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“decrease of the photosynthesis”

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Calcium deficiency considerably decreased photosynthesis per unit dry weight.

Taxon: Chrysanthemum coronarium var. spatiosumGlebionis coronariat0
Treatment: Calcium deficiencye7
Outcome: photosynthesis per unit dry weighte7
Direction: decreasee7

Not reportedComparator

Verbatim

t0
“Chrysanthemum coronarium var. spatiosum”
✓ located verbatim in the source · title, characters 92–131

e7
“Calcium deficiency seems to give no such effect on photosynthesis per unit leaf area, but brings about a considerable decrease of photosynthesis per unit dry weight”
✓ located verbatim in the source · abstract, characters 776–940

Title

The Effects of Phosphorus and Calcium Deficiency on the Growth and Dry Matter Production in Chrysanthemum coronarium var. spatiosum in Water Culture

Yasuhiko TEZUKA Shokubutsugaku Zasshi 1959. doi:10.15281/jplantres1887.72.101

Other claims from this paper (8)

Intervention effect Phosphorus deficiency increased chlorophyll content in leaves, causing dark greening.
Intervention effect Calcium deficiency caused necrosis of apical buds.
Intervention effect Calcium deficiency retarded the development of each leaf.
Intervention effect Phosphorus deficiency markedly reduced photosynthetic activity per unit leaf area.
Intervention effect Phosphorus deficiency decreased respiratory activity of each organ.
Intervention effect Calcium deficiency had no such effect on photosynthesis per unit leaf area.
Mechanism The decrease in growth caused by phosphorus deficiency is explained by dry matter production.
Observation Phosphate and calcium ion effects on plant growth depend on the whole amount available to the plant rather than on concentration.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inhibiting photosynthesis 16–7 days before heading decreased accumulated carbohydrates.

Taxon: Rice PlantOryza sativat0
Treatment: inhibiting the intensity of the photosynthesis at 16-7 days before headinge0
Outcome: accumulated carbohydratese0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“Rice Plant”
✓ located verbatim in the source · title, characters 132–142

e0
“By inhibiting the intensity of the photosynthesis at 16-7 days before heading, showing the decrease of the accumulated carbohydrates”
✓ located verbatim in the source · abstract, characters 1148–1280

Title

Studies on the Relation between Seasonal Changes of Carbohydrates Accumulated and the Ripening at the Stage of Generative Growth in Rice Plant

Yoshio SOGA; Michio NOZAKI Japanese Journal of Crop Science 1957. doi:10.1626/jcs.26.105

Other claims from this paper (14)

Association Sugars and starch in leaf sheaths and culms were associated with grain production.
Intervention effect Inhibition of photosynthesis decreased starch content faster than sugars.
Intervention effect High nitrogen fertilizer was associated with a sudden carbohydrate decrease about five days before heading.
Intervention effect Early ripening led to lighter thousand-kernel weight.
Observation Early ripening decreased spikelets per ear.
Observation Carbohydrate reaccumulation in culms was maximal among plots with reduced accumulation power.
Intervention effect Shading at 6–15 days after heading caused increased transport of accumulated carbohydrates to the ear.
Observation Shading at 6–15 days after heading increased incompletely developed grains.
Intervention effect Photosynthesis inhibition at 16–25 days after heading delayed grain development.
Observation Photosynthesis inhibition at 16–25 days after heading increased poorly developed grains.
Observation Photosynthesis inhibition at 16–25 days after heading lowered thousand-kernel weight.
Intervention effect Shading 26–35 days after heading did not influence kernel development.
Association Culm carbohydrate accumulation was positively related to photosynthetic power and accumulation to the ear.
Observation Authors estimated carbohydrate accumulation suitable for seed production at about 28–29%.

Mechanismhypothesisoriginal resultnegativemeasured

Claim · model-written summary

Yellowing nearly explained the decrease in net assimilation if yellowed leaf parts do not photosynthesize, although similar carbohydrate fluctuations suggest photosynthesis may be little slowed and respiration may instead increase.

Taxon: sugar‐beetBeta vulgaris subsp. vulgarise2
Interactor: beet yellows virusBeet yellows viruse2pathogen
Outcome: decrease in N.A.R.e0
Qualifier: if yellowed parts of leaves do not photosynthesizee0

Verbatim

e0
“The yellowing almost sufficed to account for the decrease in N.A.R., if yellowed parts of leaves do not photosynthesize.”
✓ located verbatim in the source · abstract, characters 461–581

e1
“However, the similar diurnal fluctuations of carbohydrate in the laminae of healthy and infected leaves suggests that photosynthesis may not be much slowed by infection; if so, the decrease in N.A.R. indicates a large increase in respiration rate, especially of the root.”
✓ located verbatim in the source · abstract, characters 582–853

e2
“Infection with beet yellows virus depressed the dry‐matter yield of sugar‐beet plants”
✓ located verbatim in the source · abstract, characters 0–85

