglasii seedlings had the greatest drought tolerance”
✓ located verbatim in the source · abstract, characters 660–722

Title

Oak Regeneration in the Upper Carmel Valley, California

James R. Griffin Ecology 1971. doi:10.2307/1936034

Other claims from this paper (12)

Observation Quercus douglasii acorns matured in October.
Observation Q. lobata acorns matured in October.
Observation Nondormant acorns of these two oaks germinated quickly at favorable temperatures.
Observation Quercus agrifolia acorns matured later.
Observation Quercus agrifolia acorns germinated more slowly.
Observation Surface acorns lost viability on a south aspect.
Observation Surface acorns on a north aspect survived autumn heat and germinated in winter but rooted poorly.
Intervention effect Buried acorns germinated well on either aspect.
Mechanism Burial by birds and squirrels insulates acorns from heat, hides them from animals, and ensures rooting.
Observation On south-facing soil with grass, Quercus douglasii seedlings survived their first summer only in wet years.
Observation On north aspects, seedlings of several species survive grass competition over broader climate conditions.
Observation Deer and pocket gophers eliminated seedlings surviving summer drought.

Intervention effectobservedreview summarypositivebasis n/a

Claim · model-written summary

Fertilizers increased ragi drought tolerance.

Taxon: ragiEleusine coracanae0
Treatment: Fertilizerse0
Outcome: ragi tolerance to droughte0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Fertilizers increased ragi tolerance to drought”
✓ located verbatim in the source · abstract, characters 192–239

Title

Studies on fertilizer application for ragi and maize under rainfed conditions in Mysore

Bakul Rao; J. Srinivasamurthy 1972

Other claims from this paper (2)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drought in parent plants increased seed dehydration tolerance.

Taxon: spring wheatTriticum aestivumt0
Treatment: droughte0
Outcome: Seed dehydration tolerancee0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Seed dehydration tolerance was increased when the parent plants were subjected to drought”
✓ located verbatim in the source · abstract, characters 394–483

t0
“spring wheat”
✓ located verbatim in the source · title, characters 25–37

Title

Dehydration tolerance in spring wheat seeds

Barbara Zagdańska; Alicja Pacanowska Biologia Plantarum 1979. doi:10.1007/bf02889491

Other claims from this paper (3)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Four weed species had intermediate drought tolerance.

Taxon: Weedt0
Outcome: intermediate in tolerancee0
Value: Four speciese0

Verbatim

e0
“Four species were intermediate in tolerance”
✓ located verbatim in the source · abstract, characters 583–626

t0
“Weed”
✓ located verbatim in the source · title, characters 0–4

Title

Weed Seed Germination Under Simulated Drought

C. S. Hoveland; G. A. Buchanan Weed Science 1973. doi:10.1017/s0043174500027090

Other claims from this paper (7)

Observation Most weed species germinated better than soybean under simulated drought.
Observation Most weed species did not germinate as well as pearlmillet or sorghum-sudangrass under simulated drought.
Observation Prickly sida was among the most drought tolerant weeds.
Observation Sicklepod was among the most drought tolerant weeds.
Observation Ipomoea lacunosa was among the most drought tolerant weeds.
Observation Four weed species germinated poorly under simulated drought.
Observation Hemp sesbania had the least drought tolerance, similar to soybean.

Method / resourceauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The cotton ABA assay may aid drought tolerance research across genotypes.

Taxon: cottonGossypium hirsutume0
Outcome: useful in drought tolerance researche0
Value: variances in drought tolerancee0

Verbatim

e0
“these assay techniques for ABA, developed specifically for cotton, may be useful in drought tolerance research as a tool for relating these parameters to variances in drought tolerance among genotypes”
✓ located verbatim in the source · abstract, characters 2157–2357

Title

Endogenous Levels of Abscisic Acid in Water‐Stressed Cotton Leaves¹

B. L. McMichael; B. W. Hanny Agronomy Journal 1977. doi:10.2134/agronj1977.00021962006900060019x

Other claims from this paper (7)

Observation ABA levels showed a diurnal pattern in field and greenhouse cotton.
Association Cotton ABA was low early in the morning when water potential was high.
Association ABA increased as water potential fell during the day, peaking near sunset.
Association ABA decreased overnight as water potential rose.
Intervention effect Stressed cotton had higher ABA throughout the day, with larger differences in greenhouse tissue.
Association Field cotton ABA increased alongside stomatal conductance and continued rising after conductance fell.
Association Late afternoon conductance differences may be associated with ABA differences.

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Authors suggest germination-stage tolerance need not indicate adult-plant drought tolerance.

Taxon: Five Pasture Speciest0
Outcome: not necessarily an acceptable index of drought tolerance in mature plantse0

Verbatim

e0
“it is suggested that it is not necessarily an acceptable index of drought tolerance in mature plants.”
✓ located verbatim in the source · abstract, characters 2097–2198

t0
“Simulation of Drought and Its Effect on Germination of Five Pasture Species1”
✓ located verbatim in the source · title, characters 0–76

Title

Simulation of Drought and Its Effect on Germination of Five Pasture Species¹

M. L. Sharma Agronomy Journal 1973. doi:10.2134/agronj1973.00021962006500060041x

Other claims from this paper (8)

Association Across five pasture species, decreasing water potential lowered rate.
Association Across five pasture species, decreasing water potential lowered total germination.
Association The germination reduction differed among species and osmotic media.
Intervention effect At equal potential PEG reduced germination most, then NaCl, then mannitol.
Method / resource Under specified artificial conditions, PEG osmotic potential matched matric potential for all study species.
Method / resource PEG osmotic solutions were satisfactory media for studying drought effects on seed germination.
Observation Germination-stage drought tolerance ranked L. perenne highest and T. repens lowest.
Recommendation Authors caution that germination results under idealized conditions may not predict soil–water germination.

Associationauthor interpretationoriginal resultno effectmeasured

Claim · model-written summary

Authors conclude extreme drought tolerance is not related per se to proline levels.

Taxon: resurrection plantse0
Compound: prolinee0
Outcome: extreme drought tolerancee0

Not reportedDirection

Verbatim

e0
“the extreme drought tolerance of resurrection plants is not related per se to proline levels.”
✓ located verbatim in the source · abstract, characters 446–539

Title

Proline Accumulation during Water Stress in Resurrection Plants

M. J. TYMMS; D. F. GAFF Journal of Experimental Botany 1979. doi:10.1093/jxb/30.1.165

Other claims from this paper (4)

Observation Free proline rose in nine species after intact plants dried.
Observation Free proline remained unchanged or declined in two other tolerant species.
Intervention effect Proline infiltration did not improve cell survival in Borya and Myrothamnus leaves.
Intervention effect Proline infiltration sometimes decreased cell survival.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Chemical mutagenesis productively changed drought tolerance heredity.

Treatment: chemical mutagenesise0
Outcome: drought tolerancee0

Not reportedTaxonDirection

Verbatim

e0
“The use of chemical mutagenesis was a productive way to change the heredity of genotypes in terms of drought tolerance.”
✓ located verbatim in the source · abstract, characters 357–476

Title

IMPROVEMENT OF SPRING DURUM WHEAT SELECTION METHODOLOGIES UNDER CLIMATE CHANGE CONDITIONS

А. I. Grabovets; V. P. Kadushkina; S. А. Kovalenko Vestnik of the Russian agricultural science 1970. doi:10.30850/vrsn/2019/3/33-36

Other claims from this paper (12)

Observation Aerial mass, grain mass per plant and spike, and harvest index were the most objective productivity markers.
Association Yield correlations with structural elements were closest in dry years and decreased in wet years.
Association Yield and aboveground biomass correlated at r = 0.73 on average.
Association Yield and biomass correlation was 0.91 in dry years.
Association Yield and biomass correlation was 0.61 - 0.70 in favorable years.
Association Yield and harvest index correlated at r = 0.81 on average.
Association The yield and harvest index correlation rose to 0.92 in dry years.
Association Yield and grain mass per plant correlated at r = 0.80 in dry years.
Association Yield and grain mass per plant correlated at r = 0.69 in favorable years.
Association Yield and grain mass from the ear correlated at r = 0.84 in dry years.
Association Yield and grain mass from the ear correlated at r = 0.82 in favorable years.
Recommendation Aboveground mass and ear productivity gain selection importance in dry years.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Growth drought tolerance ranged about −20 to −40 bars among seedlings.

Taxon: seedlingse0
Outcome: Growth drought tolerancee0
Direction: variede0
Value: about −20 to −40 barse0

Verbatim

e0
“Growth drought tolerance, defined as the plant drought that is just sufficient to halt the increase of seedling leaf area, varied among seedlings from about −20 to −40 bars”
✓ located verbatim in the source · abstract, characters 1013–1185

Title

Quantification of Growth Drought Tolerance and Avoidance of Blue Grama Seedlings¹

A. M. Wilson; J. A. Sarles Agronomy Journal 1978. doi:10.2134/agronj1978.00021962007000020006x

Other claims from this paper (5)

Association Growth drought avoidance related to diffusion resistance, water uptake and leaf area.
Observation Total leaf diffusion resistance ranged from 6 to 23 sec cm −1.
Observation Maximum water uptake rates ranged from 1 to 8 g day −1.
Recommendation Accession differences in water uptake capacity suggest breeding potential.
Method / resource Growth drought resistance can be quantified for individual seedlings.

“drought tolerance”

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