Title

COMPARATIVE PHYSIOLOGICAL STUDIES ON THE GROWTH OF FIELD CROPS

D. J. WATSON; MARION A. WATSON Annals of Applied Biology 1953. doi:10.1111/j.1744-7348.1953.tb02364.x

Other claims from this paper (18)

Intervention effect Beet yellows infection depressed sugar-beet dry-matter yield by decreasing leaf area and net assimilation rate, without reducing leaf number.
Intervention effect End-of-June yellows infection yellowed 30‐50% of leaf area from mid-August; later infection caused less yellowing.
Intervention effect Late-sown infected plants had a greater leaf-area reduction but a smaller net-assimilation reduction than early-sown plants.
Observation Similarly treated plants had the same leaf-area reduction across two years but a much greater net-assimilation decrease in the second year.
Intervention effect Yellows dry-matter losses were mostly in roots, petiole dry weight also decreased, and leaf-lamina dry weight was little affected.
Intervention effect Yellows greatly increased reducing sugars and caused smaller sucrose and starch increases in leaf laminae, beginning with etch symptoms; starch effects peaked then while sugar effects increased with yellowing.
Intervention effect Yellows reduced leaf-lamina water content, nitrogen content and arealweight ratio.
Mechanism The carbohydrate rise could explain the nitrogen-content change but not the other leaf-lamina changes.
Intervention effect Yellows did not affect petiole and root water content but increased their nitrogen content.
Mechanism Yellows reduced root sucrose content, while decreased root weight accounted for most sugar-yield loss.
Intervention effect Beet mosaic infection decreased sugar-beet dry weight only with nitrogenous fertilizer, through reduced leaf area and net assimilation.
Intervention effect Mosaic depressed dry weights of leaf lamina, petiole and root.
Intervention effect Mosaic did not affect leaf-lamina carbohydrate content, water content or arealweight ratio.
Intervention effect Mosaic did not affect petiole and root water content.
Intervention effect Mosaic increased nitrogen content throughout plants receiving no nitrogenous fertilizer, but not in nitrogen-treated plants.
Intervention effect Mosaic slightly increased root sucrose content.
Intervention effect End-of-June mosaic infection caused a 20 yo sugar-yield loss in nitrogen-fertilized plants.
Intervention effect Yellows infection of similar plants at the same date reduced sugar yield by 50%.

Intervention effectauthor interpretationoriginal resultno effectmeasured

Claim · model-written summary

Calcium deficiency had no such effect on photosynthesis per unit leaf area.

Taxon: Chrysanthemum coronarium var. spatiosumGlebionis coronariat0
Treatment: Calcium deficiencye7
Outcome: photosynthesis per unit leaf areae7
Direction: no_changeinferrede7

Not reportedComparator

Verbatim

t0
“Chrysanthemum coronarium var. spatiosum”
✓ located verbatim in the source · title, characters 92–131

e7
“Calcium deficiency seems to give no such effect on photosynthesis per unit leaf area, but brings about a considerable decrease of photosynthesis per unit dry weight”
✓ located verbatim in the source · abstract, characters 776–940

Title

The Effects of Phosphorus and Calcium Deficiency on the Growth and Dry Matter Production in Chrysanthemum coronarium var. spatiosum in Water Culture

Yasuhiko TEZUKA Shokubutsugaku Zasshi 1959. doi:10.15281/jplantres1887.72.101

Other claims from this paper (8)

Intervention effect Phosphorus deficiency increased chlorophyll content in leaves, causing dark greening.
Intervention effect Calcium deficiency caused necrosis of apical buds.
Intervention effect Calcium deficiency retarded the development of each leaf.
Intervention effect Phosphorus deficiency markedly reduced photosynthetic activity per unit leaf area.
Intervention effect Phosphorus deficiency decreased respiratory activity of each organ.
Intervention effect Calcium deficiency considerably decreased photosynthesis per unit dry weight.
Mechanism The decrease in growth caused by phosphorus deficiency is explained by dry matter production.
Observation Phosphate and calcium ion effects on plant growth depend on the whole amount available to the plant rather than on concentration.

Associationobservedcited backgroundmeasured

Claim · model-written summary

In spruce, the rate of photosynthesis per unit number of leaves increased with needle age for five years before declining (cited study).

Taxon: sprucePiceae1
Organ / stage: needlese1
Outcome: rate per unit number of leavese1
Direction: increasede1

Verbatim

e1
“He concluded for spruce that the rate of photosynthesis, when calculated per gram of fresh weight of needles, appeared to decrease with increasing age of the needles only because the weight of the needles increased with age; whereas actually the rate per unit number of leaves increased with increasing age for five years before declining”
✓ located verbatim in the source · abstract, characters 1097–1435

Title

EFFECT OF AGE OF LEAVES UPON THE RATE OF PHOTOSYNTHESIS IN SOME CONIFERS

R. O. Freeland PLANT PHYSIOLOGY 1952. doi:10.1104/pp.27.4.685

Other claims from this paper (2)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Tea carbon assimilation declined after 3 or 4 P.M. as light intensity declined.

Taxon: Tea Plantt0
Treatment: light intensitye0
Outcome: rate of carbon assimilatione1
Direction: decreasede0
Qualifier: after 3 or 4 P.M. with the decrease of light intensitye0

Not reportedSetting

Verbatim

e0
“decreased after 3 or 4 P.M. with the decrease of light intensity.”
✓ located verbatim in the source · abstract, characters 230–295

t0
“Tea Plant”
✓ located verbatim in the source · title, characters 29–38

e1
“The rate of carbon assimilation reached its maximum”
✓ located verbatim in the source · abstract, characters 151–202

Title

Studies on Photosynthesis in Tea Plant (Part 1)

Shigeo HARADA; Terutaka KANOO; Shinsuke SAKAI Japanese Journal of Crop Science 1957. doi:10.1626/jcs.26.49

Other claims from this paper (7)

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

indolebutyric acid reduced Anacharis respiration initially at 30 or 100 p.p.m., followed by recovery by 48 hours.

Taxon: AnacharisElodeat0
Treatment: indolebutyric acide0
Outcome: rate of respiratione0
Direction: decreasee0
Qualifier: partial or complete recovery by the end of 48 hourse0

Not reportedComparator

Verbatim

e0
“In the experiments with both indolebutyric acid and 2,4-D, at either 30 or 100 p.p.m., there was first a decrease in the rate of respiration, followed by partial or complete recovery by the end of 48 hours.”
✓ located verbatim in the source · abstract, characters 783–989

t0
“Anacharis”
✓ located verbatim in the source · title, characters 82–91

Title

Effects of 2,4-D and Other Growth Substances on Photosynthesis and Respiration in Anacharis

R. O. Freeland Botanical Gazette 1950. doi:10.1086/335600

Other claims from this paper (8)

Intervention effect 2,4-dichlorophenoxyacetic acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect gamma-(indole-3)-n-butyric acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect indole-3-acetic acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect beta-naphthoxyacetic acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect Naphthoxyacetic acid at the lower concentration prolonged acceleration of Anacharis respiration.
Intervention effect Naphthoxyacetic acid at 100 p.p.m. first increased then depressed Anacharis respiration.
Intervention effect Indole-acetic acid at both concentrations temporarily accelerated oxygen utilization before retarding it.
Intervention effect 2,4-D reduced Anacharis respiration initially at 30 or 100 p.p.m., followed by recovery by 48 hours.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

2,4-D reduced Anacharis respiration initially at 30 or 100 p.p.m., followed by recovery by 48 hours.

Taxon: AnacharisElodeat0
Treatment: 2,4-De0
Outcome: rate of respiratione0
Direction: decreasee0
Qualifier: partial or complete recovery by the end of 48 hourse0

Not reportedComparator

Verbatim

e0
“In the experiments with both indolebutyric acid and 2,4-D, at either 30 or 100 p.p.m., there was first a decrease in the rate of respiration, followed by partial or complete recovery by the end of 48 hours.”
✓ located verbatim in the source · abstract, characters 783–989

t0
“Anacharis”
✓ located verbatim in the source · title, characters 82–91

Title

Effects of 2,4-D and Other Growth Substances on Photosynthesis and Respiration in Anacharis

R. O. Freeland Botanical Gazette 1950. doi:10.1086/335600

Other claims from this paper (8)

Intervention effect 2,4-dichlorophenoxyacetic acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect gamma-(indole-3)-n-butyric acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect indole-3-acetic acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect beta-naphthoxyacetic acid at 30 and 100 p.p.m. decreased Anacharis photosynthesis, with a stronger effect at 100 p.p.m.
Intervention effect Naphthoxyacetic acid at the lower concentration prolonged acceleration of Anacharis respiration.
Intervention effect Naphthoxyacetic acid at 100 p.p.m. first increased then depressed Anacharis respiration.
Intervention effect Indole-acetic acid at both concentrations temporarily accelerated oxygen utilization before retarding it.
Intervention effect indolebutyric acid reduced Anacharis respiration initially at 30 or 100 p.p.m., followed by recovery by 48 hours.

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“decrease of the photosynthesis”

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